I have two KMC X10 SL chains that I never ended up using. I got my new bike, which came with a KMC X11 chain (the bike is Specialized Diverge Comp). I am wondering if I can use the X10 chain on this bike?
They will not work at all. Use an 11-speed chain.
If you use the 10spd chain, there is a good chance that it can:
- Jam in the rear derailleur jockey wheels
- Increase the friction on the cassette, which will:
- Increase wear on the chain's side plates, dramatically increasing the chances that the chain will break right in the middle of you hammering up a hill.
- It will also shift quite poorly.