GX to Xtr

westonpark

Evening,

I’m going to swap out my GX rear mech and shifter for XTR M9000. I’ve got a 32t chain ring and SRAM 10-42 cassette, will the xtr rear mech work on that set up or do I need to change the cassette?

Different websites are saying different things.

Thanks

Mike

mattyfez

Should work fine if you change the mech and shifter as long as it's the same number of gears.

Expensive swap though for what's more of a side grade rather than a big upgrade...

westonpark

Rear Mech and shifter will be changed and both are 11 speed.

Typo in my message, in that I’m swapping it out. To be honest I’m struggling to install it correctly. So I must be installing it wrong.

Got the rear mech and shifter for next to nothing.

billycool

I've gone the other way and kept my GX shifter and rear mech and put in an XT cassette and chain. Works perfectly well.

General rule of thumb as explained to me was same brand and speed shifter/mech and same cassette/chain.

What problems are you having? The SRAM cassette needs an XD driver and the Shimano will need a Shimano one.

westonpark

It’s gear set up which is the issue. Struggling to get the gear to go onto the lowest gear.

I’m not sure if the GS version can deal with the 42t cog on the cassette.

westonpark

Below is from the shimano website,

I’m running 1x11 which is say a maximum low cog of 46, I’m at 42 so that’s ok. Min is 40.

What is maximum front difference and max capacity?

Do I have a top sprocket issue if I’m at 10t?

Wiggle and Evans website say max low cog is 40.

Confused.com or what?!?!





PRODUCT SPECIFICATIONS

MODEL NO RD-M9000-GS
SERIES SHIMANO XTR M9000 Series
Color Series color, -
Average weight 221 g
Remarks *w/o bracket spec available
B-Axle_Hollow axle X
Compatible chain HG-X 11-speed
Direct attachment (Conventional) X
Direct mount compatible X*
Fluoric coated link bushings 4
Low sprocket_Max. 42T(2x11-speed) 46T(1x11-speed)
Low sprocket_Min. 40T
Max. front difference 10T
Pulley_G pulley bearing Sealed Bearing
Pulley_Sunken type pulley bolt X
Pulley_Teeth 11T
Pulley_T pulley bearing Sealed Bearing
Pulley cage GS
Rear speeds 11
Top-Normal spring type_SHADOW RD+ X
Top-Normal Spring Type SHADOW RD+
Top sprocket_Max. 11T
Top sprocket_Min. 11T
Total capacity 37T

westonpark

I can now confirm that the set up does work!! It needed a new chain since the xtr cage is longer than the sram but it's a really impressive set up!!

swod1

Westonpark wrote:

I can now confirm that the set up does work!! It needed a new chain since the xtr cage is longer than the sram but it's a really impressive set up!!

Xtr is lovely once its setup, nice and crisp shifting.

I've got it in 10spd on my hardtail bike with a cheaper hg500 11-42t cassette and kmc chain works great.

I'm not sure what all the fuss is about with sram gears.