I added all the drivetrains for the JL/JT with typical tire sizes in the description, but it's really confusing. It's better to address all of them on a organized chart like I have on my website: www.exodus4x4.com/jeep-regear.html
General rule as you modify - For each 300LB add-on, (i.e. overland tent, UD60s, frequent towing, rock climbing, etc.) go UP ONE gear ratio. The gear ratios installed on a Jeep are (from smallest to largest): 4.10 / 4.56 / 4.88 / 5.13 / 5.38
I think there's some weirdness on the JKU table: there's three transmission option for the 3.6 and one for 3.8, and then the hemi swaps you lucky bastards get to have there... anyway, I think the "3.6 auto" should read "3.8 auto" and the "3.6 5spd" should be "3.6 auto". Afaik there never was a 5 spd manual for JK/JKU, and I don't think 3.6 auto should say "LOL" for 40" tires. I'd would definitely need new gears for that, but it's doable.
@@Exodus4x4 Hi I have a 2022 Rubicon JLU 6 speed manual and I drive 95% road and maybe 5% off road no extra weight added besides the tires would 4.10 be fine? by the way great content
I regeared my Jeep Gladiator running on 37's to 4.88s. I mainly just off road with it and haul stuff. It is perfect and I have noticed a huge difference. If you don't regear you are missing out on one of the best parts of your Jeep!
Everything is all good with them so far and no issues? Just asking because I keep seeing horror stories about oh 4.88's won't fit, to dealer can't reprogram the gear size because they aren't supported. I have a Tazer mini so could care less and would adjust myself. I had Yukon in my old JK and will probably go that route unless someone knows of something better or equal at a better price point.
@@jasunto My local off-road shop used Yukon gears, they fit perfectly. With the Tazer mini, it was super easy to change the gear ratio on the computer.
@@dad3562 I think that is one of the coolest new options on the manuals. Personally I would go for it, because you have the option to go to 37s in the future. Even if you don't go to 37s, your crawl gear will be so low, you will just float over everything.
Hey Bubba, I just wanted to say thanks. Your guys just did a re-gear on my 2019 JL to 4.56 at the same time had you guys put in the Revolution rear axle shaft and replace my OEM ball joints with a set of Senergy ball points. I trailered my Jeep since I came from 5 hrs. away and stayed a hotel up the road. Dropped off my Jeep at 7am and hung out at my hotel, getting some well needed rest. Your guys were awesome and did a great job. I picked my Jeep up the next morning and headed back home 5 plus hours away. Thank you again for your help re-gearing my Jeep. Hope to see you all again for some Currie axle some day. Take care Don
Great video. Been running 37s for about 1 year with my stock 4.10s and my transmission stays in 7th at 78 MPH with MPGs in the mid 15s. Looking to go to 4.88s next year after I get my wife's new 392 built up. She is still stock except for her tires are 35s. I off-road about 20 to 30 days a year, all on rocks. I hate mud.
I talk with a lot of guys who never broke the gears in or never heard how to. It's pretty boring and it took me almost a month lol. I had a new Eaton E locker installed but he still wanted me to break in the new bearings and let the gears wear together
I'm running 5.38s on 39x13.5r17 KM3s. I do plan on getting a small travel trailer in the future. Offroading it on moderate to hard trails has been a night and day difference since I regeared. It makes climbing and rock krawling easier as far as throttle control with instant power.
I got a Sport on purpose because IMO the 4 to 1 is too low for the diesel. I can get 24.5 mpg if I cruise at 68mph (what ive found to be the “best” highway speed for efficiency) . It actually climbed about 1mpg moving up from 3.73 but it also falls off faster > 75mph. With stock gearing at 75 I could get almost 22mpg but now its more like 20.5 In town /offroad its much more fun to drive hard to tell mpg delta there. It’ll also still readily hit the speed limiter but its really over revving the diesel to do so, not that a gladiator has any business going 110mph.
When I swapped axles on my jeep with ax15 the 3.73's made it awesome. Got 3.90's in the wj 4.0 with nv4500 would go 4.11's with my 315/75/16 around 34" If I was doing it again.
Awe yeah ! Good bye to the 3.07 gears in my '04 TJ. Building it up for 35in tyres to play in the rocks in Arizona. Going with Revolution 5.13 gears, axles shafts and Eaton E-lockers.
I have always use a calculator to make the new tire size equal the RPM it had with the stock tires Jeep sold the vehicle with that is what everything was engineered based on those tires. If the gear size isn't available I go with next higher gear ratio.
Thanks for this vid production. This confirms my goal of re-gearing to 4.56 as my Jeep Wrangler Unlimited Sahara 2019 runs on stock 3.45 gear ratio with BFG KO2 AT in 35s, Black Rhino Arsenal. Have a 160 Lbs. Roof Top Tent and a Barricade Adventure HD front bumper with Smittybilt winch. More power!
I had my JTR re-geared from 4.10's to 5.13's at altitude running 37x20's It restored the power and then some, also restored the MPG's back to stock or slightly better. I've since added a smart cap Evo A which added about 250lbs of weight and plan to add additional options. I purchased the gas 3.6L model. I didn't notice any additional RPM's at highway speeds with 5.13, with 4.10's I did since it would get stuck in a single gear and just rev up it wasn't shifting properly with 37's. I'm super glad I went with 5.13 gearing. I was thinking about supercharging it since it was lacking power, now I don't need to.
@@kirkwoods6810 I checked it today & into a strong wind with a KC light bar as well at 70 MPH it was around cruising around 2200 RPM. I was getting about 16.5 MPG in the summer without the Cap at altitude with 37's and now I'm around 13.3 MPG with the additional weight of the Smart Cap and winter blend fuel, so I think that added weight made a big difference in fuel economy. I have to check it again in the spring / summer months.
Brand new ‘21 JT Overland with 4” lift, 37s. Planning a 4.88 regear using Yukons for off roading (won’t be doing any towing). What’s interesting though, is after getting a speedometer recalibration for 37s, I’m able to get and stick 8th gear on the highway at 70-75 mph. And I’m able to get 7th on normal streets at 50-55 mph. This is with the stock 3.73 gears.
I have a 2018 2.0T Hybrid - JLU Sahara 37s and regeared to 5.13s. I am getting 18/20mpg (city/hwy) and I tow a Jetski :) Not only does regearing help get 8th back it also helps slow down the Jeep when braking! Before I regeared I found it much harder to stop - best upgrade I've done!
@@litoornelas6409 No truss - running stock axles. I am not rock crawling only light trails - been almost two years no issues whatsoever running D30/D35 with 37s and 5.13s
Excellent video! Looking to put a rooftop tent, skid plates and occasionally towing a trailer on 2021 JL with 35 inch tires. What do you recommend for gearing?
I have ARBs in my pro rock 60s. Both ARB and Dynatrac say DO NOT use synthetic oil . Standard 75-90 . Might also be a smart time to do complete bearing replacement and don't forget, 37 inch tires bring a lot of additional stress to your axle shafts. Might be a good time to upgrade to chromoly. Another thing to consider depending on how you use your jeep, or any 4x4 for that matter. May seem expensive in the beginning, but may save you a lot of headache on difficult trails. Talk to a pro like this guy.
Bloody hell guys. This is making an impossible choice even more impossible. When I saw your awesome videos on which Jeep Gladiator to buy I was dead set on buying JT sport S with Max Tow package and regearing. Ok great. Here in florida they are bloody impossible to find. Every single sport in drivable vicinity is 3.73 and just regular sport and those that are max tow cost same as a gladiator rubicon. So I started looking at rubicons of which I have near me in abundance. 4.10 gears. Acoording to website you guys recommend 4.88 for 35s and 5.13 for 37s. Greeeeaaaaat.... On the scale of Mr. Alex Trebec... how badly do you want to regear an expensive rubicon I take "can I get by without doing it for $100?" I took my tacoma to moab for 6 weeks and colorado for 6 weeks and decided that I will never in my life do trails more difficult than elephant hill which is rated 3.5-4/10. I did that in long bed taco sr5 with stock gearing on 33s. Keeping that in mind... thought of shelling out $1,800 to regear 4.10 to 5.13 seems like I would really like to avoid. Lord... why does it have to be so difficult. I wonder if I can just get by with staying with 4.10 on rubicon I am basically about to buy (since I cant find sport s max tow locally) and slap 35s or 37s on there with a lift kit?!
I've got an older '07 JK with the 42RLE auto and have to say the 5.13's I recently put in it are perfect on 35's. RPM's are 2200-2300 cruisin at 70-75 and I can actually go up a hill now 🤣
It’s not harder on the engine running in 6th with a taller rear end vs 8th with a lower rear end if they run the same RPM. What matters is the total reduction not the axle ratio. Getting 7th and 8th back mainly help with having more gear choices available.
Very nice vid on re-gearing! I have a 2023 gladiator rubicon. Gas engine with the 8 speed. I went to 35" tires. Lost a couple gears on the highway and about 4 mpg. Would like to get it back to what it was. In the list it says to go to 4.88 but in your commentary you said to do 4.56. Which would you recommend? Too bad I live so far away or you would have another jeep to work on.
My TJ has the inline six with the three speed auto and 31" tires. It was a rental in Hawaii and has 3.07 differentials which is perfect for highway and fireroads but in 4WD low on steep rough downhills it overspeeds to 15mph so I have to ride the brakes to crawl and have burnt up a coupla sets of brakes. I don't see how upping the diffs will help (4.5+- diffs would only slow it down to 7mph). Maybe an Atlas transfer case with super low 4WD would work but that's a 2-3 thousand dollar solution. Mechanics have told me the Dana 30-35s work best with low ratio pinion gears like a 3.07 because there's more meat on the pinion gear and less torque transmitted to the differential, practically unbreakable. Upping to 4.88 diffs doubles the torque through a smaller pinion gear and is asking for trouble especially with bigger tires. The say upgrading to Dana 44s and stronger axles should be done if you go to 4.88 differentials if you run bigger tires. I'm happy with my 31" tires and 3.07 diffs but am troubled by downhill 4WD speeds and it appears there's no solution except thousand dollar upgrades. Any advice?
Don’t be afraid to re-gear! What they’re saying is true but it doesn’t happen nearly as much as people worry about it. Go ahead and get some power back!
22 Willy’s gladiator. 3 in lift 35x12.5x16 tires. MPG prior 18-20. MPG after 8-11. 6 speed manual 5+6 gear are now useless. 3.73current gears. 4.10 or 4.56 for the manual? With possible 37 in tires in the future
One subject you left out. Gas mileage. I have a FJ cruiser. With 34s and 4.56. after the regear I got back 2.5 miles per gallon. Not much but it's something.
One of the biggest shops in my area told me it was about $4500 for a JL Rubicon because of the locker sensors, that seems way higher than what you say. Sure, this is three years after this video is posted and everything has doubled in price now.
Easy rule of thumb is do the math for tire size versus gear ratio and try and pick a gear ratio that gets you back to the highway RPM that it had from the factory.
I like how your flexing with the three boxes of Hornady ammo on your desk. We get it you are rich! That's like $400 worth of ammo. 😁 Great video my dude
Another great video ... I have a JT Mojave gasser w/ 8spd auto and 4:10s ... are 35,s ok with no gear upgrade? So many different opinions on this lol ...
The biggest question out there, what ratio with this or that. You covered it very well and I agree the breakin is very important. Yukon 4.88 in our JK 2door 37" Yokos and 5.13 in our 4cylinder TJ on 35" Maxxis I do my own work so price point is pocket book friendly for us. Keep those videos coming most always great content.
What do you think about a jl rubicon unlimited with 37s and 4:56? Is my daily driver I’m concerned about mpg and rpms… I do long distance travel to get to the trail (Mexico to south California Anza-borrego) when loaded with rtt, fridge, gear and everything… 35s and 4:10s. I felt it was OK… now with 37s, I just hope it feels at least the same as it used to with the 4:56. I’m thinking about 4:56 based on the math exercise 36.5 (new tire) divided by 32.8 (stock tire) x 4.10 (stock gear) gives me exactly 4:56. Please, I’ll love to hear your opinion
I have a 2021 JLU 3.6 eTorque 8 speed. Dana 30 front Dana 35 rear. I have 35’s and thinking about going to 37’s. Mostly highway driving. Occasionally off road. I tow a 2000lbs boat and possibly a travel trailer in the future. Would you do 4:56 or 4:88??
I have 2020 JLU 6 speed manual. Put 35's on with plenty of aftermarket mods, so kinda heavy. Will be towing as well in Ca so very mountainous terrain. Do you still recommend 4.88 gears and should I consider other mods at the same time for better driving? Thanks. Very informative channel btw.
Hi, I have a 2008 JK 6 spd 3.8 V6 manual with 3.73 gears with 35" tires; two separate shops recommended going with 5.13. It seems that manual transmission jeeps can get away with numerically higher gear setups, especially from what I've read about those with mountainous terrain and towing purposes who will benefit from that gear setup. Do your research well to get the most bang for your buck. In my case, I'm in Fl so basically flat lands but I will eventually go to 37 or higher plus a Hemi swap when the time comes ($$$). I don't do a lot of highway driving, so not too concerned about mileage for now. Best of luck with your build.
If you have the 3.6 Pentastar with 35s, would you keep 4:10 gears with a Hamburger Supercharger installed? I know it would be more expensive but am wondering if it you spend some more money and go with the supercharger, would you gain more HP and torque and avoid the need to re-gear to 4:56?
Really appreciate the knowledge. I have absolutely experienced the hesitation when the discussion of the ratio combined with the 8spd transmission came up. Imagine my surprise that the 392 came with 3.73(recon package was released later with 4.56). Checked the chart on your website and recommended is 4.10. No shops around here want to touch it
@@Exodus4x4 completely understand. Which was why I was surprised that the 4.57 gearing wasn’t offered from jeep (unless you ordered it with the recon package). Even the 4.10 ratio was marked as a nogo due to tuning with the transfer case (conversation with dealer to avoid voiding the ten year warranty package). My previous build was a ‘14 JKU with the GOBI rack, under armor, and steel pieces all around. 4.56 gears with a set of 35’s made a significant difference both on and off the trails. Current plans for the 392 aren’t that aggressive. Again appreciate the insight.
Sorry if you covered this in the comments I combed them but didn't see anyone ask this. Pricing is that full job front and back? 1800 front and 1800 back.
I have a gladiator with 3.73. I put a roof top tent on it and tow a small trailer. I really wanted the max tow package with 410 so I could tow more weight. But wasn’t available when I bought. I won’t lift the truck and won’t change the tire size. Should I go ahead and get the 410? The max tow package also had a better axle and some other things. Just wondering if it is worth it to get 410s if it is different than what I would have gotten from the factory tow package. Thanks.
Great video and excellent information! I see that your chart calls for a 392 Rubicon to be regeared at a ratio of 4.10 for 35" tires. Curious as to why Jeep is using 4.56 gears on the 392 Rubicon Extreme Recon with 35" tires. Reason for the question is that I have a 392 Rubicon and was considering 35" tires. Keep up the great work! Appreciate your vids..
I’m getting a regear on my 2020 JLUR 2.0T. I don’t know if it matters but I have front RCV axle shafts abs getting rear revolution chromoly axle shafts. The regear is being done by Rebel Offroad in laguna beach. They are using spicer parts for front and back. I saw how you talked about a 500 mile break in and not going over 65 mph as well as doing 4 x 15mile trips and stopping for a couple hours to let the bearings cool down. During that time, how often should I put my Jeep in 4 high so I can break in the front gears properly?
is a 4:88 locker over kill on 33x10.5x17R E load? i have a 2015 JKU with the stock 3:21 lsd. i plan on putting a Rubicon Dana 40 front axle in when i do the gear swap.
You only gain torque in each respective gear… but since the trans has more gears you don’t have more torque outside of 1st gear since it will just run a lower transmission ratio. It will only help acceleration on the freeway by closing up the rpm gap between shifts which will have minimal impact on average power output.
If you are going to put a set of axles on a gladiator would the 60 40 from dynatrac be a good choice with 5.13 gears or just bite the bullet and get the 60s want to beaf them up and make them wider at the most cost effective plus it keeps the wheels I have what do you think
Should I do lockers or lsd while I’m in there? I’m lost between what to do. E locker in front with lsd in rear? E locker front and rear? E locker in just rear? Just lsd in rear? Help as I’m not a heavy rock crawler or anything else above a 7/10 off-road. I have a jt sport non max tow. Thanks.
Uh how much weight and what ratio to cover it, also people need to realize how much horsepower THEY bought! Nice video and sounds like I’d bring mine to you if I lived anywhere close
Can you legally do an 8 speed tranny swap into an earlier model JK? Regear would still be part of the mod to run 37s but shifts would be smoother and fuel mileage could improve.
In the details above you say, "Jeep Wrangler JL 3.6 V6 + 6 Spd:" Don't you mean 8spd? I have the 2.0T JLUR and for 35's/37's and getting the mileage and torque you suggested 4.88 for my rig. Love this video!
What about for a JLURD. I am running a TeraFlex.RT3 at the moment, and Mickey Thompson Baja Boss A/T 37/12.5/17. This is a daily driver rig, but I’m looking to get more power. I hear that you don’t need to gear as high with the diesel? What is the highest I can go, and still have a comfortable ride, pretty good, gas, mileage, and definitely benefit on the trail? Thanks.
The transfer case ratio doesn't really matter for 2WD. When you get Offroad and decide to put it in 4L though, it will. With stock engines it really isn't a big deal but in the 392 conversion you have to be careful.
@@Exodus4x4 well for me I have the Rubicon Gladiator and the best size tires for my setup is 35s and have no plan for 37s. So the best ratio I found is 4.56. My trail is sand 80% and rocks 20%
Great video, thanks for the info. I have a 22 Gladiator with the eco-diesel. Running 40s and I'm towing a smaller travel trailer that is around 4100lbs. Do you still suggest 4.88 or do you thing 5.13 would be better. I just finished a 1200ish mile trip (from Utah to Oregon and back) with the trailer and I was rarely able to get out of 6th gear and was only doing around 63 mph any faster it'd drop to 5th.
i hav a 53 cj3b putting a 2.8 v6 60 degree motor with the t90 dana18 mostly 20 mile radiur runs but could go cpl hundred every so often gona run 31 10.50-15 very minimal off roading has 5.38 gears should stay or regear if so to what ty dave
Hi I’m about to re gear my rubicon 2.0LTurbo from 4.10 to 5.13 or 4.88 I put 37” on it and I need your advice.. which is the best and Also if you can recommend a shop where I can do this job I’m in souther California Orange County to be more precise. I found a shop but they said the will do the job in about 1 to 2 hours.. I'm not that confident about the time basically because of the break in.. So please help me out all those Upgreats are expensive and I don't want to waste money...
I have a 22 jeep mojave with 37 inch tires. I use it mostly for mild offroad with occasional rock crawling. It will be loaded down pretty heavy. I was thinking of putting in yukon 488 gears and a front electric ox locker. Is this a good combo and about how much should I expect to pay? Thanks Jake
I am also considering doing a fad on my frontend. With the 4 inch lift I am watching videos where people got a vibration after doing it. Is there a setup that will work with the solid axles?
Would you recommend sticking with the 4.10 on 33s with the manual, or upgrading to the 4.88? And if upgrading to 35s, 4.56 isn't an option with the manual. Would you do 4.10 or 4.88? On the JL*
Just found you on here.. we are in the research stage on getting an Gladiator. We have a jk right now. But you seem to know you 💩👍🏻 where are you located?
So Hey Bubba. We have 2021 JLUr 392. We have 37" BFGs. As you know, it comes with 3.73 gears. It is still pretty peppy. 1500 RPM in 8th gear is 60mph. We wheel hard trails-did Rubicon last year in our 2018 JLUR. We will do the same in the 392. However, We drive in town a lot. So...I am thinking I want to step up on gears but only to 4.10. That will get us a little better MPG in town and a little better torque. I just don't think we need to go higher considering the power of the 392. Thoughts? Thanks!
@@Exodus4x4 Thanks for the response. 4.56 was my first thought. 'Im sure that gearing will keep the hood pointed north for a while when coming off of the line going full throttle. Which I like. You think we will be good on the highway as well? We drive to every location that we wheel. We are pretty far from you (Amarillo), but I would like you to do the swap. We have a kiddo in college in Austin so we could maybe plan ahead and make a trip out of it. The only problem would be getting back for the 500 mile break in period. Thanks again.
I added all the drivetrains for the JL/JT with typical tire sizes in the description, but it's really confusing. It's better to address all of them on a organized chart like I have on my website: www.exodus4x4.com/jeep-regear.html
General rule as you modify - For each 300LB add-on, (i.e. overland tent, UD60s, frequent towing, rock climbing, etc.) go UP ONE gear ratio. The gear ratios installed on a Jeep are (from smallest to largest): 4.10 / 4.56 / 4.88 / 5.13 / 5.38
With all that weight and tire, I’d go 5.13. Most of the time it’ll be under power from the 2.0 so gear it that way.
I think there's some weirdness on the JKU table: there's three transmission option for the 3.6 and one for 3.8, and then the hemi swaps you lucky bastards get to have there... anyway, I think the "3.6 auto" should read "3.8 auto" and the "3.6 5spd" should be "3.6 auto". Afaik there never was a 5 spd manual for JK/JKU, and I don't think 3.6 auto should say "LOL" for 40" tires. I'd would definitely need new gears for that, but it's doable.
@@Exodus4x4 I run 37s in. Rubicon gladiator. Automatic. Stock gears. No plans to ever off-road. Will the 37s eventually damage anything?
@@Exodus4x4 Hi I have a 2022 Rubicon JLU 6 speed manual and I drive 95% road and maybe 5% off road no extra weight added besides the tires would 4.10 be fine? by the way great content
“It blowed up and ran better”…. LOL!!!! 😂🤣
I regeared my Jeep Gladiator running on 37's to 4.88s. I mainly just off road with it and haul stuff. It is perfect and I have noticed a huge difference. If you don't regear you are missing out on one of the best parts of your Jeep!
Everything is all good with them so far and no issues? Just asking because I keep seeing horror stories about oh 4.88's won't fit, to dealer can't reprogram the gear size because they aren't supported. I have a Tazer mini so could care less and would adjust myself. I had Yukon in my old JK and will probably go that route unless someone knows of something better or equal at a better price point.
@@jasunto My local off-road shop used Yukon gears, they fit perfectly. With the Tazer mini, it was super easy to change the gear ratio on the computer.
Do you think a JLR with 35’s and a manual trans would be to much for 4.88’s? I saw it as an option on the Jeep build.
@@dad3562 I think that is one of the coolest new options on the manuals. Personally I would go for it, because you have the option to go to 37s in the future. Even if you don't go to 37s, your crawl gear will be so low, you will just float over everything.
is your gladiator a Gas, Rubicon with auto transmission?
I'm super happy with the 5.13s you guys installed in my 3.6 JT running 37s.
Not that it really matters to me but fuel mileage? RPM"s at 55? And what other additions have you done to the JT? thx
Hey Bubba, I just wanted to say thanks.
Your guys just did a re-gear on my 2019 JL to 4.56 at the same time had you guys put in the Revolution rear axle shaft and replace my OEM ball joints with a set of Senergy ball points. I trailered my Jeep since I came from 5 hrs. away and stayed a hotel up the road. Dropped off my Jeep at 7am and hung out at my hotel, getting some well needed rest. Your guys were awesome and did a great job. I picked my Jeep up the next morning and headed back home 5 plus hours away.
Thank you again for your help re-gearing my Jeep. Hope to see you all again for some Currie axle some day. Take care Don
Just regeared my Gladiator with 5.13 gears ⚙️ FOR 37” tires. Lovin it!!! #JTRSPARTACUS
Great video. Been running 37s for about 1 year with my stock 4.10s and my transmission stays in 7th at 78 MPH with MPGs in the mid 15s. Looking to go to 4.88s next year after I get my wife's new 392 built up. She is still stock except for her tires are 35s. I off-road about 20 to 30 days a year, all on rocks. I hate mud.
I talk with a lot of guys who never broke the gears in or never heard how to. It's pretty boring and it took me almost a month lol. I had a new Eaton E locker installed but he still wanted me to break in the new bearings and let the gears wear together
You didn't talk about gear ratio on the 392 JL, what do you think on 38's.
I'm running 5.38s on 39x13.5r17 KM3s. I do plan on getting a small travel trailer in the future. Offroading it on moderate to hard trails has been a night and day difference since I regeared. It makes climbing and rock krawling easier as far as throttle control with instant power.
I have 4.56 currie semi float axles with my diesel gladiator and the same exact tires and to me, its dead perfect.
@@mattbrew11 What are you getting for fuel mileage with this setup? Thinking of doing something like this over buying a rubicon
I got a Sport on purpose because IMO the 4 to 1 is too low for the diesel. I can get 24.5 mpg if I cruise at 68mph (what ive found to be the “best” highway speed for efficiency) . It actually climbed about 1mpg moving up from 3.73 but it also falls off faster > 75mph. With stock gearing at 75 I could get almost 22mpg but now its more like 20.5
In town /offroad its much more fun to drive hard to tell mpg delta there. It’ll also still readily hit the speed limiter but its really over revving the diesel to do so, not that a gladiator has any business going 110mph.
I'll be bringing you my JT after the first of the year to do this
When I swapped axles on my jeep with ax15 the 3.73's made it awesome. Got 3.90's in the wj 4.0 with nv4500 would go 4.11's with my 315/75/16 around 34" If I was doing it again.
Wow, I have been thinking about calling your shop and talking about regearing my Jlurd...........
What a coincidence 👍
Awe yeah ! Good bye to the 3.07 gears in my '04 TJ. Building it up for 35in tyres to play in the rocks in Arizona. Going with Revolution 5.13 gears, axles shafts and Eaton E-lockers.
Nice , question are you going up to 40 or 42
I have always use a calculator to make the new tire size equal the RPM it had with the stock tires Jeep sold the vehicle with that is what everything was engineered based on those tires. If the gear size isn't available I go with next higher gear ratio.
Thanks for this vid production. This confirms my goal of re-gearing to 4.56 as my
Jeep Wrangler Unlimited Sahara 2019 runs on stock 3.45 gear ratio with BFG KO2 AT in 35s, Black Rhino Arsenal. Have a 160 Lbs. Roof Top Tent and a Barricade Adventure HD front bumper with Smittybilt winch.
More power!
Love your forthright attitude and discussion. Gonna call, thanks!
Love the emphasis on break in..!!
2002 tj on 33"s 4.0 5 speed. I'm thinking 4.88s ?????
I had my JTR re-geared from 4.10's to 5.13's at altitude running 37x20's It restored the power and then some, also restored the MPG's back to stock or slightly better. I've since added a smart cap Evo A which added about 250lbs of weight and plan to add additional options. I purchased the gas 3.6L model. I didn't notice any additional RPM's at highway speeds with 5.13, with 4.10's I did since it would get stuck in a single gear and just rev up it wasn't shifting properly with 37's. I'm super glad I went with 5.13 gearing. I was thinking about supercharging it since it was lacking power, now I don't need to.
Sounds like a great setup. What kind of mpg are you seeing? Also, what RPM are you at when cruising at 70mph?
@@kirkwoods6810 I checked it today & into a strong wind with a KC light bar as well at 70 MPH it was around cruising around 2200 RPM. I was getting about 16.5 MPG in the summer without the Cap at altitude with 37's and now I'm around 13.3 MPG with the additional weight of the Smart Cap and winter blend fuel, so I think that added weight made a big difference in fuel economy. I have to check it again in the spring / summer months.
@@photoapealwow... My mostly stock JT 6 speed with 33s and 4.10 gets about 16mpg if I hold my tongue just right.
@@sarneli_yyc That’s about what I was getting on Stock 33” tires 4.10s around 15.8 mpgs.
Brand new ‘21 JT Overland with 4” lift, 37s. Planning a 4.88 regear using Yukons for off roading (won’t be doing any towing). What’s interesting though, is after getting a speedometer recalibration for 37s, I’m able to get and stick 8th gear on the highway at 70-75 mph. And I’m able to get 7th on normal streets at 50-55 mph. This is with the stock 3.73 gears.
You should be in 8th gear most of the time with that ratio.
I have a 2018 2.0T Hybrid - JLU Sahara 37s and regeared to 5.13s. I am getting 18/20mpg (city/hwy) and I tow a Jetski :) Not only does regearing help get 8th back it also helps slow down the Jeep when braking! Before I regeared I found it much harder to stop - best upgrade I've done!
Did you do anything else to run 37s on stock axles? Truss? Axle shafts?
@@litoornelas6409 No truss - running stock axles. I am not rock crawling only light trails - been almost two years no issues whatsoever running D30/D35 with 37s and 5.13s
Thanks Bubba. My JT is in the shop now getting 4.88
Excellent video! Looking to put a rooftop tent, skid plates and occasionally towing a trailer on 2021 JL with 35 inch tires. What do you recommend for gearing?
great video. excellent information. thx.
Great video Bubba and the chart is super helpful, thanks 🤘🏻
Perfect video & well explained chart ! Getting 4:56 for my 2021 JL Sahara with 35’s on it. I seem to have lost 8th gear
I have ARBs in my pro rock 60s. Both ARB and Dynatrac say DO NOT use synthetic oil . Standard 75-90 .
Might also be a smart time to do complete bearing replacement and don't forget, 37 inch tires bring a lot of additional stress to your axle shafts. Might be a good time to upgrade to chromoly. Another thing to consider depending on how you use your jeep, or any 4x4 for that matter. May seem expensive in the beginning, but may save you a lot of headache on difficult trails. Talk to a pro like this guy.
TONS of solid info !
Thanks !
Wulfy
I re geared the 4.88 on my gladiator and I now have a thrumming noise when I reach 60mph it’s a consistent thrum and little vibration on steering
I already did, and all without watching your video. 😀 amazing
Didn’t talk about us with the JL manual transmission with the pentastar.
Bloody hell guys. This is making an impossible choice even more impossible. When I saw your awesome videos on which Jeep Gladiator to buy I was dead set on buying JT sport S with Max Tow package and regearing. Ok great. Here in florida they are bloody impossible to find. Every single sport in drivable vicinity is 3.73 and just regular sport and those that are max tow cost same as a gladiator rubicon.
So I started looking at rubicons of which I have near me in abundance. 4.10 gears.
Acoording to website you guys recommend 4.88 for 35s and 5.13 for 37s. Greeeeaaaaat.... On the scale of Mr. Alex Trebec... how badly do you want to regear an expensive rubicon I take "can I get by without doing it for $100?"
I took my tacoma to moab for 6 weeks and colorado for 6 weeks and decided that I will never in my life do trails more difficult than elephant hill which is rated 3.5-4/10. I did that in long bed taco sr5 with stock gearing on 33s.
Keeping that in mind... thought of shelling out $1,800 to regear 4.10 to 5.13 seems like I would really like to avoid.
Lord... why does it have to be so difficult. I wonder if I can just get by with staying with 4.10 on rubicon I am basically about to buy (since I cant find sport s max tow locally) and slap 35s or 37s on there with a lift kit?!
If you get a diesel, yes
Great video
So it looks like I need a 4.10 now for the 392. Good to know. Thank you 🍻
Can you run 4.10 with the 392 engine? That is usually stock on the Rubicon
Never watched you before but I love the editing. Ahh yes and also the content 😆
I've got an older '07 JK with the 42RLE auto and have to say the 5.13's I recently put in it are perfect on 35's. RPM's are 2200-2300 cruisin at 70-75 and I can actually go up a hill now 🤣
It’s not harder on the engine running in 6th with a taller rear end vs 8th with a lower rear end if they run the same RPM. What matters is the total reduction not the axle ratio. Getting 7th and 8th back mainly help with having more gear choices available.
Very nice vid on re-gearing! I have a 2023 gladiator rubicon. Gas engine with the 8 speed. I went to 35" tires. Lost a couple gears on the highway and about 4 mpg. Would like to get it back to what it was. In the list it says to go to 4.88 but in your commentary you said to do 4.56. Which would you recommend? Too bad I live so far away or you would have another jeep to work on.
My TJ has the inline six with the three speed auto and 31" tires. It was a rental in Hawaii and has 3.07 differentials which is perfect for highway and fireroads but in 4WD low on steep rough downhills it overspeeds to 15mph so I have to ride the brakes to crawl and have burnt up a coupla sets of brakes. I don't see how upping the diffs will help (4.5+- diffs would only slow it down to 7mph). Maybe an Atlas transfer case with super low 4WD would work but that's a 2-3 thousand dollar solution.
Mechanics have told me the Dana 30-35s work best with low ratio pinion gears like a 3.07 because there's more meat on the pinion gear and less torque transmitted to the differential, practically unbreakable. Upping to 4.88 diffs doubles the torque through a smaller pinion gear and is asking for trouble especially with bigger tires. The say upgrading to Dana 44s and stronger axles should be done if you go to 4.88 differentials if you run bigger tires. I'm happy with my 31" tires and 3.07 diffs but am troubled by downhill 4WD speeds and it appears there's no solution except thousand dollar upgrades. Any advice?
Don’t be afraid to re-gear! What they’re saying is true but it doesn’t happen nearly as much as people worry about it. Go ahead and get some power back!
22 Willy’s gladiator. 3 in lift 35x12.5x16 tires. MPG prior 18-20. MPG after 8-11. 6 speed manual 5+6 gear are now useless. 3.73current gears. 4.10 or 4.56 for the manual? With possible 37 in tires in the future
One subject you left out. Gas mileage. I have a FJ cruiser. With 34s and 4.56. after the regear I got back 2.5 miles per gallon. Not much but it's something.
The issue is most of the time mpg's is dependent on the driver. Not all re-gears net more efficiency.
One of the biggest shops in my area told me it was about $4500 for a JL Rubicon because of the locker sensors, that seems way higher than what you say. Sure, this is three years after this video is posted and everything has doubled in price now.
I've heard $2000/diff so you're in the ballpark
Great info!
Easy rule of thumb is do the math for tire size versus gear ratio and try and pick a gear ratio that gets you back to the highway RPM that it had from the factory.
You sound so nice honest and fair ..what state are located in. 🤓
I like how your flexing with the three boxes of Hornady ammo on your desk. We get it you are rich! That's like $400 worth of ammo. 😁 Great video my dude
LMAO!
I was thinking same thing! He's like hears your re gear money kids hahahaha!
Excellent info 👏👏👏👏👏👏👏
you did not talk about diff cover change to more larger oil capacity
Another great video ... I have a JT Mojave gasser w/ 8spd auto and 4:10s ... are 35,s ok with no gear upgrade? So many different opinions on this lol ...
I'd say you're probably ok but the 4.56 would probably be better
The biggest question out there, what ratio with this or that. You covered it very well and I agree the breakin is very important. Yukon 4.88 in our JK 2door 37" Yokos and 5.13 in our 4cylinder TJ on 35" Maxxis I do my own work so price point is pocket book friendly for us.
Keep those videos coming most always great content.
What do you think about a jl rubicon unlimited with 37s and 4:56? Is my daily driver I’m concerned about mpg and rpms… I do long distance travel to get to the trail (Mexico to south California Anza-borrego) when loaded with rtt, fridge, gear and everything… 35s and 4:10s. I felt it was OK… now with 37s, I just hope it feels at least the same as it used to with the 4:56.
I’m thinking about 4:56 based on the math exercise 36.5 (new tire) divided by 32.8 (stock tire) x 4.10 (stock gear) gives me exactly 4:56. Please, I’ll love to hear your opinion
You’d be ok but honestly think 4.88’s would be much better
super informative video
Can you speak to those getting a JT with a manual transmissions and are planning to go 40's for light offroading, hitting the beach and daily driver.
If you check the chart you'll see we have addressed the manual there. 5.38's for the 40's
I have a 13 jk but it's a 6 speed manual. Would a 4:56 still be your recommendation?
Good info
I have a 2021 JLU 3.6 eTorque 8 speed. Dana 30 front Dana 35 rear. I have 35’s and thinking about going to 37’s. Mostly highway driving. Occasionally off road. I tow a 2000lbs boat and possibly a travel trailer in the future. Would you do 4:56 or 4:88??
I have 2020 JLU 6 speed manual. Put 35's on with plenty of aftermarket mods, so kinda heavy. Will be towing as well in Ca so very mountainous terrain. Do you still recommend 4.88 gears and should I consider other mods at the same time for better driving? Thanks. Very informative channel btw.
Hi, I have a 2008 JK 6 spd 3.8 V6 manual with 3.73 gears with 35" tires; two separate shops recommended going with 5.13. It seems that manual transmission jeeps can get away with numerically higher gear setups, especially from what I've read about those with mountainous terrain and towing purposes who will benefit from that gear setup. Do your research well to get the most bang for your buck. In my case, I'm in Fl so basically flat lands but I will eventually go to 37 or higher plus a Hemi swap when the time comes ($$$). I don't do a lot of highway driving, so not too concerned about mileage for now. Best of luck with your build.
If you have the 3.6 Pentastar with 35s, would you keep 4:10 gears with a Hamburger Supercharger installed? I know it would be more expensive but am wondering if it you spend some more money and go with the supercharger, would you gain more HP and torque and avoid the need to re-gear to 4:56?
Adding gears is never going to be a regret. I think I would go with 4.56 gears.
Really appreciate the knowledge. I have absolutely experienced the hesitation when the discussion of the ratio combined with the 8spd transmission came up.
Imagine my surprise that the 392 came with 3.73(recon package was released later with 4.56). Checked the chart on your website and recommended is 4.10. No shops around here want to touch it
The chart I made isn’t set in stone and can vary greatly depending on your overall build, not just tires.
@@Exodus4x4 completely understand. Which was why I was surprised that the 4.57 gearing wasn’t offered from jeep (unless you ordered it with the recon package). Even the 4.10 ratio was marked as a nogo due to tuning with the transfer case (conversation with dealer to avoid voiding the ten year warranty package).
My previous build was a ‘14 JKU with the GOBI rack, under armor, and steel pieces all around. 4.56 gears with a set of 35’s made a significant difference both on and off the trails. Current plans for the 392 aren’t that aggressive.
Again appreciate the insight.
Sorry if you covered this in the comments I combed them but didn't see anyone ask this. Pricing is that full job front and back? 1800 front and 1800 back.
Total.
I have a gladiator with 3.73. I put a roof top tent on it and tow a small trailer. I really wanted the max tow package with 410 so I could tow more weight. But wasn’t available when I bought. I won’t lift the truck and won’t change the tire size. Should I go ahead and get the 410? The max tow package also had a better axle and some other things. Just wondering if it is worth it to get 410s if it is different than what I would have gotten from the factory tow package. Thanks.
If you added a lot of weight then yes, a gear change is probably necessary. You may even want to go more than 4.10
Great video and excellent information! I see that your chart calls for a 392 Rubicon to be regeared at a ratio of 4.10 for 35" tires. Curious as to why Jeep is using 4.56 gears on the 392 Rubicon Extreme Recon with 35" tires. Reason for the question is that I have a 392 Rubicon and was considering 35" tires. Keep up the great work! Appreciate your vids..
I think the 4.56 or 4.88 are more inline for 37’s. 4.10 or 4.56 for 35’s.
What kind of electric lockers come stock with the rubicons?
I’m getting a regear on my 2020 JLUR 2.0T. I don’t know if it matters but I have front RCV axle shafts abs getting rear revolution chromoly axle shafts. The regear is being done by Rebel Offroad in laguna beach. They are using spicer parts for front and back. I saw how you talked about a 500 mile break in and not going over 65 mph as well as doing 4 x 15mile trips and stopping for a couple hours to let the bearings cool down. During that time, how often should I put my Jeep in 4 high so I can break in the front gears properly?
When you change the pinion gear and gear, you have to change the front and back
Sure would like info on WK2 Grand Cherokees... can a guy use SRT diff's to regear?
No
Will gearing help improve the new gladiator 6-speed manual tall gear ratio transmission. Want to try and add more torque.
Yes it will
is a 4:88 locker over kill on 33x10.5x17R E load? i have a 2015 JKU with the stock 3:21 lsd. i plan on putting a Rubicon Dana 40 front axle in when i do the gear swap.
Extreme terrain has a chart that breaks down gear ratio vs tire size. I'd take a look at that before moving forward.
So... are the three boxes of ammo for sale too? 🤘🏻
LOL, not a chance
You only gain torque in each respective gear… but since the trans has more gears you don’t have more torque outside of 1st gear since it will just run a lower transmission ratio. It will only help acceleration on the freeway by closing up the rpm gap between shifts which will have minimal impact on average power output.
Wanting to know what gear ratio to run on a 2011 3.8 rubicon on 35's... mainly hwy use and a little off roading
4.88's at minimum
Hello, 2018 v6 jeep sport jk 2door, 6speed standard, 37 inch tires , OK what ratio , 5:13??
Great video! Wish I lived closer. Is there a downside to going with 4.88 on a auto JLU on 35s? I don't "think" I'll be doing 37s.
Nah, just more rpms
Did you give gear recommendations for the 392? Sorry if I missed it.
I have that gear ratio chart on my website. www.exodus4x4.com/jeep-regear.html
If you are going to put a set of axles on a gladiator would the 60 40 from dynatrac be a good choice with 5.13 gears or just bite the bullet and get the 60s want to beaf them up and make them wider at the most cost effective plus it keeps the wheels I have what do you think
Bite the bullet and go at least 60/60
Thanks!!!!
What if you’re a poor boy and still drivin a TJ with the 3 speed automatic transmission and gonna go with 35’s and the stock gears are 3:73?
What gears you recommend for 4xe rubicon ?mud bog and trail rides also it needs to be a daily driver for work.I’m thinking 35 or 37 inch tire
What is the stock gear ratio for Jeep Gladiator Altitude? Just bought it and the dealership added 2.5” lift with 35” tires. I doubt they re-geared it.
Should I do lockers or lsd while I’m in there? I’m lost between what to do. E locker in front with lsd in rear? E locker front and rear? E locker in just rear? Just lsd in rear? Help as I’m not a heavy rock crawler or anything else above a 7/10 off-road. I have a jt sport non max tow. Thanks.
A rear e-locker is the ticket!
Uh how much weight and what ratio to cover it, also people need to realize how much horsepower THEY bought! Nice video and sounds like I’d bring mine to you if I lived anywhere close
37s on JT V6 gas 8 automatic, your chart says 4.88 for JL and 5.13 for JT, is it because the JT weighs more than JL, awesome video by the way
Yep, and because you’ll tend to haul more weight than you would a JL.
Can you legally do an 8 speed tranny swap into an earlier model JK? Regear would still be part of the mod to run 37s but shifts would be smoother and fuel mileage could improve.
In the details above you say, "Jeep Wrangler JL 3.6 V6 + 6 Spd:" Don't you mean 8spd? I have the 2.0T JLUR and for 35's/37's and getting the mileage and torque you suggested 4.88 for my rig. Love this video!
6 speed refers to the manual.
What about for a JLURD. I am running a TeraFlex.RT3 at the moment, and Mickey Thompson Baja Boss A/T 37/12.5/17. This is a daily driver rig, but I’m looking to get more power. I hear that you don’t need to gear as high with the diesel? What is the highest I can go, and still have a comfortable ride, pretty good, gas, mileage, and definitely benefit on the trail? Thanks.
Excellent update..
What about when re-gearing is there a difference between Rubicon Vs non Rubicon transfer case?
The transfer case ratio doesn't really matter for 2WD. When you get Offroad and decide to put it in 4L though, it will. With stock engines it really isn't a big deal but in the 392 conversion you have to be careful.
@@Exodus4x4 well for me I have the Rubicon Gladiator and the best size tires for my setup is 35s and have no plan for 37s. So the best ratio I found is 4.56. My trail is sand 80% and rocks 20%
I just picked up a 2020 Gladiator with 37’s. I’m a lifelong Toyota guy and was wondering how to tell if the JL has been ReGeared (rpm @ x speed)?
If you plan on getting lockers, I’m assuming this should be done at the same time as gears?
Yeah absolutely!
Great video, thanks for the info. I have a 22 Gladiator with the eco-diesel. Running 40s and I'm towing a smaller travel trailer that is around 4100lbs. Do you still suggest 4.88 or do you thing 5.13 would be better. I just finished a 1200ish mile trip (from Utah to Oregon and back) with the trailer and I was rarely able to get out of 6th gear and was only doing around 63 mph any faster it'd drop to 5th.
What would you recommend for 35s on a Willys 4xe? I was hoping the 470ft/lbs of torque MIGHT not require regearing but thought I'd ask the pro :)
Great info. Any thoughts on the 392 yet? Once my wheels and 37's arrive, I'd like to stop by the shop to discuss gears and shocks/coilovers.
Any time! I did put the 392 ratios on my website: www.exodus4x4.com/jeep-regear.html
@@Exodus4x4 So much info! Love it and thanks for the link.
Sooo.... what about the 4xe hybrid 2.0 motor? 375hp & 470#'s of torque?
Im about to re gear my 01 tj 4.0 3 speed auto on 35s i never go over 90kph
i hav a 53 cj3b putting a 2.8 v6 60 degree motor with the t90 dana18 mostly 20 mile radiur runs but could go cpl hundred every so often gona run 31 10.50-15 very minimal off roading has 5.38 gears should stay or regear if so to what ty dave
Hi I’m about to re gear my rubicon 2.0LTurbo from 4.10 to 5.13 or 4.88 I put 37” on it and I need your advice.. which is the best and Also if you can recommend a shop where I can do this job I’m in souther California Orange County to be more precise. I found a shop but they said the will do the job in about 1 to 2 hours.. I'm not that confident about the time basically because of the break in.. So please help me out all those Upgreats are expensive and I don't want to waste money...
Hey! Check out Off Road Evolution, they can help you out.
I have a 22 jeep mojave with 37 inch tires. I use it mostly for mild offroad with occasional rock crawling. It will be loaded down pretty heavy. I was thinking of putting in yukon 488 gears and a front electric ox locker. Is this a good combo and about how much should I expect to pay? Thanks Jake
I am also considering doing a fad on my frontend. With the 4 inch lift I am watching videos where people got a vibration after doing it. Is there a setup that will work with the solid axles?
Would you recommend sticking with the 4.10 on 33s with the manual, or upgrading to the 4.88?
And if upgrading to 35s, 4.56 isn't an option with the manual. Would you do 4.10 or 4.88? On the JL*
Just found you on here.. we are in the research stage on getting an Gladiator. We have a jk right now. But you seem to know you 💩👍🏻 where are you located?
New Braunfels TX!
So Hey Bubba. We have 2021 JLUr 392. We have 37" BFGs. As you know, it comes with 3.73 gears. It is still pretty peppy. 1500 RPM in 8th gear is 60mph. We wheel hard trails-did Rubicon last year in our 2018 JLUR. We will do the same in the 392. However, We drive in town a lot. So...I am thinking I want to step up on gears but only to 4.10. That will get us a little better MPG in town and a little better torque. I just don't think we need to go higher considering the power of the 392. Thoughts? Thanks!
I’ve built quite a few 392 JL’s and JT’s before Jeep did. You’ll like it more with a 4.56 ratio, but you do you.
@@Exodus4x4 Thanks for the response. 4.56 was my first thought. 'Im sure that gearing will keep the hood pointed north for a while when coming off of the line going full throttle. Which I like. You think we will be good on the highway as well? We drive to every location that we wheel. We are pretty far from you (Amarillo), but I would like you to do the swap. We have a kiddo in college in Austin so we could maybe plan ahead and make a trip out of it. The only problem would be getting back for the 500 mile break in period. Thanks again.
If available, we could install the REM finish gears and you wouldn’t need to worry about the 500 miles.