Re: Specialised Sirrus Rear Cassette Change - What To Do and How To Do It



J

JeffWills

Guest
On Mar 28, 7:09 pm, [email protected] wrote:
> Hi All,
>
> I've a trip coming up and I want to change my bike's road gear set-up
> to something more mountain. The bike itself is a 2004 model
> Specialised SIrrus A1. The current model has a Shimano HG50 8-speed
> 12-25t rear cassette. At the moment I can't be sure my model uses the
> same, but, assuming it does, what would one need to purchase to allow
> for more appropriate gearing. I'd like to do this simply and cheaply.
>
> Many thanks.
>
> Simon


Here's how:
http://www.parktool.com/repair/readhowto.asp?id=48
The tools needed are quite cheap and will last forever.

All Shimano cassettes since 1990 are removed in the same fashion. If
you change to a wider-range cassette, bear in mind that you may need a
rear derailleur with a longer cage and almost certainly need to add a
couple links to the chain.

Jeff