Take on the toughest terrain and upgrade your e-bike drivetrain with our e*spec Direct Mount Chainrings.Our M3 narrow-wide tooth profile reduces weight without compromising on chain-retention. Our premium aluminum rings provide cleaner aesthetics, lighter weight, and long-lasting performance. Take on the elements with confidence and power up your drivetrain now!Specification:Chainline: Brose S Mag 53mm, Shimano 53mm (Boost), Bosch CX Gen4 Motor - Steel: 52mm, Aluminum: 53mm (Boost chainline)Compatibility:Brose S MagShimano EP8/E8000/E7000 Bosch CX Gen4 MotorMaterial: 7050 AluminumMount: QuickConnectTMWeight:Brose34T: 126g36T: 158g38T: 193gShimano32T: 137g34T: 140g36T: 160gg38T: 196gBosch CX Gen4 MotorAluminum:34T: 123g36T: 155g38T: 188g