e*spec Bosch CX Gen 4 Steel Chainring

e*thirteen direct mount e*spec chainrings use their M3 narrow-wide tooth profile, which reduces weight without sacrificing chain-retention. Steel direct mount rings provide great performance and long life at a killer price for todays high-performance e-bikes.

• Compatible with 11 and 12-Speed Drivetrain Systems
• 52mm or 53mm Boost chainline