e*thirteen Helix Race e*spec - Direct Mount Chainring - Bosch - 13mm Offset - bronze

The Helix Race e*spec chainrings combine state-of-the-art design and performance. They are made from 7075 aluminium and impress with their light weight, optimized durability, high rigidity and appealing aesthetics. Features of the e*thirteen Helix Race e*spec Direct Mount made from 7075 aluminum for Bosch Gen4 CX / Performance Line SX drive units Narrow-Wide profile for improved chain retention 13mm offset for 53mm chainlines compatible with Shimano, SRAM & TRP 11/12-speed drivetrains