Shifters don’t actually need replacing all that often. There are two circumstances that demand replacement, however. If they break, chances are you’ll need new ones. There’s a lot of bits inside a RapidFire unit and trying to repair one is liable to drive you insane. GripShift units are mechanically simpler, but most of the things that can break are substantial enough that it’s easier to replace the whole thing. The other reason to change shifters is if you’re increasing your gear count. You need the same number of clicks in your shifter as sprockets on your cassette…

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