Wolf Tooth 107 BCD Chainring for SRAM 40T

Wide/Narrow for SRAM 107 BCD Spider. Wolf Tooth patented chainring. Optimized for drop bar bikes. The wide side of the teeth has maximum contact on the drive side, distributing the load and extending the life of the chainring. The narrow side allows for mud and debris clearance and reduces friction. The alternating wide/narrow tooth pattern helps prevent chain drop. Compatible chains: 9-10-11spd or 12spd SRAM Eagle, SRAM Flattop, Campagnolo, KMC, Connex, or Wippermann chains Drop-Stop B Weight: 79g Material: 7075-T6 aluminum Compatibility: SRAM 107BCD spider (not compatible with PM-RED-D1 / PM-RED-1-D1 / FC-RED-D1 / FC-FRC-1W-D1 / FC-FRC-W-D1 / PM-RIV-W-D1 / PM-RIV-1W-D1 / FC-RIV-W-D1 / FC-RIV-1W-D1 / PM-RIV-D1 / FC-RIV- D1)