e*thirteen e*spec Aluminum Chainring Bosch CX Gen 4

Upgrade your e-bike drivetrain with our Bosch e*spec Direct Mount Chainrings.

Our M3 narrow-wide tooth profile reduces weight without compromising on chain retention. While the steel version is a direct OEM replacement, the premium aluminum versions provide cleaner aesthetics, lighter weight, and long-lasting performance perfect for when you're ready to upgrade from your original ring.

Conquer your e-bike trails at a great price—power up your drivetrain now!

- Direct Mount chainring for Bosch and Shimano E-Bike fitment
- Updated M3 narrow-wide tooth profile eliminates chain noise and decreases overall system wear while retaining chain
- 11/12 speed. Compatible with both Shimano and SRAM 12 speed drivetrains