Race Face

Bosch G4 SX/CX Direct Mount Steel Chainring

What Our Gearhead® Experts Are Saying:

"This is a solid upgrade for high-mileage E-bike riders. The direct-mount interface is straightforward, and the chain retention is noticeably secure under load."

Modern full-power E-MTBs place significant torque and load on drivetrain components, requiring reinforced materials and precise chain management. The BOSCH G4 E-MTB Chainring is engineered specifically for Bosch Gen 4 and Gen 5 Performance Line CX and SX motor systems, integrating directly via a clean direct-mount interface.

Constructed from hardened steel, the ring delivers high stiffness and long-term wear resistance under sustained motor-assisted output. The narrow-wide SHI 12-speed compatible tooth profile improves chain engagement and retention, reducing the likelihood of derailment on rough terrain and high-torque climbs. For riders demanding reliable power transfer, consistent chain control, and durability that matches the output of full-assist systems, the BOSCH G4 E-MTB Chainring provides a purpose-built solution tailored to the realities of high-performance E-mountain biking.