Another excellent video. The diagram’s explanations were a great help especially the gear ⚙️ ratio charts. It was very cool to see how the 10-51T even with the 42T its a lower climbing gear than the 2x yet only a 0.16% difference in the top end. That’s barely a fraction of a wheel turn when high-tailing down the tarmac. No brainer there 42T x 10T-51T to replace my 2x11
I am glad to see GRX (and 105) in mechanical 12 speed - electronic is all well and good - but not worth the cost imo and the whole tactile feeling of shifting and riding is what I love about mechanical groupsets.
The one exception is the new RX880 wheelset, it is Micro Spline / HG L2 compatible only (12-Speed Cassettes), meaning no 11-Speed Compatibility. I hope Shimano launches an 11-40 Cassette for the 2x Drivetrain later. I asked multiple times about this particular ratio while at the camp.
FYI, 11-40 in 11-Speed at least, works perfectly with 48/31 GRX rings. I showed a little of that setup from my adventure in Rock Cobbler earlier this year. As I was running GRX Di2, I ran the system in Syncro mode 2, which drops to the small ring and shifts a few gears across, when you attempt to ride big ring / largest cog.
I'm running this exact combo right now except on a mechanical group. It works so well. And I think the gaps on the 11-40 is perfect. If they do come out with a 12-speed 11-40 something like this would work very well 11-13-15-17-19-21-23-26-29-32-36-40@@GravelCyclist
Great to see they didn’t ditch the 11spd Crowd. You know we heading for that plateau were everything will be cross platformed between all variants. Gaps are closing fast.
v1 GRX Shimano's big mistake was not designing rear mech to accommodate MTB sized cassettes. Everyone I know switched to SRAM Eagle gearing for gravel or had to hack the rear mech with third party kits like Garbaruk to get a true 50t cassette. Ridiculous. Now two plus years later they are catching up to SRAM and what they should have done in the first place.
Shimano cues 2x seems to support 46-30 (and 36-22) doubles with 11-45 cassettes so it would be interesting to see if the existing mtb 12 speed 10-45 cassette would also work on GRX 12 speed 2x (and microspline hub).
Works great, best improvement for mech. GRX Fans and long distance gravelbiker w/ heavy ascendings. 51T saves you power, give a lotof perfomance on steep single trails and 10T let you perform downhill much more. Had a great experience riding 12s so on Gravel so far. Expensive but a great improvement.
Shimano is still entirely focused on racing for these products. If you are bikepacking or touring, run panniers, bags, whatever - and ride mountain routes or long distances, while limited to 40 and 42 chain rings is madness. Racing Unbound? Great, makes sense. Doing a 2-week tour in Austria or Italy, forget it. SRAM will continue to own the off-road / touring market until Shimano figures out there is a world beyond racing. Or, maybe they don't care, which is also fine. Unlike years and years ago, there is zero quality difference between the brands, so Shimano just loses the non-race market.
Hi! With 1x with 10-51 what will be the size of the ring to have same speed than. 48x11 equivalent. I do bikepacking with some bags but also some road gravel so not sure if 1x or 2x... Thanks a lot
Are the new shifters compatible with mtb rear derailleurs.... Thinking of using a XTR rear derailleur to save some weight and to get better shifting precision
I have the 1x11 GRX and wish they had just one more cog in the mid range for slightly smaller shifts at cruising pace, and one more bigger cog at the end. Hard to justify swapping that out at this point. Thankfully I live in the Midwest in the U.S. so I don’t really need a granny gear.
Give it a little time, the wheelset you have may produce a Micro Spline cassette body option soon? I am expecting we may see some third party 12 speed cassettes that start with an 11T cog and possibly have similar range to Shimano's 10-51T?
After this review you're going to need a bit of the bubbly to wet your throat. What about that weird looking diverge. It certainly diverges from the normal look 😮 of a bike. It kinda reminds me of Gram Obrees bike. Thirdly I think from what I heard and seen (from your channel of course 😊) is Campy and Sram appear to be better for gravel Your thoughts please unbiased of course 😊
This new GRX group is overpriced nonsense. I converted my GRX 812 2x11 from 11-32 to 11-42 with an SLX cassette. I have the RD GRX 812 rear derailleur with a medium cage. At the front I have a gradation from 31 to 48. The Wolftooth adapter for the rear derailleur and the cassette including chain only cost me €110. And it works perfectly. This combination is unbeatable, especially when traveling up mountains with luggage. It's just another scam to make money again, nothing else. And with a little skill, the new GRX shifter also works with an XT, SLX or Deore M 6100 12-speed rear derailleur.
Well, if someone builds up a new bike and needs to decide for a 1x mech. groupset, I would say the GRX 12x is the best choice... especially now as the pricing is "fair" (for nowadays prices)
@@GravelCyclist You’re right Jom. Now to “mansplain”. It’s 2:33am here in Melbourne. My partner’s unwell so I was up making her some tea and running her a bath and saw this pop up and had been waiting for this to drop for ages and had to say “something”. Anyway, just watched the vid; like you I’m disappointed there’s no 11-40 HG option. Also disappointed there’s no 165mm length 810 crank (there is in 600 series) but happy there’s now a default 38t 1x option. Also disappointed there’s no 160mm 600 series crank (for the g/f). 🤟🏻
Haha all good, had to give you some grief. Firstly, sorry to hear about your partner, hopefully she gets better sooner, rather than later. Thinking your GF may need to look at some of the third party crank options offering shorter lengths. I really hope Shimano produces the 11-40 12-Speed ratio for 2x later.
@@GravelCyclist Thanks dude. She’ll be right, tail end of Winter here - you know how it drags on and if you avoid getting sick early it bites you right before Spring. For her rail trail bike, I had to find a 160mm square taper crank and used a “hope” 34t 1x chainring. I recently went with 105 di2 on my all-road bike. The 11-36 is pretty good. I see 105 mech dropped officially today as well. Maybe we’ll get our dream 11-40 (or 11-42) HG cassette when Di2 GRX eventually drops. The cage on the 12 speed 105 stuff is very very big - will undoubtedly work with a cassette like that!
Road crank and fd paired with a GRX rear mech has been my favorite setup.
Another excellent video. The diagram’s explanations were a great help especially the gear ⚙️ ratio charts. It was very cool to see how the 10-51T even with the 42T its a lower climbing gear than the 2x yet only a 0.16% difference in the top end. That’s barely a fraction of a wheel turn when high-tailing down the tarmac. No brainer there 42T x 10T-51T to replace my 2x11
I am glad to see GRX (and 105) in mechanical 12 speed - electronic is all well and good - but not worth the cost imo
and the whole tactile feeling of shifting and riding is what I love about mechanical groupsets.
The review we all waited for. Good to see that everything seems to be backwards compatible with 11-speed versions.
The one exception is the new RX880 wheelset, it is Micro Spline / HG L2 compatible only (12-Speed Cassettes), meaning no 11-Speed Compatibility. I hope Shimano launches an 11-40 Cassette for the 2x Drivetrain later. I asked multiple times about this particular ratio while at the camp.
@@GravelCyclist 11-40 would make sense. 10-45 has big gaps, and the 10t cog is useless IMO. I would need smaller chain rings to use the 10t.
FYI, 11-40 in 11-Speed at least, works perfectly with 48/31 GRX rings. I showed a little of that setup from my adventure in Rock Cobbler earlier this year. As I was running GRX Di2, I ran the system in Syncro mode 2, which drops to the small ring and shifts a few gears across, when you attempt to ride big ring / largest cog.
@@GravelCyclist I saw that vid 😁
I'm running this exact combo right now except on a mechanical group. It works so well. And I think the gaps on the 11-40 is perfect. If they do come out with a 12-speed 11-40 something like this would work very well 11-13-15-17-19-21-23-26-29-32-36-40@@GravelCyclist
Great to see they didn’t ditch the 11spd Crowd. You know we heading for that plateau were everything will be cross platformed between all variants. Gaps are closing fast.
Shimano claimed during the camp 11 speed GRX support will be around for a while. Let's hope!
Please bring us the 11-40 cassette and matching 2x RD!
v1 GRX Shimano's big mistake was not designing rear mech to accommodate MTB sized cassettes. Everyone I know switched to SRAM Eagle gearing for gravel or had to hack the rear mech with third party kits like Garbaruk to get a true 50t cassette. Ridiculous. Now two plus years later they are catching up to SRAM and what they should have done in the first place.
Yeah they must have done that intentionally. It was obvious on my first mountain ride.
SRAM is better value for money
It looks like they just recycled their mtb rear mech. They should've done it earlier when they released the deore 6100
Fair enough Sram has dropped its Red Etap 11 roadie customers big-time imho.
Shimano cues 2x seems to support 46-30 (and 36-22) doubles with 11-45 cassettes so it would be interesting to see if the existing mtb 12 speed 10-45 cassette would also work on GRX 12 speed 2x (and microspline hub).
I love rhe Shimano 12s MTB stuff but literally a month ago built a gravel bike with the GRX 11s stuff...HG+ from the 12s stuff is so good under load.
Works great, best improvement for mech. GRX Fans and long distance gravelbiker w/ heavy ascendings. 51T saves you power, give a lotof perfomance on steep single trails and 10T let you perform downhill much more. Had a great experience riding 12s so on Gravel so far. Expensive but a great improvement.
I prefer no batteries in my bike stable, so my upcoming gravel build will definitely feature 12S GRX components.
Shimano is still entirely focused on racing for these products. If you are bikepacking or touring, run panniers, bags, whatever - and ride mountain routes or long distances, while limited to 40 and 42 chain rings is madness. Racing Unbound? Great, makes sense. Doing a 2-week tour in Austria or Italy, forget it. SRAM will continue to own the off-road / touring market until Shimano figures out there is a world beyond racing. Or, maybe they don't care, which is also fine. Unlike years and years ago, there is zero quality difference between the brands, so Shimano just loses the non-race market.
hey GC! I don't see the stroke lever adjust screw. does it have it?
The short cage looks like it came from the 10 speed cues derailleur
Hi! With 1x with 10-51 what will be the size of the ring to have same speed than. 48x11 equivalent. I do bikepacking with some bags but also some road gravel so not sure if 1x or 2x...
Thanks a lot
Bookmark this website - www.sheldonbrown.com/gear-calc.html - Many thanks to Sheldon Brown (RIP) for this resource.
I would like to know when 12 speed GRX DI2 will be released or if I should go with SRAM.
You need to ask Shimano, I have no idea. It's in the works is all I can tell you.
10-51 is also good for us old farts when climbing. 😏
is it fast in a flat road surface?
Depends on how fast you pedal.
😅..vs a 105 in a flat? with same power @@GravelCyclist
Are the new shifters compatible with mtb rear derailleurs....
Thinking of using a XTR rear derailleur to save some weight and to get better shifting precision
I confirmed this with Shimano, they said, no. Sorry.
I have the 1x11 GRX and wish they had just one more cog in the mid range for slightly smaller shifts at cruising pace, and one more bigger cog at the end. Hard to justify swapping that out at this point. Thankfully I live in the Midwest in the U.S. so I don’t really need a granny gear.
I was waiting for the 12s to build a 1x bike, but the wheels are HG, not microspline. Guess I’ll go with the cheaper 11s then.
Give it a little time, the wheelset you have may produce a Micro Spline cassette body option soon? I am expecting we may see some third party 12 speed cassettes that start with an 11T cog and possibly have similar range to Shimano's 10-51T?
Would an 11-51 12 speed cassette work on your hub, with this system?
@@GravelCyclist Any news regarding that meanwhile? Can't see much yet.. seems to stuck
@@hellebarde1450 I have not seen or heard anything.
Would the new shifters be compatible with Shimano XT 1x12 cassette (10-51) + Shimano DEORE XT M8100 rear derailleur?
You are about the third person to ask this question. According to Shimano, that would be a no. Different cable throw ratio for the MTB derailleur.
@@GravelCyclist Oh I see, that sucks 🤮
@@FreedomOfSport Sorry!
Think this will be the next upgrade. PA mountains on a 2 x 11 works, but 2 x12 seems better!
After this review you're going to need a bit of the bubbly to wet your throat.
What about that weird looking diverge. It certainly diverges from the normal look 😮 of a bike. It kinda reminds me of Gram Obrees bike.
Thirdly I think from what I heard and seen (from your channel of course 😊) is Campy and Sram appear to be better for gravel
Your thoughts please unbiased of course 😊
This new GRX group is overpriced nonsense. I converted my GRX 812 2x11 from 11-32 to 11-42 with an SLX cassette. I have the RD GRX 812 rear derailleur with a medium cage. At the front I have a gradation from 31 to 48. The Wolftooth adapter for the rear derailleur and the cassette including chain only cost me €110. And it works perfectly. This combination is unbeatable, especially when traveling up mountains with luggage. It's just another scam to make money again, nothing else. And with a little skill, the new GRX shifter also works with an XT, SLX or Deore M 6100 12-speed rear derailleur.
I prefer a 2x, but I'm glad your modified 1x setup is working out nicely for you.
@@GravelCyclist my Setup ist already a 2x
@@list1278 Oops, missed that. I had 11-40 working nicely without a Wood tooth adapter, but good to know 11-42 works.
Well, if someone builds up a new bike and needs to decide for a 1x mech. groupset, I would say the GRX 12x is the best choice... especially now as the pricing is "fair" (for nowadays prices)
Firsssssstttt 🎉🎉🎉
Duuuuuudddddddeeeeeee. Lift your game, that's a bit lame.
@@GravelCyclist You’re right Jom. Now to “mansplain”. It’s 2:33am here in Melbourne. My partner’s unwell so I was up making her some tea and running her a bath and saw this pop up and had been waiting for this to drop for ages and had to say “something”. Anyway, just watched the vid; like you I’m disappointed there’s no 11-40 HG option. Also disappointed there’s no 165mm length 810 crank (there is in 600 series) but happy there’s now a default 38t 1x option. Also disappointed there’s no 160mm 600 series crank (for the g/f). 🤟🏻
Haha all good, had to give you some grief. Firstly, sorry to hear about your partner, hopefully she gets better sooner, rather than later. Thinking your GF may need to look at some of the third party crank options offering shorter lengths. I really hope Shimano produces the 11-40 12-Speed ratio for 2x later.
@@GravelCyclist Thanks dude. She’ll be right, tail end of Winter here - you know how it drags on and if you avoid getting sick early it bites you right before Spring. For her rail trail bike, I had to find a 160mm square taper crank and used a “hope” 34t 1x chainring. I recently went with 105 di2 on my all-road bike. The 11-36 is pretty good. I see 105 mech dropped officially today as well. Maybe we’ll get our dream 11-40 (or 11-42) HG cassette when Di2 GRX eventually drops. The cage on the 12 speed 105 stuff is very very big - will undoubtedly work with a cassette like that!