Replacing broken upper jockey wheel....
My SRAM X9 10spd upper jockey wheel is broken.
Can I use a old 9spd. SRAM or XT jockey wheel?
I'm pretty sure Shimano uses a different number of teeth. No reason to think the inside diameters are the same.
Depends how old the X9 jockey wheel is. They changed in 2010. 9 speed and 10 speed are the same.
9 speed 11.7515.038.000 10-11 X9 X7 Rear Derailleur Pulley Kit
10 Speed 11.7515.038.000 10-11 X9 X7 Rear Derailleur Pulley Kit
As long as they didn't change the diameter of the bolt hole or overall thickness of the jockey by much (which you will be able to check by comparison). I am pretty sure you could at least use an older one as a temporary fix while you order up some replacements which are pretty cheap. After all the internal spacing and link lengths of the chains are the same regardless of 9/10 - SRAM / Shimano etc
Jockeys are not under full load so I am sure you won't damage anything by trying. If the diameter is slightly different you may have to tweak the b screw a bit (or try the lower jockey in the upper position and put the non standard jockey in the lower position) if it doesn't work nothing lost but I am pretty sure it will be OK.
SRAM jockey wheels are not cheap. I broke a bottom pulley and was seriously considering buying a new X7 derailleur as a spare to steal the parts off because it wasn't much more money than just the pulleys. They were around $35.
Originally Posted by SimpleJon
The older pulleys are a completely different design with two holes and a bolt and pin to mount.
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