The Wolf Tooth 107 BCD Chainring for SRAM cranks is compatible with most new SRAM 1x road cranks that use the 107 BCD spider, including the SRAM AXS Power Meter Spider. This chainring uses the patented Wolf Tooth Drop-Stop B Wide/Narrow tooth profile that is optimized for drop bar bikes and designed best wear life, mud clearance and chain retention. Drop-Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrains Compatible with all 10-, 11-, and 12-speed chains, with the exception of Shimano 12-speed chains Shimano 12-speed chains require the use of Wolf Tooth's Shimano 12-speed specific chainrings Fits 107 BCD spiders Made from 7075-T6 aluminum for long life Wolf Tooth 107 BCD Chainring - 40t, Compatible with SRAM 107 BCD, Drop-Stop B, 4-Bolt, Black Round or Oval: Round Material: Aluminum Color: Black Tooth Count: 40 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Defined Color: Black Chainring BCD: 107 Wolf Tooth 107 BCD Chainring - 38t, Compatible with SRAM 107 BCD, Drop-Stop B, 4-Bolt, Black Round or Oval: Round Material: Aluminum Color: Black Tooth Count: 38 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Defined Color: Black Chainring BCD: 107 Wolf Tooth 107 BCD Chainring - 44t, Compatible with SRAM 107 BCD, Drop-Stop B, 4-Bolt, Black Round or Oval: Round Material: Aluminum Color: Black Tooth Count: 44 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Defined Color: Black Chainring BCD: 107
