Originally Posted by
BigPoser
Getting GRX for my gravel build and want to put an 11-46 cassette on it. Thinking that an adjustment of the B screw would allow it.
I can't find anything that shows if it's possible.
Anyone know first hand if it will work? My other option would be to use an XT rear mech.
Thanks in advance.
Brandon
Originally Posted by
Marcus_Ti
Nope, per official numbers The 1X11 GRX RDs top at at 11-42, officially. The 2x11 top out at 11-34.
https://www.coloradocyclist.com/shim...ear-derailleur
Features
- For use with single ring crankset, 11-speed
- Weight: 264 grams
- Adjustable chain stabilizer prevents chain slapping and drops
- Toggle clutch ON/OFF to match the terrain
- Switch stabilizer ON/OFF to match the terrain
- Gravel-tuned clutch tension
- Total capacity: 31T
- Low sprocket: Maximum 42T/Minimum 40T
- Top sprocket: Maximum 11T/Minimum 11T
- Cassette Size: 11-40t to 11-42t
The gravel/cyclocross forum may he a better place to ask this. Someone there may already be running the same thing.
But, it's well known that Shimano is conservative with its max cog capacity of their rear derailleurs. Most likely it will work fine with some b-screw adjustment.
I'm contemplating a similar set up for my gravel bike. Please report back with how it works out for you.