Originally Posted by
L Boogie
My mountain bike is a 9 speed (650b) and I bought a spare wheel set that came off a bike that's the same model but a year newer and it's a 10 speed. I'm assuming I can install break rotors and a 9 speed cassette just like the ones on my factory wheels and it will work??
If the hub is designed for disc brakes, then you should be fine.