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New In Retail Box
FEATURES
Only compatible with ST-R9250, ST-R9270, ST-R8150, ST-R8170 Di2 12 Speed systems. It plugs into the second port of the Di2 levers.
Incompatible with the existing Di2 derailleurs or wire kits and can not be used in conjunction with TT shifters.
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FREE SHIPPING ON ORDERS OVER $199