Stupid question but before I go off and start chaining stuff, my current cassette is a 12/25 which needs replacing I have an 11/25 kicking about would I need to shorten the changing if I made the change?
No.
If the largest chainring and the largest rear sprocket remain the same, then the length of chain needed is unchanged.
@Scilly.Suffolk started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Stupid question but before I go off and start chaining stuff, my current cassette is a 12/25 which needs replacing I have an 11/25 kicking about would I need to shorten the changing if I made the change?