e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t, 11/12-Speed, 107BCD, Black shifter-flat-barright Item Specifications BB Shell Width

Item Specifications BB Shell Width (mm) 85 BB/Frame Interface T47 Bottom Bracket Shell I

Designed to suit the female form

Front kangaroo pocket with 2 zippers

1 Brake Fluid Disc Brake Fluid UPC: 844171072868

Updated compression ring design further enhances "carbon friendly" uses by evenly distributing clamping forces on the steerer

e*thirteen Helix R 107 BCD 4-Bolt Chainring - 40t, 11/12-Speed, 107BCD, Black shifter-flat-barright Item Specifications BB Shell WidthThe e*thirteen Helix Race 107 BCD Chainring, designed for 4 bolt 107 BCD cranks like SRAM Red or Force including power meter equipped cranks, offers a performance upgrade for Gravel and Road cyclists. The 38, 40, and 42 tooth rings pair perfectly with e*thirteen's cassettes for more overall range and higher top speeds. Made from durable premium 7075 alloy, they're CNC sculpted for a high stiffness to weight ratio. Compatible with both SRAM and Shimano