e*thirteen e*spec Steel Direct Mount Chainring - 36T Bosch CX Gen4 CL 53/55 via Spacer Black. New e*spec Steel Direct Mount Bosch CX Gen4 Chainrings feature 53/55mm adjustable chainline with included spacer. They utilize e*thirteens M3 narrow-wide tooth pr
e*thirteen e*spec Steel Direct Mount Chainring – 36T Bosch CX Gen4 CL 53/55 via Spacer Black. New e*spec Steel Direct Mount Bosch CX Gen4 Chainrings feature 53/55mm adjustable chainline with included spacer. They utilize e*thirteens M3 narrow-wide tooth profile which reduces weight and minimizes system wear and noise without sacrificing chain retention. Steel rings provide great performance and long wear-life at an affordable price.
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