Race Face Bosch G4 Direct Mount Hyperglide+ e MTB Chainring The Race Face Bosch Gen4 Hyperglide+ steel chainring mounts directly to Bosch Gen 4 Performance Line CX E-bike motors, offering a minimalist look and long-wearing performance. Features Only compatible with Hyperglide + chains and Bosch Gen 4 Performance Line CX motor Designed for use with 12-speed Shimano drivetrains Narrow Wide tooth profiling ensures consistent chain retention Steel SPECIFICATIONSDirect Mount Type Direct Mount Bosch Gen 4Designed for ebike Yes Drivetrain Speeds12Chainring BCDDirect Mount Bosch Variant and MFG#34t 52 Chainline Steel Shimano 12-speed HG+ Black21BG4DM5234TSHI12BLK34t 55 Chainline Steel Shimano 12-speed HG+ Black21BG4DM5534TSHI12BLK36t 52 Chainline Steel Shimano 12-speed HG+ Black21BG4DM5236TSHI12BLK36t 55 Chainline Steel Shimano 12-speed HG+ Black21BG4DM5536TSHI12BLK | Race Face | Raceface Bosch G4 Direct Mount Hyperglide+ Emtb Chainring 36T 55 Chainline Steel Shimano 12-Speed Hg+ Black | Aluminum