Are Campagnolo 11s and 12s left arms compatible?
Moderator: robbosmans
I have a Stages 11 speed Campagnolo left. I'm wondering if I ever upgraded to 12 speed whether the left crankarms are dimensionally compatible and would work together.
Unfortunately no, Campagnolo 11spd and 12spd crank arms are not interchangeable. On 11spd cranks, the crank bolt passes through the right crank and screws into the left crank; on 12spd cranks, the bolt passes through the left crank and screws into the right crank.
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