Home Chat General Chat

Conversion to 9 speed

RobRob Posts: 209
Hi, I have an off the shelf Specialized Allez with 8 speed rear cassette. I have Sora 8 speed shifters. The rear derailleur is 9 speed Tiagra. What's to stop me smacking a 9 speed cassette on in place of the 8 speed? Or am I going to need to change the chain/front mech/chainset/shifters? I don't know exactly how the shifters work but they aren't indexed they shouldn't be a problem should they? I realise a narrower chain might have to be fitted, but then how would that affect the front chainset?

Comments

  • jazdogjazdog Posts: 223
    Hi Rob



    I changed up to an 8 speed from a 6 on an old racing bike - the narrow chain worked fine on the triple chainset and I didn't need to replace the front mech. I had to change the shifters but that was more because the old ones were rusting and grotty. If they are not indexed you might be ok.



    Jaz
Sign In or Register to comment.