Is Shimano 9 speed jockey wheels OK with eight speed drivetrain.
I need a medium cage RD for a compact MTB crankset and ebay has the many more medium caged nine speed derailleurs. Will the 9sp jockey wheels work OK with eight speed chains?
Yes, no problem. I ran a 9-speed Ultegra rear derailleur with an otherwise all-8-speed drivetrain with no difficulty at all.
Originally Posted by HillRider
It might depend on your chain, but if you get any rubbing you can easily cure it with some thin washers.