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BULLSEYE RACEWORKS PRO-DRIVE CHAINRING. Precision built in the USA from 1/2" ALCOA Aluminum Alloy. 5-BOLT pattern. Optimized milling and extensive CNC machining for weight reduction and torsional strength. Threaded, raised chainring bolt holes for precision mounting and alignment. Machined to strict aerospace tolerances. Size: 39T. Untested.
| Category | Sports & outdoors > Outdoors > Biking Equipment |
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