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

5mm added to the chainline provides wider tire clearance

Item Specifications keyword search EW-RS910

Wire latch holds handles together when not in use

Front kangaroo pocket with 2 zippers

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