Forum home Mountain biking forum MTB workshop & tech

new chain

antcarantcar Posts: 2
edited September 2017 in MTB workshop & tech
hi having chain trouble fitted a new chain to my bike a KMC X8-93 to replace a KMC Z51 but new chain slips in high gears under load I have fitted a new rear derailleur and this works fine when I use old chain it works ok . could this be that the sprocket has worn and old chain is more suited to it. bike is a Dawes Tamarack dx with Shimano chain ring and 8 speed cassette :?:


  • cooldadcooldad Posts: 32,601
    Probably the cassette is worn. Or maybe just badly indexed.
    I don't do smileys.

    There is no secret ingredient - Kung Fu Panda

    London Calling on Facebook

  • JGTRJGTR Posts: 1,404
    If the chain rides up the cassette teeth when you push down hard on the pedals with the bike stationary then the cassette is worn.

    But I'd still fit a new cassette
Sign In or Register to comment.