Why change the cassete? It shall last a thousand miles more... mine is doing fine at 1400 km even though I have broken the chai twice.Tbh I do back off I'm only 85kg wet through but I'm 6ft 6 not really powerful and I don't use power that much normally use setting 3 I'm gona change cassette chain and jockey wheels see how we go?
Broke the same chain on first ride. Peeled apart just as you say..wore another out in 277 miles. I do not buy kmc chains anymore.Hi its a kmc ex10 chain it came with? Tbh the cassette is so cheap £24 I may as well do it my xc bike has 10 speed aswell so I'll use it there