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The Bullseye Raceworks Pro-Drive chainring is precision built in the USA from 1/2" Alcoa Aluminum alloy. 4x104mm bolt pattern with optimized milling and extensive CNC machining around the perimeter to help save weight and add torsional strength when Pro-Level torque is applied. Threaded, Raised chainring bolt holes for precision mounting and alignment. Machined to strict Aerospace tolerances for Zero run-out and True fit. 

Raceworks Pro-Drive Chainring