Cannondale Rear Derailleur Hanger Hex Back Single Lead F-Si Synapse M12x1 K33040The Cannondale Rear Derailleur Hanger Hex Back Single Lead F-Si Synapse M12x1 K33040 is a perfect replacement when you need it. Fits 2020 generation F-Si Carbon, 2022 generation Synapse Carbon, and other frames. Fits 12mm x 1 single-lead axles. The Kit includes one hanger and one mounting bolt. Please call Cannondale with compatibility questions.884603797181
