This worked super well for me. GRX 11s shifters. Garbaruk 10-50 11s XD. Eagle XX1 12s chain. Shimano GRX 822 SGS 12s derailleur. Absolute Black 42t chainring. Shifts super well. Better than my Eagle MTB Garbaruk setups. Love this combination on my gravel bike. Caveat: check your B limit. I found that matching the line on the derailleur (meant for a 51t) to the 50t Garbaruk was spot on. The other thing. Use the Shimano recommended chain length (4-5 links+ quick link on big to big). I cut mine too short (2 links, vs the 4) and it skipped on the 10t cog while riding. With the right length it shifts better and no skipping.

I wanted to try this, but multiple mechanics told me it wouldn't work. In my mind, it made total sense, but they kept telling me that the grx 822 sgs pull ratio wouldn't allow it. Thanks for confirming my hackster suspicion.

@bljordan1055

6 ай бұрын

Bike shops will tell you any changes to a drive train is incompatible because they want more money. I'm running my old XTR 8 speed rear derailleur on a 10 speed bike. I'm also running 8 speed chainring and crank on a 1x11 bike.

@TheBikeSauce

6 ай бұрын

More likely that shop mechanics don’t have extra hours to burn tinkering with something that may or may not work.

@davidcummings5826

6 ай бұрын

Or they don’t want to get blamed for putting two different systems together if something goes wrong (even if it’s not a compatibility issue). They’ll sell you whatever you want, they probably just won’t put it together for you unless it’s in the same system.

@user-sm1ur5bk2r

6 ай бұрын

​@@TheBikeSauce7-8 скоростей лучше. А дуракам и 14 мало Поколение дураков почему вы 🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡💩💩💩💩💩

@Ghostina1

6 ай бұрын

Otherwise there is always Garbaruk with its large cage upgrades for any derailleur

The Maverick Reynolds 725 gravel frames look really nice- their single speed bike is nice too.

Glad to see the pull ratio is almost the same 💯

@TheBikeSauce

6 ай бұрын

"Almost" could mean identical - I didn't confirm that.

I was really hoping this would work. Thanks for confirming.

Really great video, and thanks for the shop reference

Actually, on a lot of frames this can be done with an 11 speed GRX812 and a 5100 series MTB cassette. And with a WolfTooth Roadlink with virtually any frame. Tried and tested. Cost me a total of 60€.

My only issue with GRX 11speed was the low cassette capacity - this solves the issue of having to buy new wheels (or a new freehub) to go to the range of 12 speed. Great solution, probably gonna put this on my bike once the cassette is worn!

@MrKipperfish

6 ай бұрын

Well established that the Shimano specs for grx 11 are VERY conservative. 11-40 on the 2x and 11-46 on the 1x RDs has been proven possible for years now. That's plenty for most gravel riders.

@Fango925

6 ай бұрын

@@MrKipperfish eh you could run 46 but depending on the bike it's not optimal. Plus, I'd rather run 40/11-51t than 38/11-46, especially when gravel is turning more and more aggressive, lots of people run grx on Dropbar ATB's/MTBs so while 32/11-46 is fine for 11speed mountain, it lacks the higher end that you need riding pavement. 51t opens up a few different build options that 46t doesn't

@LukeRichardson1981

6 ай бұрын

@@Fango925 I agree. I run 46 on my RX812 derailleur and while it does work it's not as smooth / precise shifting as Ultegra R8000 was for me.

@habanerooperations8432

5 ай бұрын

Why not use Ultegra RX?@@LukeRichardson1981

@lastfm4477

Ай бұрын

@@MrKipperfish I have an 11-42 with my GRX 10sp RD.

Great Video. Followed the guidance and converted my bike to this 11 speed mullet with the bigger 51T cassette. It’s awesome 😊😊😂

@andrewolzon8352

27 күн бұрын

Hi, what is your opinion after one month of using it? Any issues araised?

@Tuehl00

27 күн бұрын

@@andrewolzon8352, after 400km on it, I have not had any issues. It’s been all good 👍 😊

I have the parts sitting on my desk, hope to try it this weekend, thanks for the inspo. I do wish 11 speed mtb was compatible

@ianiscaratti4924

4 ай бұрын

Does it work?

@huaweipneun7624

3 ай бұрын

does it work?

Whoa, that's good news! I'm building a new bike and brainstorming drivetrain options right now. I guess I will go the same route as you did and couple R7000 brifters but mix 12-speed GRX derailleur instead. Looks like that would be $400 for the whole thing (I already have a GRX crankset) which is really nice.

@michaelmechex

6 ай бұрын

I wouldn't do that for a new build, at least here in europe 12 speed GRX shifters cost 20 euros more than 11 speed, that's worth it for more gear range. Also either is cheaper than mechanical 105.

My LBS did a conversion on my 2023 Marin Gestalt XR (standard GRX 800 1x, 11-42 11 speed w/ 42T chainring) at time of purchase using a M5100 11-51 cassette, Deore RD-M5100 derailleur, a CN-HG601-11 Shimano chain (OEM was KMC) and a Tanpan on an exchange basis so it only cost me about CDN $100 after the parts credit. I am coming into 700c wheels and drop bars after 35 years of casual 26" flat bar MTB riding and I can say I'm very happy with the results so far!☺

@nmonye01

3 ай бұрын

How does it shift?

@roypennock8046

3 ай бұрын

@@nmonye01 I've put about 250km (155 miles) on the bike and so far, apart from some rider error as I am new to drop bars, it's been excellent. 👍

It works for me! Grx 600 duals, rd 822, 11-46 slx and hg-701 chain

Genius👍 good idea bro,thank you!

Thanks for that. It's good to know.

Love your knowledge

Great video. Thanks!

This is good information, I was hoping to pair some 105 12s levers with a otherwise 11s ultegra bike

Always askes myself if that could work. Thanks for the Video 😮

0:49 The pull-ratio of MTB and road Shimano rear shifters was compatible until 9 speed. Even a 10-speed road brifter (except Tiagra 4700 and 10s GRX which is compatible with 11 speed) can be used with a 10-speed cassette and a 9 speed rear shifter.

Wish I had seen this before dropping the money on a Microshift Sword group. Will definitely upgrade to this once I can. Great hack thats not a hack. Awesome video!

@maritimezombie7684

5 ай бұрын

The other great part of this is you have hydraulic brakes compared to Microshift, so this is like the best option for a MonsterCross build!

Cool Idea, thanks for the informative Video and testing. However, the cheapest all-Shimano option wasn't even mentioned so far. You can swap the cage on a 11-Speed RX812 for the SGS-Version of the 11-Speed Deore XT one (M8000 Series). Inner and outer Cage plate should be about 15-20$ retail. Works great on a 11-51 Deore Cassette for me. I was originally looking into the Gabaruk cages, but this seems to be the cleaner and cheaper solution.

@TheBikeSauce

6 ай бұрын

Thanks for this. I've heard about it, but never tried. Requires a bit more technical know-how, but seems like a cool option.

@arjanschild3552

6 ай бұрын

@@TheBikeSauce wow,...good point: Capacity of 47 ! compared to 41

@LukeRichardson1981

6 ай бұрын

Interesting. I'm running a 46t cassette with a stock RX812 derailleur and it works mostly OK (Shimano states maximum capacity of 42t), but the B-limit screw has to be set really far in and the shifting isn't as precise as my R8000 Ultegra was (even though GRX 800 should be just as smooth and sharp as mechanical Ultegra). I might look into this solution to improve my shifting.

@user-zu4nl7bm9e

6 ай бұрын

@@LukeRichardson1981 Rx812 is the rebranded m8000. MTB RD is the testing bed of road RD, shimano just rebranded the MTB RD to the 12s road and grx RD.

@user-zu4nl7bm9e

6 ай бұрын

That's the point, the 12s RX822 is over 120 USD, the old one, rx812 is 60 USD plus 20 USD cages, still 30% cheaper on 12s combination. Really money saving trick.

This is AWESOME! Thanks for testing and posting this. Just ordered all the parts.

@alecs616

5 ай бұрын

Hello! Did you try it? I just installed this setup but with a 11s xt cassette and it does not work.

@jeremywishart9934

5 ай бұрын

@@alecs616 Yep, I installed everything this past weekend (been to busy w/ work to get to it earlier) and it works as good...or maybe even smoother....than the older GRX stuff it replaced. A couple of thoughts to consider - is the derailleur hanger straight (?) and did you install the Shimano chain in the correct direction? New cable and/or housing? Did you back off all the preload on the old cable if you kept it and readjust accordingly?

@alecs616

5 ай бұрын

@@jeremywishart9934 checked the hanger, new cable and housing, all done by the book. It does not work. It does not go all the way to the largest cog, it stumbles around the 7th. And the shifting is crappy. However I tried another logic. Maybe it works on a 12s cassette. So I pulled out a microspline freehub, a 12s SLX cassette and chain from my MTB spares bin and installed them on my gravel. And it works perfectly, I can either use 10-45 range or 11-51. And this is kind of great. Huge range.

@huaweipneun7624

3 ай бұрын

did it work?

@alecs616

3 ай бұрын

@@huaweipneun7624no. I’ve done a second testing. Another cassette, another shifter, new cables. I managed to get it to shift slightly correctly, but it was horrible. Not viable for real world. I returned to my previous setup, with 12s but using only 11 of them.

Thank you for providing another compatibility data point (with supporting video evidence!) of this combination. There are a few instances of folks doing it on Reddit, and based on those, I just grabbed an RX822 for this same setup, but with GRX400 10 speed brifters paired to an 11-48 Microshift 10 speed cassette. I've got a Garbaruk cage on an RX812 currently which works fine, but glad to have more options!

@gustotrails

6 ай бұрын

You used a 12 sp grx with 10sp brifters? Im genuinely interested as im tired of my 2x10 grx and I want to get rid of one chainring

@DETarch

6 ай бұрын

@@gustotrails 10 and 11 speed GRX are all the same pull ratio, so the parts are all interchangeable. The shifters just determine the number of speeds that the rear derailleur moves. So if 11 speed GRX shifters in this video work with the new 12 speed GRX rear derailleur, the 10 speed GRX400 shifters should also work to shift the RX822 across 10 speeds and allow for the use of a wide range 10 speed cassette (eg Microshift 11-48). My RX822 is en route to me currently 👍🏼

@timothydoyle8269

6 ай бұрын

Correct me if i am wrong- i have GRX 400 2x , your saying that if when using the GRX 822 RD paired with the microshift 11-48 cassette. So a wide range 46/30 x 11-48 works in this instance? I’ve been running 11-40 on stock GRX 600 rear derailleur for loaded bikepacking and this would add a decent gear range without having to buy a new group set.

@DETarch

6 ай бұрын

@@timothydoyle8269no idea if this would all work with a 2x setup, all of my experience is with 1x, sorry!

@Gregorius421

6 ай бұрын

​@@timothydoyle8269 The RD pull ratio would be the same whether 1-by or 2-by. The problem is how much chain slack the RD can absolve, that's the "Total Capacity" in the specifications. RD-RX822-SGS Total capacity is 41T (usually a few more still works), however your huge range 46/30 x 11-48 would need 46-30 + 48-11 = 16+37 = 53T That's a lot of chain to keep tight, I don't think the RD would be able to. In 1-by 48-11 = 37 With 2-by the official max would be 46/30x11-36 (46-30 + 36-11 = 16+25 = 41). Another commenter said 46/30x11-40 also works with GRX 11-speed.

Unless you are running mechanical SRAM in which case you just add GX 10 speed long cage rear derailleur to your 10 or 11 speed drop bar bike and have the options of up to 2x11-42 or 1x11-46. I have throughly tested the 2x11-42. SRAM mechanical the pull ratio is the same for 10 and 11 speed road and 10 speed MTB.

Great job love the videos always looking forward for the next. I’ve been riding the Grx 812 11speed straight from the box with the deore 11-51 for 3 years no issues. I saw your video immediately ordered a 822 long cage and gave it a try for my next build but the grx 822 didn’t work. I worked on it a few hours a day for a week and ended up buying the 812 again.

@TheBikeSauce

3 ай бұрын

You’re not the first to say that. I don’t know what to say, this video shows it can work. I think some may have confused what I meant by maxing out the high limit. That’s kind of a key point, and the indexing is shifted up by one cog

@pieterlyssens7167

3 ай бұрын

Thanks for your response. Your video shows clearly that the Grx 822 works i still believe it would work. When I have a bit more time going to try it again maybe the frustration took the best of me and did something wrong keep you updated.

@cruciforme2

3 ай бұрын

I didn't the change too and looking at the alignement it seems it doesn't work... I'll check my derailleur hanger to be sure...

@pieterlyssens7167

3 ай бұрын

Next go ad it changed everything again all the hoses cables make sure all the alignments and limit screws were correct. Wish I had something else to say but it didn’t work.

@phantomracer1050

3 ай бұрын

I'm exactly the same. Swapped my 11-42t for a 11-51t running on an 11-speed GRX 812 and it works straight out the box. Just had to wind the B limit screw right in and stick on a longer chain and it was good to go. I did try the 12-speed GRX 822 initially but the alignment was way off and it was never going to work (even with the high limit maxed out). Just something to be aware of if you do try this conversion. Give the cassette on its own a go first as you could save yourself some cash 👍

Yes it will. I used M5100 cassette and RD-M8100 rear mech

@TheBikeSauce

5 ай бұрын

with GRX brifters..?

@zdravo4

5 ай бұрын

@@TheBikeSauce no, regular M8000 shifter and M8000 brake levers

5:58 the upside down headset is a nice touch

When I had GRX 11 spd I went with a e13 Helix 9-46 and a smaller chainring and it was flawless, light and no other mods. GRX is a great group. Still my favorite hoods and brifters

@gabrielfong

6 ай бұрын

Is it sloppy to shift down to the 9t cog occasionally? I've heard/read so.

@jmdrstv

6 ай бұрын

@@gabrielfong not in the slightest. I think that was an issue many iterations ago but the Helix series of cassettes are excellent in my experience.

I have the GRX 815 DI2. With DI2, you can just add the XTR Shimano derailleur (tho a bit more pricey than $127)

Wide range mtb derailleur with drop bars is possible with the Jtek shiftmate 9. I ran nx eagle derailleur, 11 speed 11-50 cassette and apex shifters for years with this.

For those w sora 9 speed shifters you can run an mtb 9 speed rear derailleur

@edzif

6 ай бұрын

I've been using Sensah Ignite brifters with Shimano Alivio 9 speed 11-36 for a year. It runs smoothly. I'm really happy with the results. Very affordable, too.

Wait... Since GRX is compatible with 105, I can also use it with my RS505! 🤩🤩🤩

I need to go to maverick! I just live 20 miles north east!

I think just because of 12 sped chain - it somehow works on video. narrower chain gives larger gap between sprockets and it didn`t make noise of friction.

this might work with 10speed too, I have a nice ultralight 10speed 11-50 cassette to try

Same Thing should work with 10 speex GRX parts. A GRX 400 brifter can shift an 11 speed GRX 1by rd. But only for 10 speed cassettes ofc

@A3welg

6 ай бұрын

Who makes long range 10 speed cassettes?

@pipi1485

6 ай бұрын

@@A3welg the 1x11 grx Rd officially clears a 11-42 cassette, Shimano makes a 10 speed 11-42 deore cassette that can be used.

@DETarch

6 ай бұрын

@@A3welg Microshift makes an 11-48 10 speed cassette. The version with alloy carrier is reasonably light too.

@TheBikeSauce

6 ай бұрын

Right. For 10sp, there are more options available. Microshift for instance. It gets trickier with 11 speed

@martinmaertin

6 ай бұрын

10 speed GRX should share the Tiagra pull ratio, which is different, but I might be wrong.

Very nice video. Greetings from Brazil. From what I understood, it is also possible to use GRX 822 RD with R7000 105 STI, with a 1x11 setup.

@travischapman6763

4 ай бұрын

This is what I hope to do.

Friction shifting! This is why Russ worked to get that 12 speed friction shifter made with Merry Sales! Stop letting them sell you manufactured problems like road and mountain incompatibility.

@TheBikeSauce

6 ай бұрын

Haha the UNO works really well technically, but it isn’t for everyone. I enjoyed it because it worked with everything, but I’m too used to quick shifts from the hoods

10 speed grx (and tiagra) also have the same pull ratio. So it should work with 10 speed shifters.

@since1990vfb

2 ай бұрын

tested it and did not perform very well - all the gears were shiftable in the stand but I was never satisfied with the qualitiy / crispness of the shifting…

@NatalieUoker

Ай бұрын

@@since1990vfb I will test the 10-speed levers on my own with a 12-speed derailleur. Now I tested the R7000 levers with the RX400 rear derailleur (it replaced the R7000 on my road bike +). It works great.

@vbnxt

Ай бұрын

I’m on a 2x10 GRX 600/400 setup and want to try this too. Curious how your experience was. Thanks

This is a great vid! I'm waiting for the grx 11 speed brifters to be on mega sale, then I'll pull the trigger on this. I'm currently running a microshift bar end with a M5100 rear derailleur. BTW....the M5100 and the grx 822 rear derailleurs look very similar! I'm assuming the pull ratios are slightly different?

@user-zu4nl7bm9e

6 ай бұрын

You need the shimano road pull ratio shifter to run the grx RD. GRX and MTB share the same cassette, but the pull ratio of RD is different.

This is the first video I've seen on this, thanks for posting! BUUUT, Ive heard of this on Reddit and Weight Weenies and went to try it myself. I run the 11 speed GRX on my Redwood and wanted more than the 46 limit for the Cascades. I got the RX822 SGS and the M5100 11 speed cassette using a 11 speed chain with a Wolftooth Drop Stop chainring. Set it up and could not use more than 10 of the gears regardless of my knowledge of indexing. Could you do a more step-by-step on this? LBS won't touch it but I know it works!

@TheBikeSauce

6 ай бұрын

Some things to try. Make sure the hanger is straight. Set b limit screw according to the gauge on the back of the rd cage. Max out the high limit screw, and adjust low limit to prevent chain popping off the high side.

Kevin is awesome

Hey man, this is great news as I was about to pull trigger on Garbaruk parts. I'm really interested in how the 12sp chain works and if you find the 11sp a better option? I'm concerned the 12sp jockey wheels wont like the 11sp chain. Thoughts?

A real bike shop with cool stuff and serving coffee. There is hope.

I believe cable pull was the same up to and including 9-speed Shimano, and only after 10-speed DynaSys made it worse/impossible to mix mtb and road rear mechs and shifters

I'm riding a Canyon Grizl 6 with a GRX 10-speed 2X setup but I really want to decrease my gear inches on the low end. The GRX-400 rear derailleur is paired to an 11-34 cassette and the front 2X chainring is an RX600 crank with 46-30T rings. I would love to get a larger cassette and/or smaller chainring to help with lowering my gear inches as I use the bike for touring and climbing with an added 50 pounds is really difficult at 25 gear-inches. As it stands now, the rear derailleur only supports up to a 36T cassette, which does almost nothing to lower the gear-inches, taking it from 25 to 23. The goal would be to get that to sub-20 but I am having a time finding drivetrain combos that would work. Any suggestions?

As i understand it pull ratio are actually completely different but somehow compatible. If pull ratio were the same it would work too but with a 12 speed casette using only 11 speed of it. I would love so hear long time report to see if it's not to finicky. Edit: my bad, pull ratio should be identical for it to work. Cable pull on the shifters is probably different.

There actually should not be any need to swap out the front ring, as 9 to 12 speeds chains all have the same inner width of 2.18 mm (11/128″). Only the outer width is different for each chain type, and as it is a 1x setup, the outer width does not matter. Great video btw!

@VladGoro25

6 ай бұрын

didn't know 11 and 12sp chains have same inner width. interesting

@TheBikeSauce

6 ай бұрын

Yea I thought the same. Wolftooth does differentiate, however, between their Dropstop B, and Dropstop ST version. Not exactly sure the difference, but it worked pretty well in this case.

@MrKipperfish

6 ай бұрын

@@TheBikeSauce The difference is clearly explained on the product page for every single wolftooth chainring that comes in a ST version. It's all about the extended inner plates, look at the diagram. The effective inner width is NOT the same as 11 speed when it comes to 1x. In the case of WolfTooth, running a 12 speed HG+ chain on a 1x ring made for 11 speed shimano chains will be louder and will wear the ring (and likely the chain, though chains are much harder than rings) faster due to the interference of the extended 12 speed HG+ plates with the wider wide teeth on the 11 speed ring. There's really no reason to run an HG+ chain in the setup detailed in the video. The only consideration would be for pulley wheel fit on the chain, but I doubt that will have an appreciable effect on shifting performance. Shimano has always had a rather loose fit of pulley teeth on the chain in the laterial dimension, and doesn't do narrow/wide pulleys. So as long as those 12 speed pulleys have teeth which are the same or very close width to 11 speed pulleys, shifting should be pretty much the same.

@DonnieX6

6 ай бұрын

@@TheBikeSauce Oh yeah, seems like Shimano indeed changed the internal shape with their new 12-speed HG+ chain a bit from their 11-speed counterpart even though the internal width is the same, interesting! I only use up to 11-speed on all my bikes, up until here everything plays nicely together ;)

@dropbaran

6 ай бұрын

Yep, across 9 to 12 speed chains only Shimano HG+ (12-speed) is internally different and doesn’t play well with 9-12 speed single chainrings

Sensah srx/sram rival 1x shifters and sensah srx rd and you can ran everything you want up to 11-52

Taking out the money part of it which do you prefer, the Garbaruk you used on your Ritchey or this all Shimano solution?

Great vid like Always!! I have a Felt BREED Advance 2x12 that I want to convert to a 1x. shimano Rx 820 rear derailleur. What would I need? T.Y.

Can you please try the compatibility between cues and 105?

I’d love to know what you mean by maxing out the high limit screw. I bought the derailleur to try this and haven’t found the need to wind the high limit all the way in or anything. It had to be wound in a bit but only what seemed normal for setting up a derailleur. My results aren’t as good as yours. My shifters are a bit old and beat though. There seems to be a compromise between the derailleur shifting into the low gear easily but not shifting up to the last 3 high gears easily or not getting into the 51T at all and having good high end shifting. It’s probably a bit better than the performance with the tanpan and RD-M6100.

@cruciforme2

3 ай бұрын

Maxing out limit screw doesn't make much sense. I did the migration and by looking at the alignement between the pulleys and the cogs it's clear it's not compatible.. the derailleur doesn't move enough and isn't aligned anymore at the end of the cassette.. I'll buy 12 speed brifters..

@glenslough910

3 ай бұрын

@@cruciforme2actually, I gave it another go and re-set it up. Works better than the tanpan at least! Thanks @bikesauce

I had some trouble getting this to work, but the problem turned out to be chain length. On my 36t chainring, I needed to add two links to the chain to get the correct chain length. The standard Shimano XT chain is 116 links, which is ok for 34x51, but for 36t you need 118 links. When I finally found the dealers manual it says you might need to add up to 6 full links! So frustrating that the standard chain length is too short.

I want to do something similar on a road bike. My new bike has Shimano 2 by 12 mechanical 50/34 and 11/34. My idea is to get the GRX derailleur with a 12 speed 11 to 51 cassette and replace the 34 up front with a 47 tooth chainring. I call this setup "inbetween" gearing. Others call it "halfstep". This yields 24 unique gear ratios over the entire range. What are your thoughts and would it work? Thanks

Does the RX822 rear derailleur support a 11speed chain, or does it require a 12 speed chain (as a tech newbie, I wonder: are the jockey wheels specific to the width of the 12s chain?). Also curious: Is this an "officially" supported setup by Shimano, or just something that happens to work because of the identical cable pulls between 12 and 11s? Thanks for the great tip!

@TheBikeSauce

6 ай бұрын

I'm 99% sure you can run an 11sp chain with the 822. Jockey wheels wouldn't have any effect on it. This is definitely not officially supported by Shimano 😀

@dantsai

6 ай бұрын

Cool, thanks for this!

2:22 : What exactly do I have to do to limit the 12-speed GRX RD-RX822 SGS rear derailleur to 11-speed? This was explained to me too quickly in the video. Are there step-by-step instructions for doing this yourself?

❤

Does it matter on the chain as the inner diameter would be the same between 11&12?

I tried to migrate from GRX600 2x11 to GRX610 2x12. I bought 2x12 shifters, 12sp cassete and 12 sp chain. Rear derailleur GRX812 remained and it doesn`t work with 12sp shifters. 12sp shifters pull little bit more cable in 1 click. So if smallest sprocket works fine, - coming to the larger sprockets - chain starts to rub larger sprockets and needs to let loose the cable. After this - larger sprockets work fine but smaller work worse - needs to pull up the cable again.

So let me confirm: you can use 11spd GRX brifters to drive a 10-51 12spd cassette by adding the 822 RD but do you have to choose which of the far gears that you ‘eliminate’? Ie the 10 or the 51 since the brifters only will operate 11spds? Edit: I see you actually use a 11spd 10-51 MTB cassette, nm.

did that require to change the 11s chain to 12s chain due to much larger size of the 50T?

Hmmm, I attempted this and am having issues, maybe you could shed some light on it for me. I have the 11 speed ST-RX600, RX822 SGS derailleur and the 11 speed 11-51t cassette and I can’t get it to shift to the 51t. I can push the mech and make it move the chain up to the 51t but I’m unable to shift it there, but have no problems shifting from the 11t to 45t. Conversely, I can set up the derailleur to shift from the 51t to the 13t but not to the 11t. Uncut KMC x11sl chain. Love your vids, especially the deep dives!

@cruciforme2

2 ай бұрын

I personally think the pull ratio doesn't match and works more or less. There are now too many reports of issues.

@TheBikeSauce

2 ай бұрын

Sounds like a limit screw is too restrictive the moment. Have you backed one out a bit? You only need to limit the rd at one end

Hey Nolan, thanks for vid! Speaking as someone who hasn’t had their coffee yet, it seems like there isn’t any reason this also wouldn’t work with a 2x setup. What do you think about the possibility of pairing this hack with a wide/low double for even better climbing capability?

@TheBikeSauce

6 ай бұрын

Morning! You mean a 2x paired to an 11-51t cassette? Perhaps in theory, but I’m not sure there’s any rd with that total capacity

@vongdong10

6 ай бұрын

It won't work. I tried doing this with a sram rival axs setup with a 10-52 cassette and 43/30 crankset. There is too much of a chain slack in the large ring and small cog. Like there was no tension at all.

@mattkavanaugh5623

6 ай бұрын

I was wondering the same thing. I have 2x GRX that I would like to make wider range in the rear cassette. Currently I have a 31x47 chainrings and 11-36 cassette with RD hanger extender. Shifting is workable but not great. Would this GRX RD hack with long cage work if I converted by 2X to 1X chain set not by changing the cranks but simply by using only one chain ring? Thanks for the great videos.

@TheBikeSauce

6 ай бұрын

@@mattkavanaugh5623 I wouldn't run just one of the original 2x chainrings. Rather, you can get a Wolftooth dropstop 1x narrow wide chainring for the GRX cranks.

@AG-el6vt

6 ай бұрын

There is only one series of 10+ speed rear mechs I can think of that can reach close to that capacity: the Microshift XLE. E.g. the RD-M665L model, with 47T capacity and max 46T big cog. A sub-compact 2x crankset, e.g. 46/30, would only really work perfectly with 11-42T without getting in trouble. As I don't own one, I don't know if you can go bigger than that as you can with most Shimano derailleurs, but maybe someone out there has tried it out?

May i also know the teeth count of the chainring being used in the video. Thanks

Bro! 810 series works with 2x11 and 42T cassete without changing anything :) Also Sram 11s cx derelieurs works with Shimano/Sunrace 11s 51/50 cassetes but you need to put 12s Eagle cage nad pulleys :)

@TheBikeSauce

5 ай бұрын

missing the point?

You say that cable pull between road and mountain have "always" been frustratingly incompatibles. This is not really true, as until 9 speed, everything was compatible with everything ! Which make 9s peak technology in my opinion...

@TheBikeSauce

6 ай бұрын

Yes, you’re right! I guess ‘always’ referred to post 11-speed stuff.. which is not really always 😆thanks

@Gregorius421

6 ай бұрын

9 speed is great for budget road/gravel bikes with big range.

This did not work for me with older rs685 11sp 6800 era hydro levers. Cable pull seems way different. The length of the cable lever and parallelogram seems way different than an 11sp grx derailleur.

Very interesting! Would this mean I could use the same RX822 SGS in a 2-by setup with 46/30 front and 11/40rear? Yes I know there is still a capacity issue,...but at least it is getting closer...

@TheBikeSauce

6 ай бұрын

Ha true, you’re just limited by capacity at that point. Although an 812 can easily handle up to 46 big cog with no mods

@arjanschild3552

6 ай бұрын

@@TheBikeSauce The capacity of the 822-SGS is 10 teeth more than the 812

Is there a way to run Shimano road 1x similar to SRAM? Mainly like Roglics setup in the mountain stages. Bigger ring than gravel.

@brankosabol

6 ай бұрын

Since 11 speed road and GRX are 100% compatible, this hack should work with 11 speed road shifters also. For larger chainring you just need longer chain.

Any chance this will work with the GRX 2x11? Would I be fundamentally better off with a 1x11 like on my MTB? I've just managed to get the 30x46 and 10-42 to work together but I wouldn't mind a 46t or higher cassette

Can i get my understanding straight or at least confirm what i want to so with my MTB on 1x SLX. I'm planning to prep my MTB with dropbars. So I'm going to need 822 RD and brifters, right?

Cool ! Will it work with a 105 11 speed shifter? Also can that derailleur work with a 2x cranks?

@christophericcio

6 ай бұрын

I want to know that too! :D

@TheBikeSauce

5 ай бұрын

I run R7000 105 shifters with GRX812 on the Outback. Works fine. It'll work with 2x, but not with this large of a cassette. Total drivetrain capacity would be too high.

2:22 1:31 What exactly do I have to do to limit / restrict the 12-speed GRX RD-RX822 SGS rear derailleur to 11-speed? This was explained to me too quickly in the video. Are there step-by-step instructions for doing this yourself?

Question about the canyon grizl. What frame size it is? Thanks!

So to simplify, this setup is using a 12s cassette along with 12s RD with 11s shifters? With this info, we should be able to use other 12s cassettes

@TheBikeSauce

5 ай бұрын

Sure, but you can only use 11 of the gears

On my mountain bike I have Sram1x11 cassette, 1x11 derailleur, 1x11 shifter, 12 speed eagle chain, 12 speed eagle chain ring 34 tooth, works really well.

does the pull ratio being nearly identical mean that I could run Shimano 105 11 speed mechanical brake shift levers with a 12 speed GRX group set?

Hey @thebikesaurce, i tried this on the weekend without success. On a 2022 Giant Revolt with an existing 1xGRX 11sp setup. I used the CS-M5100 11-51 11sp cassette, GRX RX 822-SGS and a new 11sp chain. Unfortunately, for some reason, the 39t sprocket skipped, clunked and carried on. No amount of indexing or B-screw adjustment (noting new position) worked for me. Every other gear was flawless though. I also tried a different wheelset, new quick link, new cable, hanger alignment, however it made no difference in that 39t sprocket. I also tried a 12sp chain however it wouldn't interface with my 11sp GRX chainring. What would you suggest i try next? 12sp GRX chainring and 12sp chain perhaps?

@TheBikeSauce

5 ай бұрын

39t cog - as in the 3rd largest cog on the cassette? That is very strange if all others worked fine. Sounds like the only variable you haven’t considered is the cassette. Could you try a different wide range cassette?

@danielpeters2708

5 ай бұрын

@@TheBikeSauce Yeah, the 3rd largest cog. I dont have another wide range cassette to test with. I did think that the chain could be clipping the rivets on that specific gear, hence why you had more luck with a 12sp chain (slightly narrower). I should also state, this only occurs under load, it is not noticeable in the stand.

@lethbridgecarboot5388

5 ай бұрын

Did you solve this issue?

@danielpeters2708

5 ай бұрын

Hi@@lethbridgecarboot5388, no unfortunately I haven't revisited the issue since. I have however, read numerous reports of CS-M5100 cassettes being returned/replaced under warranty due to the rivets being loose and the 4 largest sprockets moving independent of the entire cassette body. In my case, there's a small amount of lateral cassette movement (within tolerance), and the rivets appear intact. I'm yet to check a few other online references such as the cassette splines/freehub body interface however i would assume the issue would occur underload in any gear if that were the case.

@lethbridgecarboot5388

5 ай бұрын

Good luck with that - curious to see how it works out. Cheers

Still not clear why this won't work with a GRX 810 double chainset 11 speed 48/31, or am I missing something?

@dvoob

6 ай бұрын

Chain length will be an issue. Even running 1x the GRX 12sp rear derailleur barely has wiggle room for chain length when using 10-51. Yes you could run 2x for a bail out gear, but the chain would be slack once you get to about the middle of the cassette when in the little ring in the front. Additionally clutched rear derailleurs usually don't allow smooth shifting in the front anyways.

I've been trying to make this work but so far have had no luck. I'm trying to replace an 11-42 cassette with 10-52. I cannot get it to shift up to the two largest cogs. I feel like I've tried everything: adjusting all screws, checking chain length, etc. I can get it to shift wonderfully in the smallest 9 cogs, but then my shifter feels like it's "run out of gears". This makes me think that the pull ratios are different. Do I need different shifters? Anyone else run into this? Please help!

We have the same cassette, same derailleur but with RX600 shifter and we can't get it to work. We checked everything even if the hanger is straight. It just won't work. Either it shifts ok from smallest to the second biggest cog or from biggest to the second smallest as the range isn't enough. Anyone knows if it should work? We really checked everything.

@TheBikeSauce

5 ай бұрын

Sounds like maybe you've got limit screws too far in. Basically, you only tighten up the high limit screw (for smallest cog). You want the low limit screw all the way out to let it get into the big cog. B limit screw will also need adjustment.

@digitalmilo

5 ай бұрын

@@TheBikeSauce it turned out that the cable housing was bent inside the frame and the cable was flexing. After replacing the housing it shifts.

Sorry for the late comment but I’m really hoping someone responds. Currently building my 1x up and rolling component options through my head. I have the Gevenalle CX shifters on the way which are compatible with GRX but only up to 11 speed with the index (I could just switch it to friction so I have full 12x functionality if I really wanted to). I also know the GRX 11 speed derailleur is compatible with the SRAM 10-42. So my original plan was the GRX 11 speed derailleur with the SRAM 10-42. However I’m now thinking that I should instead get the GRX 12 speed due to it having a better cassette range and setting the limit screw initially so I can’t over shift. This way I have more cassette options in the 1x11 and even the ability to switch to 1x12 with the change to friction shifting if I wanted. I guess I’m just looking for the confirmation that this does in fact make sense due to the advantages of the GRX 12 speed over the 11 speed. Thanks for anyone who reads this and responds!

On the Canyon Grizl - is it using a standard derailleur hanger or direct mount derailleur hanger? Was there a spacer at the back of the 11-51T MTB cassette and whats the thickness?

In theory, this could be done as a conversion from GRX 2x to 1x right? If I kept my same cranks, switched to a 42t chainring, got the RX822, and this cassette, my setup would be the same? I have the same bike featured in this video just with the 2x

I have a 2x10 GRX 600/400 setup- what can I do to switch to 1X?

"Maxed Out The High Limit Screw" Does this mean that the limit screw that affects the smallest cog of the cassette was turned all the way in or all the way out?

@TheBikeSauce

6 ай бұрын

All the way in to prevent the rd from falling off the smallest cog

Can you send me link for the shifter and the crank

Is it necessary to change the cable, or could i just change the derrailleur and hook it up to the already routed cable? Cheers

@TheBikeSauce

6 ай бұрын

I tried, but the gap between barrel and cable pinch bolt is longer on the RX822. If you happen to have a lot of extra cable hanging off your existing 812, it could work. I probably needed an extra inch of cable, so I just swapped inner cables.

@jonaslaugesen9332

6 ай бұрын

@@TheBikeSauce Alright, than you for the thorough answer!

On my mtb shifter xt 11s m 8000 r / Xt 12 m 8100 sgs / 11/ 51 11s m 5100 11s chain

can i use ultegra road shifters with this?

What brand/make options are there for an aluminium alloy flat bar gravel bike with 12 speed GRX? What's the total cost for cassette + dereilleur + chain? Any place where you can trade in old parts?

@dvoob

6 ай бұрын

Just run SLX/XT. The new GRX RD is pretty much a clone of the XT derailleur with a different pull ratio. Best setup for cost savings is running an SLX rear derailleur with an XT shifter.

@elachichai

6 ай бұрын

@@dvoob Sorry, new. Not familiar.

@Gregorius421

6 ай бұрын

A flat bar gravel is practically a rigid fork MTB, so you need an MTB groupset, like the XT.

Wolf Tooth tan pan no good?

Sadly doesn’t help with my di2, only option is still the garbaruk long cage.

@lechprotean

6 ай бұрын

Do you have the GRX812 RD? That officially works up to 42t and 46t is easy with B screw adjustment

I'm no expert, but having recently done the hack of swapping the shift ratio fin on my SRAM Force 1, 11-speed, rear derailleur (Mechanical), onto a SRAM X01 Eagle (12-speed), there was no need to limit the 12-speed rear derailleur into "thinking it's an 11-speed". The shifter is the brains, and determines how gears can be shifted, not the derailleur. Anyway, curious if anyone knows if this GRX RX822 SGS 12 is compatible in terms of pull ratio with Shimano (Dura-Ace, Ultra, 105 11-speed mechanical)? I was think of doing the Goat-link / Tanpan /XT 11-speed thing, but also curious if an XT 12-speed (52T) will work with just a Tanpan?

@TheBikeSauce

5 ай бұрын

You’re right, setting the high limit screw is just a best practice to prevent chain from falling off in the absence of chain tension.

@peteransel2715

5 ай бұрын

@@TheBikeSauce Great content. Looking forward to more of your excellent videos!

What limit screw did you adjust to kill off the 12th click?

@TheBikeSauce

6 ай бұрын

High limit

@ptrmrls

6 ай бұрын

Thanks!@@TheBikeSauce

Is this methode cheaper than another one?

So you're saying that 11-speed shimano shifters work with 12-speed shimano derailleurs ?

@TheBikeSauce

6 ай бұрын

These do 👍

Would you say this is smoother then the 25$ upgrade ? The 25$ version doesn’t work as smooth as I hoped it would

@ekskdks

2 ай бұрын

This is work to bring comfort when going uphill. It's the best solution than upgrading other parts, so don't worry and try it.