SRAM Chain Ring T-Type 104 Bcd Steel 2023 Black 36TSRAM: Designed for use with a 104 BCD interface of any 104 BCD spider This chainring utilizes our T-TYPE design and is backwards compatible with EAGLE technology (X-SYNC II). SRAM drivetrain engineers optimized this ring to combat the high-torque high-wear situations e-bike riders face. The aggressive tooth design provides better chain retention for a smoother more efficient pedal feel with a focus on long wear-life.FEATURES104 BCD Compatible.Steel (34T36T38T).Backwards compatible with other Eagle Technology.AeroGuard compatible with steel rings that Fufills EN 15194:2017 standard SPECIFICATIONSChainring Size: 34T 36T 38TBolt Circle Diameter (BCD): 104 BCDSpeeds: 12Compat - Yaw: n/aMaterial (Chainring): SteelColor (Chainring): Black