SRAM Eagle Transmission E-MTB Chain Ring 94 / 104 BCDSRAM EAGLE TRANSMISSION E MTB CHAIN RING 94 104 BCD Designed for use with a 94 or 104 BCD interface of any 94 or 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