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.
*** Bullseye DNA Spider and Bullseye PRO BOLT chainring bolts shown for display purposes.