Microspline kits also include 1x drive side end cap

Super light

They are all cross compatible

These are the 37

Praxis eRing Steel 4 Bolt Chainring - Four Bolt - 104 BCD - Standard Crank Chainline - Round - 36T - 10-12 Speed - Steel Replace Images Microspline kits also include 1xDesigned specifically for e Bikes and longer wear, Praxis's steel e Rings are cold forged from 4130 high grade steel with a nice black oxide finish. Licensed and developed in conjunction with Mountain Racing Products, the Wave pattern tooth profile applies alternating lateral force to each chain link to actively retain the chain to the ring going beyond narrow wide implementations that rely solely on friction, while allowing room for mud, debris, and