Wednesday, February 27, 2008

Q&A: 25- to 27-tooth cassette

Q: Hi Jim,
I want to change my cassette from 11-25 to 12-27. I bought a new 10-speed cassette but I wondered if I need to change the length of the chain with the bigger rear cassette?


A: Thanks for the email, Leon. Unless you have something unusual in the way of a crankset or rear derailleur, that should work fine without changing the chain length. I ride a standard 39/53 Shimano Dura-Ace 10-sp drivetrain and have 2 wheels equipped with those same cassettes and I switch back and forth all the time and it works just fine.

Good rides!

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