Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the September Giveaway for Vvolt Sirius E-bike valued at $2999

Shimano GRX shifter with 11-speed mountain derailleur
Hey all,

My CX/Gravel bike came with a Shimano GRX-810 (1x) drivetrain. The derailleur has a 34T max cog and, living in a flatter area, it's more than fine but I'm planning on getting in some climbing-heavy gravel rides later this year so was looking to get something that can take more teeth in the rear. A little digging around has identified the XTR-M9000GS, another 11-speed RD, as a viable option but am unsure if a road shifter will be compatible with the mountain derailleur due to cable pull, etc.

Logic, to me, would dictate that they are cross compatible as both are 11-speed systems. Would my best bet be to keep digging for the long-cage GRX derailleur or would the XTR suffice?
Thanks in advance!
11 Speed are said to be compatible.

10 Speed Dynasys is said to be not compatible, but I matched it to a Dura Ace 10 speed and the only reason I got skipped gears was because I installed a low spacer on the cassette. The hub is an old Altus, with an 8-10 Speed freehub body. I totally forgot that the low spacer is only for installing 9/10 speed cassettes on an 11 speed freehub body.

Possibly Related Threads...

Forum Jump:

10 Latest Posts
Please allow me to introduce myself
Today 02:21 AM
What are your best biking places in your...
10-03-2022 10:00 PM
650B vs 650C which one is perfect for mo...
10-03-2022 09:54 PM
Schwinn Le Tour sagging chain
10-03-2022 09:06 PM
What was your first bicycle?
10-03-2022 08:21 AM
bike riding is a fun! isn't it ???
10-01-2022 02:16 PM
Campagnolo Freehub Lockrings
10-01-2022 05:13 AM
Biking and running apps
09-30-2022 08:27 PM
09-30-2022 08:20 PM
Campy 10 speed cassettes
09-30-2022 09:53 AM

Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

Top 5 Posters This Month
no avatar 1. Jesper
22 posts
no avatar 2. ichitan
15 posts
no avatar 3. ReapThaWhirlwind
6 posts
no avatar 4. jasmin122
4 posts
no avatar 5. Joseph Williams
3 posts