Great job guys. If you can just turn up volume of the videos a little bit more up that would be great. Lots of us watch this videos on phones and volume is low by default. My 1250 is running great . I would like to be sure you will manage to resupply us with new pistons and rings in future. I dont have any connection with Hammer Performance but personally i can assure all of the people who are thinking about buying kits from Hammer that Hammer P products are top notch quality. I am overseas and our mechanics and machinists say same thing when they get in touch and test this goods. Carrillo pistons are really good. Personally i run flat tops in Lightning dual plugged heads and i couldnt believe motor response after putting this jugs... it can not compare to 883 performance not even my XL1200S 1998 stock wasnt close to this performances. I think every owner would be very pleased with 1250 and 1275 kits. It makes your 883 imidiatelly competitive to every big twin out there. I can outrun most of classic riders of Japanese sport bikes on a street light. They just can not keep up with torque of a Harley Davidson Sportster in start. Thsn they get confused how a tractor can perform like that. ;-) LIKE IT ALOT. All the best. @tattooglisha
Yeah we're gonna work on the volume situation, getting some kind of microphone setup that will hopefully solve the problem. Should be solved for the next one.
Great Job Aaron and the new videos are great. Just like a visit to the shop which would be a dream come true for many of the Hammer Performance fans. Keep up the good work.
Got a 1250 kit from you guys a while back. My bike is a 1200R and I’m running the stock heads. Got the Hammer cams & the big bore kit, Master Tuner & V&H Blackout 2 into1 & my bike rips 99 HP and 87torque! Love it!! Hammer rocks!!🙌🏻
I love this company ... and I still have a dream: to see the day, when someone comes up with XR style heads to retrofit any sportster and have basically a XR clone ... that day will come, eventually !
That’s the best ending to a video I’ve ever seen, it’s nice to see a humble honest company. Keep it up! I’m sold on the 1275, make a cam video for street use next man!
Thanks! You know the funny thing about that blooper, that was actually our second take. Right in the middle of the first take, a train went by! Our shop is near some railroad tracks and a crossing and of course the train's horn completely drowned us out. So we had to do the whole thing all over again, and then we got to the end, and HAMMER Dan had asked me to say that stuff and I'll be damned if I could remember exactly what I was supposed to say! Oh well, glad everyone enjoys it!
The staff at Hammer Performance are awesome. I was confused about their big bore kits and how the different packages worked so I gave them a call. The gentleman that spoke to me (sorry but I forgot his name) spent a good 1/2 hour explaining how the kits work and the process of getting your heads ported by them. I was considering the 120HP 1250 kit but that was before I saw this video and learned about the 1275 kit. Now I will definitely go with the 1275 kit for my 2013 Sportster 48. Keep up the excellent work boys!
I have the 1250 on my Iron......had the stock heads done with the Sledgehammer port and crush 600 cams.....30% race clutch, roller rockers....bronze gears and a patriot defender 2 in 1 pipe and a figure machine open stack.....The bike gets down!
I was reading on your site a bit about the 1250 and 1275 kits, says that I can retain my stock 883 heads with the kit, but I would like to know if that means when I change out my heads do I need to change pistons out again? I plan to stay with a flat top style piston due to cost on head work
883 heads have very small 49cc chambers, and if you run flat tops under those chambers then your compression ratio will be about 11.8:1. To run flat tops under 883 heads with a pump-gas friendly compression ratio you have to hog out the chambers and make them bigger. But this is a terrible way to do a conversion because you lose the squish band. The best way to do a conversion is to use a reverse dome conversion piston. By putting a dish into the middle of the piston, you bring the compression ratio down to pump gas friendly levels while still maintaining a squish band around the perimeter of the chamber. This is why reverse dome conversion pistons are far and away the most common way to do a conversion. Watch this video for more information: ruclips.net/video/F9d-AJ3R6Js/видео.html So the answer to your question is that you really need a different piston to run a stock 883 head as opposed to a stock 1200 head. Furthermore, when you do head work in conjunction with big cams, you need to change pistons again. That's because regardless of whether you're talking about an 883 head or a 1200 head, the chambers have to be made bigger to make room for bigger valves and high overlap cams and have all the clearances you need. Making the chambers bigger causes the compression ratio to drop unless the pistons are changed to match. Watch this video for more information: ruclips.net/video/flgdYTCfXuU/видео.html Bottom line is that pistons, cams, and heads need to be a matched set. You can't move any of those three very far without bringing the other two along. This makes it really expensive to build a motor incrementally over time because you end up buying some parts twice. Not the answer I want to give, believe me, we get asked about this every day, because guys want to spread out the cost over time. But I can't change the laws of physics. What we recommend is to pick a power level and build toward it, and do it only once even if that means saving your money for awhile. We offer six different packages that are designed to deliver anywhere between 70+ to 120+hp, time tested and proven to deliver their power levels in the most cost effective way possible. Each is a carefully matched combination of parts and services. You can read about them here: www.hammerperf.com/883conversions.shtml#packages
I finally have some money to get my 2003 Sportster converted to a 1200 +. I would like to go as big as I can, within reason, price wise, and not having to mill out the case. I'm guessing that it would be better to use the 2004 & newer cylinders, but I don't know. Is it, and what is the caveat to it that you mentioned? I am trying to do this very soon. Any information that you can give me would be great. Also, I heard someone mention a break in time after putting one of these kits on. What do I need to do? I'm watching your video "Converting A Harley Davidson 883 For Big Power". Do I need to change out anything else, like cams or not? Are the pistons sold as part of the kit or not? I was told that it's not good to bore out the 883 cylinders. Won't the life of them be much less that the kits, as well as perform less? I'll check out the Tech. Tip section of the website, too.
Read this page, it will answer most of your questions: www.hammerperf.com/883conversions.shtml . The break-in procedure is covered in the kit installation instructions, specifically right here: www.hammerperf.com/ttinstallkit.shtml#BreakIn
I’m putting a kit in mine but am undecided on which cam. I don’t want to sacrifice the nice response around town for max horsepower. I don’t want a twitchy sport bike.
Wouldn't be appropriate for us to comment on their products. All we'll say is that we believe we have the best kits money can buy, for all the reasons described in the video.
I live in Australia and im restoring a 2002 883 Sporty, 100% i will be contacting you guys in the near future for my engine combination and which way to got with it but i am keen on a 1275 forsure. Thanks for the video’s Hammer Performance!
Just wondering anyone's thoughts on installing a 1275 kit on an xl1200x motor with 22,000 miles on it. Been through top end kits on dirt bikes a few times.....next thing you know bottom end is blown the hell up! Anyhow, this sporty ain't abused, leaking, burning oil, or ticking. Runs like a dream still! Any thoughts are greatly appreciated from prior Hammer performance customers.
Give a read to these three places on our web site, they show what can be accomplished with cams alone, 1275 kit alone, or cams and 1275 kit in combination: www.hammerperf.com/tthoppingup1200.shtml#camsalone www.hammerperf.com/tthoppingup1200.shtml#1275kitalone www.hammerperf.com/tthoppingup1200.shtml#camsand1275kit
I knew with my 1275 kit and proper tuning not worried about too much at all on the street. It kicks the shit out of everything it comes up against. Harley's don't stand a chance
This is the dream :D My bike is all apart atm so now is a good time if ever. Hope to be able to scrap some change to buy this before put it back together.
I'm in Indiana what shop do you recommend to install the 1275 kit on my 2013 iron 883? and if i take my bike to you guys can you install it for me? and how long would it take if you guys do the work for me?
There's no measurable effect on the longevity by raising the compression to 10:1. As far as the power goes, follow this link to see some dyno sheets using stock 883 heads and cams: www.hammerperf.com/883conversions.shtml#basic
I really like your videos, I’m thinking of one of your kits for my 2006 883 , could I call you guys and go over things with you on what to get and what not to do ?
Yes of course. Our number is (208) 696-1250 and we're open 8:30-4:30 Monday through Friday. Mondays are always really busy and it can be hard to reach us. You can also contact us by filling out this form: www.hammerperf.com/contactus.shtml#salesform . Also, I encourage you to read this page, it's loaded with good information on how to get more out of your bike: www.hammerperf.com/883conversions.shtml
Question, might be dumb I don’t know. I have a 93’ 1200 sporty, do you guys make 1275 kits for that year? I checked the website but I can’t find my specific year 1200, only 883’s. And do I need to upgrade my Harley carb to something bigger once I get the 1275 kit?
To get a 1275 kit for your bike, go here: www.hammerperf.com/xlbigborekits.shtml#1275ordering -Choose small fin cylinders -Choose the cylinder color of your choice -Choose either flat top pistons for about 9.5:1 compression ratio (stock cams) or radius dome pistons 10.5:1 compression ratio (cams with intake close timing more than 46 degrees) Also go here: www.hammerperf.com/xlbigborekits.shtml#1275options -The ring gapping service, top end gasket set, and ignition are highly recommended -The jets and spark plugs are required Your stock carb will work fine up to about 90-95hp. You only need to change it out if you're shooting for a number bigger than that.
Really enjoy the transparency here, especially in the failed trials to find a confident production model. Hopefully planning to work with you guys soon on two sportsters I just picked up. Your reputation holds its own and it is content like this that reassures. Awesome stuff.
Am I able to get a set of rings if I already have a 1250 or 1275 kit? I’m going to order one for my Buell but I’m concerned that if I need a set of rings down the road I’ll have to buy a whole new kit
@@HAMMERPERFORMANCE good deal that’s the only thing preventing me from ordering. How would I go about getting the rings, just call or email? I need a set for a 1275 kit Iv already installed in a Sportster drag bike but I’m also going to put a 1250 in my Buell.
No case boring required, these are bolt-on kits that can be installed in an afternoon without even pulling the engine out of the frame. 1200 models do not require a clutch upgrade. Likewise, 1986-2003 883's don't require it. However, all 2004+ 883's do require a clutch upgrade. That's because 883's have been coming with a weak clutch spring since 2004, and the clutch will slip after doing a conversion unless the spring is upgraded to match. A spring is only a $30 item. Most guys however will opt for a full extra plate clutch upgrade, while they're in there. The extra plate clutch kit eliminates the factory spring plate (aka "grenade plate") in the stock clutch that's so failure prone. All years and models however require at least some extra pieces, beyond the engine kit alone, for a successful conversion. For a complete list of everything required for a successful 1250 or 1275 conversion, go here: www.hammerperf.com/xlbigborekits.shtml#1275options . The items can also be purchased there.
Have had my Iron 883 for a bit over a year. Love it, but it would be awesome to get a 1274 kit. Is the tuner included with the kit the best fit for it or can another brand be as effective as well?
The Dynojet Powervision is, in our opinion, far and away the best EFI tuner product available for HD applications, nothing else really even comes close. The little display unit makes it much more powerful and easier to use than competing products, and gives it a rich feature set, everything from highly configurable gauges to a simple-to-use autotune function to the ability to read and clear codes to on-the-fly changes, multiple stored tunes at the ready, the list goes on and on. It just blows away everything else on the market. Therefore we chose it to be the primary tuner that we recommend, offer, and support directly with a tune. Other flash-type tuners can be used, but your life will be a whole lot easier if you get a Powervision. Read here for more information: www.hammerperf.com/883conversions.shtml#faq6
@@HAMMERPERFORMANCE thank you so much for your reply. Sounds great! In that case, I'll start saving up for the whole kit as well as a full exhaust and a high flow air filter. I'm a new subscriber, so I'll be checking out your other videos. Thanks for the info.
All 2007+ Sportsters, 883's and 1200's both, have come from the factory with "W" cams. So if the 883 you're talking about is 2007+, then yes, it came with the same cams as a 2017. On the other hand, if it's a 91-06 model year 883, then it came with "D" cams, which are a whole different animal. You can find a dyno sheet that compares Andrews N2's, W cams, and D cams, with no other changes, on a 883-1250 conversion at this link: www.hammerperf.com/883conversions.shtml#faq1
You say other builders only linished the high light barrels and you only mechine yours well the one i bought a couple year of hammer are linished not cnc
We started machining the fins for the black highlighted cylinders in June of 2015. Kits sold prior to that, yes, they had the sanded finish. We are more than happy to machine yours for no charge, just send them back to us.
We ship world wide. If you like, you can go through our contact us page and submit a request and we can figure out shipping costs for you pending on what you are looking to order.
Obviously there’s no galling issues with the steel liners? From what I understand, ductile iron is usually used because of its high resistance to galling with the rings
There was a bit of a learning curve, but we sorted it out long ago. We've sold several thousand 1275 kits with steel liners since coming out with them in 2017, into all corners of the globe, and they've been enormously successful. S&S and HD both produce steel lined cylinders for Twin Cams, so this technology is not unique to us.
Rather than retype the explanation, click here: www.hammerperf.com/ttinstallkit.shtml#faq13 . It takes you to the specific paragraph in the kit installation instructions that covers it.
Yes, but custom cylinders are required. Really the only reason to go for an odd size is the need to meet displacement limits in a particular racing class.
@@HAMMERPERFORMANCE and of course custom (3.700) pistons and boring the cases... but I never do anything easy. Just seems to me that 88 / 90 inches on that bottom and transmission is pushing the limits. And I don't particularly care for the iron cylinders. Can we get a 4.10 o.d. (or more) liner in the aluminum jugs ?
@@johngilbert6810 I'm sorry, we have nothing available and I'm not aware of anything in the aftermarket to support that. You're talking about an extremely small market and I really doubt anyone has invested in the development of the cylinders. Everyone does 88 or 90ci. The bottom end, primary, and transmission can handle it no problem.
@HAMMER PERFORMANCE I received my kit maybe I'm over looking it . But where might I find the assembly lube I didn't see it ? I'll just run and grab some . Does it really matter what kind ?
@@jesslittle7110 Please contact us using this form: www.hammerperf.com/contactus.shtml#salesform . RUclips is not a good venue for doing customer service. Thanks.
There is no need to change your heads when converting to 1275. In fact, the vast majority of 883-1275 conversions are done without changing the heads. See this package for example, it includes everything you need for a successful conversion and it works fine your stock 883 heads: www.hammerperf.com/883conversions.shtml#basic . The higher power packages described immediately after that one also use your 883 heads, but those packages require you to send your heads to us for work. That's still a lot cheaper than replacing the heads, though, on a horsepower per dollar basis.
@@malkiyahyasharel1964 You can see the pricing on the complete conversion package and even order it at this link: www.hammerperf.com/883conversions.shtml#basic . That package has everything you need for a successful conversion. You can download the sample quote there for a complete list of what it comes with. As far as installation goes, more than 90% of our customers install it themselves. We've built our business around do-it-yourselfers and we have good instructions and videos to show how it's done. If you want to farm it out, you can probably expect about 7-8 hours of labor due to the fact that your bike also gets a clutch upgrade (included in the package).
The spigots are stock 3.675 o.d., no case boring required. The 1250 and 1275 are bolt-ons that can be installed in an afternoon without even pulling the motor out of the frame. 4 inch o.d. spigots are used on 88ci (3.813 bore) and 90ci (3.875 bore) kits. Those kits require a full tear down for case boring.
Most customers report an improvement in fuel mileage after the conversion. It makes sense, too, because the motor is more efficient largely due to the increase in compression that typically comes with a conversion. But it's a difficult thing to quantify because there are so many variables, so it's not a claim we make.
Yes, we have many customers who've successfully installed the 1275 kit onto their XR1200. It uses a little different head gasket from a standard 1200, but it's otherwise the same kit. We provide the correct gaskets with the kit. Also be aware that we do not offer the gray color cylinders like the stock XR1200 models came with. Most XR1200 owners go with straight black instead. If your bike is an XR1200X then we do offer the black highlighted cylinders to match. You must also use a capable flash tuner. We recommend and offer the Dynojet Powervision and support it directly with a tune, so your life is a lot easier if you go with a Powervision. And finally you must also run the spark plugs we specify, which are actually the 10R12X Gold plugs that were stock in XR1200 and certain Buell models, part number 27794-08.
i also think even though i live in denmark, you should try and get some off your kit´s tüv approved maybe reach out to eightball customs they do sell alot off sportster parts regards Sören
Great job guys. If you can just turn up volume of the videos a little bit more up that would be great. Lots of us watch this videos on phones and volume is low by default. My 1250 is running great . I would like to be sure you will manage to resupply us with new pistons and rings in future. I dont have any connection with Hammer Performance but personally i can assure all of the people who are thinking about buying kits from Hammer that Hammer P products are top notch quality. I am overseas and our mechanics and machinists say same thing when they get in touch and test this goods. Carrillo pistons are really good. Personally i run flat tops in Lightning dual plugged heads and i couldnt believe motor response after putting this jugs... it can not compare to 883 performance not even my XL1200S 1998 stock wasnt close to this performances. I think every owner would be very pleased with 1250 and 1275 kits. It makes your 883 imidiatelly competitive to every big twin out there. I can outrun most of classic riders of Japanese sport bikes on a street light. They just can not keep up with torque of a Harley Davidson Sportster in start. Thsn they get confused how a tractor can perform like that. ;-) LIKE IT ALOT. All the best. @tattooglisha
Yeah we're gonna work on the volume situation, getting some kind of microphone setup that will hopefully solve the problem. Should be solved for the next one.
Great Job Aaron and the new videos are great. Just like a visit to the shop which would be a dream come true for many of the Hammer Performance fans. Keep up the good work.
Got a 1250 kit from you guys a while back. My bike is a 1200R and I’m running the stock heads. Got the Hammer cams & the big bore kit, Master Tuner & V&H Blackout 2 into1 & my bike rips 99 HP and 87torque! Love it!! Hammer rocks!!🙌🏻
Congrats on your successful project!
Wow that’s impressive. Thinking about doing my 2000 XL1200C to a 1250. Sounds like your very happy with them...
I cannot WAIT till next winter when I have the 1275 120+hp kit installed on my 883 which already has a 1250 on it...
Thank you so much for showing us the failure,that alone made me a customer
These guys are awesome. Can't wait to get the 1275's.
I love this company ... and I still have a dream: to see the day, when someone comes up with XR style heads to retrofit any sportster and have basically a XR clone ... that day will come, eventually !
That’s the best ending to a video I’ve ever seen, it’s nice to see a humble honest company. Keep it up! I’m sold on the 1275, make a cam video for street use next man!
The 1275 kit with a 560 cam sounds awesome. Only put 3,000 miles on mine so far, but it's been great.
Thanks! You know the funny thing about that blooper, that was actually our second take. Right in the middle of the first take, a train went by! Our shop is near some railroad tracks and a crossing and of course the train's horn completely drowned us out. So we had to do the whole thing all over again, and then we got to the end, and HAMMER Dan had asked me to say that stuff and I'll be damned if I could remember exactly what I was supposed to say! Oh well, glad everyone enjoys it!
I can't wait for more videos. And too purchase my kit. Keep up the good work guys.
Your subs are starting to go up now that videos are flowing. Hell yeah!
The staff at Hammer Performance are awesome. I was confused about their big bore kits and how the different packages worked so I gave them a call. The gentleman that spoke to me (sorry but I forgot his name) spent a good 1/2 hour explaining how the kits work and the process of getting your heads ported by them. I was considering the 120HP 1250 kit but that was before I saw this video and learned about the 1275 kit. Now I will definitely go with the 1275 kit for my 2013 Sportster 48. Keep up the excellent work boys!
I have the 1250 on my Iron......had the stock heads done with the Sledgehammer port and crush 600 cams.....30% race clutch, roller rockers....bronze gears and a patriot defender 2 in 1 pipe and a figure machine open stack.....The bike gets down!
Good work guys!!
Thanks Larry!
I'd sure like for my 2002 883R Sportster to be a test bike;) great video, thanks. Subscribed.
Sorry if I’m a bit fresh. But would the 1275 kit work on 883. Can I get 883 converted, or is it for the 1200?
Go here for a complete package to convert your 883 to 1275: www.hammerperf.com/883conversions.shtml#basic
...
Do you sell the alloy skirts for the 1275 kit seperately, and can they be made out to 1250 instead?
I like you guys! We're gonna be doing some business.
Hi Dave
Thanks for the prop's!
We look forward to doing business with you.
Is the 1275 a basic fit for my 05 Xb12s Buell? Thanks, Cheers!
Can I install an 883 onto my 1984 iron head 1000 frame
I can't seem to figure out how to use the Hammer website... I need that 1275!
just shoot us an email at sales@hammerperf.com and we can do up a quote for you pending on what your looking for.
I was reading on your site a bit about the 1250 and 1275 kits, says that I can retain my stock 883 heads with the kit, but I would like to know if that means when I change out my heads do I need to change pistons out again? I plan to stay with a flat top style piston due to cost on head work
883 heads have very small 49cc chambers, and if you run flat tops under those chambers then your compression ratio will be about 11.8:1. To run flat tops under 883 heads with a pump-gas friendly compression ratio you have to hog out the chambers and make them bigger. But this is a terrible way to do a conversion because you lose the squish band. The best way to do a conversion is to use a reverse dome conversion piston. By putting a dish into the middle of the piston, you bring the compression ratio down to pump gas friendly levels while still maintaining a squish band around the perimeter of the chamber. This is why reverse dome conversion pistons are far and away the most common way to do a conversion. Watch this video for more information: ruclips.net/video/F9d-AJ3R6Js/видео.html
So the answer to your question is that you really need a different piston to run a stock 883 head as opposed to a stock 1200 head.
Furthermore, when you do head work in conjunction with big cams, you need to change pistons again. That's because regardless of whether you're talking about an 883 head or a 1200 head, the chambers have to be made bigger to make room for bigger valves and high overlap cams and have all the clearances you need. Making the chambers bigger causes the compression ratio to drop unless the pistons are changed to match. Watch this video for more information: ruclips.net/video/flgdYTCfXuU/видео.html
Bottom line is that pistons, cams, and heads need to be a matched set. You can't move any of those three very far without bringing the other two along. This makes it really expensive to build a motor incrementally over time because you end up buying some parts twice. Not the answer I want to give, believe me, we get asked about this every day, because guys want to spread out the cost over time. But I can't change the laws of physics.
What we recommend is to pick a power level and build toward it, and do it only once even if that means saving your money for awhile. We offer six different packages that are designed to deliver anywhere between 70+ to 120+hp, time tested and proven to deliver their power levels in the most cost effective way possible. Each is a carefully matched combination of parts and services. You can read about them here: www.hammerperf.com/883conversions.shtml#packages
I finally have some money to get my 2003 Sportster converted to a 1200 +. I would like to go as big as I can, within reason, price wise, and not having to mill out the case. I'm guessing that it would be better to use the 2004 & newer cylinders, but I don't know. Is it, and what is the caveat to it that you mentioned? I am trying to do this very soon. Any information that you can give me would be great. Also, I heard someone mention a break in time after putting one of these kits on. What do I need to do?
I'm watching your video "Converting A Harley Davidson 883 For Big Power". Do I need to change out anything else, like cams or not? Are the pistons sold as part of the kit or not?
I was told that it's not good to bore out the 883 cylinders. Won't the life of them be much less that the kits, as well as perform less? I'll check out the Tech. Tip section of the website, too.
Read this page, it will answer most of your questions: www.hammerperf.com/883conversions.shtml . The break-in procedure is covered in the kit installation instructions, specifically right here: www.hammerperf.com/ttinstallkit.shtml#BreakIn
I’m putting a kit in mine but am undecided on which cam. I don’t want to sacrifice the nice response around town for max horsepower. I don’t want a twitchy sport bike.
I’m looking for a big bore kit for my 06 Harley night train 88cc what do you recamend?
Big Slim give us a call, we can put a build together around what your looking for.
208-696-1250
What is your opinion on the S&S kits for sporty's?
Wouldn't be appropriate for us to comment on their products. All we'll say is that we believe we have the best kits money can buy, for all the reasons described in the video.
a god in his own rights.
I was the 1000th like!
I live in Australia and im restoring a 2002 883 Sporty, 100% i will be contacting you guys in the near future for my engine combination and which way to got with it but i am keen on a 1275 forsure. Thanks for the video’s Hammer Performance!
Just wondering anyone's thoughts on installing a 1275 kit on an xl1200x motor with 22,000 miles on it. Been through top end kits on dirt bikes a few times.....next thing you know bottom end is blown the hell up! Anyhow, this sporty ain't abused, leaking, burning oil, or ticking. Runs like a dream still! Any thoughts are greatly appreciated from prior Hammer performance customers.
Honest, informative, modest review.
If I use a stock 1200 and boost it up to a 1275 do all the cams have to be changed??
Give a read to these three places on our web site, they show what can be accomplished with cams alone, 1275 kit alone, or cams and 1275 kit in combination:
www.hammerperf.com/tthoppingup1200.shtml#camsalone
www.hammerperf.com/tthoppingup1200.shtml#1275kitalone
www.hammerperf.com/tthoppingup1200.shtml#camsand1275kit
I knew with my 1275 kit and proper tuning not worried about too much at all on the street. It kicks the shit out of everything it comes up against. Harley's don't stand a chance
great explanation, thanks!
This is the dream :D
My bike is all apart atm so now is a good time if ever.
Hope to be able to scrap some change to buy this before put it back together.
How have I not heard of Hammer. You guys are so squared away and thorough and customer service is so great. Speed Thrills!
On your website it mentions 92 octane gas with your kits, but in my town 91 is the only availible fuel, will this make a difference?
Excellent video. Thanks for the plain talking & common sense communication without the hype.
Willm
I'm in Indiana what shop do you recommend to install the 1275 kit on my 2013 iron 883? and if i take my bike to you guys can you install it for me? and how long would it take if you guys do the work for me?
There's an old saying out here in the country, chop your own wood and it will warm you twice.
And post rubber mounts,,,woy oi ,YES🤘
Do you have a comparison with 90 ci kit? Very interesting on it for my BUELL XB12XT. Thanks.
Yes, please contact us using this form and I'll get you fixed up: www.hammerperf.com/contactus.shtml#salesform
@@HAMMERPERFORMANCEerror : wrong field count. Suspected spam
@@openidqd I just tested it and it worked fine. And I receive 50+ emails a day via that form. Try a different browser.
@@HAMMERPERFORMANCE got it. Browser cookies and captcha.... Browser private mode helps in my case.
Great ssssth nice deal
Wonder if u could bore a 1275 cylinder !?
What does this do to longevity going from 9.3 to 10.1 compression? What’s the power like with stock 883 cams and heads?
There's no measurable effect on the longevity by raising the compression to 10:1. As far as the power goes, follow this link to see some dyno sheets using stock 883 heads and cams: www.hammerperf.com/883conversions.shtml#basic
I really like your videos, I’m thinking of one of your kits for my 2006 883 , could I call you guys and go over things with you on what to get and what not to do ?
Yes of course. Our number is (208) 696-1250 and we're open 8:30-4:30 Monday through Friday. Mondays are always really busy and it can be hard to reach us. You can also contact us by filling out this form: www.hammerperf.com/contactus.shtml#salesform . Also, I encourage you to read this page, it's loaded with good information on how to get more out of your bike: www.hammerperf.com/883conversions.shtml
Thank you your channel is very educational
Question, might be dumb I don’t know. I have a 93’ 1200 sporty, do you guys make 1275 kits for that year? I checked the website but I can’t find my specific year 1200, only 883’s. And do I need to upgrade my Harley carb to something bigger once I get the 1275 kit?
To get a 1275 kit for your bike, go here: www.hammerperf.com/xlbigborekits.shtml#1275ordering
-Choose small fin cylinders
-Choose the cylinder color of your choice
-Choose either flat top pistons for about 9.5:1 compression ratio (stock cams) or radius dome pistons 10.5:1 compression ratio (cams with intake close timing more than 46 degrees)
Also go here: www.hammerperf.com/xlbigborekits.shtml#1275options
-The ring gapping service, top end gasket set, and ignition are highly recommended
-The jets and spark plugs are required
Your stock carb will work fine up to about 90-95hp. You only need to change it out if you're shooting for a number bigger than that.
HAMMER PERFORMANCE thank you very much!
Really enjoy the transparency here, especially in the failed trials to find a confident production model.
Hopefully planning to work with you guys soon on two sportsters I just picked up. Your reputation holds its own and it is content like this that reassures. Awesome stuff.
would an HD-XR1200 be a good candidate for one of your bolt- on kits ?
yes
Would be better if I could hear it
were workin on it, haven't quite stepped up to the professional video making stage yet. :-)
Am I able to get a set of rings if I already have a 1250 or 1275 kit? I’m going to order one for my Buell but I’m concerned that if I need a set of rings down the road I’ll have to buy a whole new kit
We sell the rings if you need them.
@@HAMMERPERFORMANCE good deal that’s the only thing preventing me from ordering. How would I go about getting the rings, just call or email? I need a set for a 1275 kit Iv already installed in a Sportster drag bike but I’m also going to put a 1250 in my Buell.
So do you have to bore the cases with the 1250 or 1275 big bore kits? Also do u have to upgrade the clutch and primary with these kits?
No case boring required, these are bolt-on kits that can be installed in an afternoon without even pulling the engine out of the frame.
1200 models do not require a clutch upgrade. Likewise, 1986-2003 883's don't require it. However, all 2004+ 883's do require a clutch upgrade. That's because 883's have been coming with a weak clutch spring since 2004, and the clutch will slip after doing a conversion unless the spring is upgraded to match. A spring is only a $30 item. Most guys however will opt for a full extra plate clutch upgrade, while they're in there. The extra plate clutch kit eliminates the factory spring plate (aka "grenade plate") in the stock clutch that's so failure prone.
All years and models however require at least some extra pieces, beyond the engine kit alone, for a successful conversion. For a complete list of everything required for a successful 1250 or 1275 conversion, go here: www.hammerperf.com/xlbigborekits.shtml#1275options . The items can also be purchased there.
@@HAMMERPERFORMANCE awesome thanks for the info looking forward to ripping up the pavement
Have had my Iron 883 for a bit over a year. Love it, but it would be awesome to get a 1274 kit. Is the tuner included with the kit the best fit for it or can another brand be as effective as well?
The Dynojet Powervision is, in our opinion, far and away the best EFI tuner product available for HD applications, nothing else really even comes close. The little display unit makes it much more powerful and easier to use than competing products, and gives it a rich feature set, everything from highly configurable gauges to a simple-to-use autotune function to the ability to read and clear codes to on-the-fly changes, multiple stored tunes at the ready, the list goes on and on. It just blows away everything else on the market. Therefore we chose it to be the primary tuner that we recommend, offer, and support directly with a tune. Other flash-type tuners can be used, but your life will be a whole lot easier if you get a Powervision. Read here for more information: www.hammerperf.com/883conversions.shtml#faq6
@@HAMMERPERFORMANCE thank you so much for your reply. Sounds great! In that case, I'll start saving up for the whole kit as well as a full exhaust and a high flow air filter. I'm a new subscriber, so I'll be checking out your other videos. Thanks for the info.
I have a question:;;;.does the stock 883 use the same cams as my 2017 SPORTSTER..same ratio , lift and duration??
All 2007+ Sportsters, 883's and 1200's both, have come from the factory with "W" cams. So if the 883 you're talking about is 2007+, then yes, it came with the same cams as a 2017.
On the other hand, if it's a 91-06 model year 883, then it came with "D" cams, which are a whole different animal.
You can find a dyno sheet that compares Andrews N2's, W cams, and D cams, with no other changes, on a 883-1250 conversion at this link: www.hammerperf.com/883conversions.shtml#faq1
@@HAMMERPERFORMANCE thank you..I'm setting here thinking of. Up grading my 2017 Sportster 1200 low t to a 1275. Is it recommended?
@@robbierussell9536 Only if you want more power
@@HAMMERPERFORMANCE I guess my fuel mileage will go down some..I have a 4.7 fuel tank. I normally get 45 mpg
@@HAMMERPERFORMANCE living in Florida I put a oil cooler on it k&n air filter I run Amsoil ..And Vance and Hines 3 inch exhaust
You have competitors?
always!
You say other builders only linished the high light barrels and you only mechine yours well the one i bought a couple year of hammer are linished not cnc
We started machining the fins for the black highlighted cylinders in June of 2015. Kits sold prior to that, yes, they had the sanded finish. We are more than happy to machine yours for no charge, just send them back to us.
Do you ship worldwide?or just in US
Yes, we ship worldwide, literally every day we have packages going outside the US and we have kits in service in all corners of the globe.
We ship world wide. If you like, you can go through our contact us page and submit a request and we can figure out shipping costs for you pending on what you are looking to order.
Obviously there’s no galling issues with the steel liners? From what I understand, ductile iron is usually used because of its high resistance to galling with the rings
There was a bit of a learning curve, but we sorted it out long ago. We've sold several thousand 1275 kits with steel liners since coming out with them in 2017, into all corners of the globe, and they've been enormously successful. S&S and HD both produce steel lined cylinders for Twin Cams, so this technology is not unique to us.
@@HAMMERPERFORMANCE ok cool. I know a lot of people have these kits. I was just curious about the material choices
What type of fuel is recommended for a 1250 or 1275?
Rather than retype the explanation, click here: www.hammerperf.com/ttinstallkit.shtml#faq13 . It takes you to the specific paragraph in the kit installation instructions that covers it.
Just bought my kit last night!!!! Thanks from NYC
did you get it installed yet. i have a 883 and I'm not sure about the labor cost and all that so i'd appreciate some help
I’m looking into buying the 1275 kit for my 883 wanted to know what kit would work best with 1987 sportster 883
Sure, see here: www.hammerperf.com/883conversions.shtml#basic
Is there anything available between the
78 in. /1275 and the 88 In. / 1450 ?
ie. 1340 - 1375 ??
For '07 up 1200's
Yes, but custom cylinders are required. Really the only reason to go for an odd size is the need to meet displacement limits in a particular racing class.
@@HAMMERPERFORMANCE and of course custom (3.700) pistons and boring the cases... but I never do anything easy. Just seems to me that 88 / 90 inches on that bottom and transmission is pushing the limits. And I don't particularly care for the iron cylinders. Can we get a 4.10 o.d. (or more) liner in the aluminum jugs ?
@@johngilbert6810 I'm sorry, we have nothing available and I'm not aware of anything in the aftermarket to support that. You're talking about an extremely small market and I really doubt anyone has invested in the development of the cylinders. Everyone does 88 or 90ci. The bottom end, primary, and transmission can handle it no problem.
How long does a basic conversion kit usually take to ship ?
One week on average
@HAMMER PERFORMANCE Awesome ! Just curious cause I already ordered mine and I'm excited lol. Thanks You Guys are THE BEST !!
Also I know yall say cam is kinda a waste but I had gotten a great deal on a N2 so I'm gonna stab those in as well . Figure F it why not.
@HAMMER PERFORMANCE I received my kit maybe I'm over looking it . But where might I find the assembly lube I didn't see it ? I'll just run and grab some . Does it really matter what kind ?
@@jesslittle7110 Please contact us using this form: www.hammerperf.com/contactus.shtml#salesform . RUclips is not a good venue for doing customer service. Thanks.
What web site would you recommend me to buy the heads for my 883 Harley Sportier To convert to 1275 ?
There is no need to change your heads when converting to 1275. In fact, the vast majority of 883-1275 conversions are done without changing the heads. See this package for example, it includes everything you need for a successful conversion and it works fine your stock 883 heads: www.hammerperf.com/883conversions.shtml#basic . The higher power packages described immediately after that one also use your 883 heads, but those packages require you to send your heads to us for work. That's still a lot cheaper than replacing the heads, though, on a horsepower per dollar basis.
@@HAMMERPERFORMANCE Would the 1275 work on my new 2020 iron 883. And how much would it cost to have it converted if you don't mind me asking.
@@malkiyahyasharel1964 You can see the pricing on the complete conversion package and even order it at this link: www.hammerperf.com/883conversions.shtml#basic . That package has everything you need for a successful conversion. You can download the sample quote there for a complete list of what it comes with. As far as installation goes, more than 90% of our customers install it themselves. We've built our business around do-it-yourselfers and we have good instructions and videos to show how it's done. If you want to farm it out, you can probably expect about 7-8 hours of labor due to the fact that your bike also gets a clutch upgrade (included in the package).
So od on the spigot is 4 inch is that the same as stock?
The spigots are stock 3.675 o.d., no case boring required. The 1250 and 1275 are bolt-ons that can be installed in an afternoon without even pulling the motor out of the frame.
4 inch o.d. spigots are used on 88ci (3.813 bore) and 90ci (3.875 bore) kits. Those kits require a full tear down for case boring.
how badly does the mpgs drop when doing a conversion??
Most customers report an improvement in fuel mileage after the conversion. It makes sense, too, because the motor is more efficient largely due to the increase in compression that typically comes with a conversion. But it's a difficult thing to quantify because there are so many variables, so it's not a claim we make.
Would the 1275 kit work for 2009 XR1200 ?
Yes, we have many customers who've successfully installed the 1275 kit onto their XR1200. It uses a little different head gasket from a standard 1200, but it's otherwise the same kit. We provide the correct gaskets with the kit. Also be aware that we do not offer the gray color cylinders like the stock XR1200 models came with. Most XR1200 owners go with straight black instead. If your bike is an XR1200X then we do offer the black highlighted cylinders to match. You must also use a capable flash tuner. We recommend and offer the Dynojet Powervision and support it directly with a tune, so your life is a lot easier if you go with a Powervision. And finally you must also run the spark plugs we specify, which are actually the 10R12X Gold plugs that were stock in XR1200 and certain Buell models, part number 27794-08.
Thanks for the quick response
please save up some money ,so you can buy a mic. and also see if you can get some more shops to sell your kit´s over here in europe regards Sören
Hi Soren
Thanks for the insight!
We just got a Mic!
i also think even though i live in denmark, you should try and get some off your kit´s tüv approved maybe reach out to eightball customs they do sell alot off sportster parts
regards
Sören
Did you say that would fit on an 86???
Yes, we offer 1250 and 1275 kits for all Sportster models from 1986 to present, as well as all Buell tube frame and XB models.
I got a stock 883 what kit should i buy for bolt on. 1250 or 1275? Thanks for great video.