This E-MTB specific chainring from SRAM has been designed to be used with a 104BCD spider and utilises SRAM s new T-Type design and is also backwards with Eagle technology (X-SYNC II). This chainring has been optimised by SRAM engineered to cope with high torque and high wear demands that e-bikes produce. With its aggressive tooth design it provides better chain retention that creates a smoother and more efficient pedal feel that designed to last longer.Speeds: 12104 BCD CompatibleSteel (34T,36T,38T)Backwards compatible with other Eagle TechnologyAeroGuard compatible with steel rings that Fulfils EN 15194:2017 standard