Race Face

BOSCH G4 e-MTB Chainring – Direct Mount Shimano 12-Speed

Race Face BOSCH G4 e-MTB Chainring – Direct Mount Shimano 12-Speed
The Race Face BOSCH G4 e-MTB Chainring is a rugged, direct-mount chainring designed for Bosch Gen4 Performance Line CX e-MTBs with 12-speed Shimano drivetrains. Made from durable steel with a narrow-wide tooth profile compatible with SHI-12 chains, it delivers secure chain retention and reliable performance across rough terrain. 

Available in multiple configurations to suit your ride and motor setup:

• 34T / 52 mm – easier climbing and responsive acceleration
• 36T / 52 mm – balanced performance
• 34T / 55 mm – improved chainline stability
• 36T / 55 mm – higher top-end speed and torque transfer

Built tough for e-MTB torque demands, it keeps your Bosch-powered bike running smooth and dependable on every trail.

Compatibility:

• Bosch Gen4 Performance Line CX motors
• Shimano 12-speed drivetrains (SHI-12 chain spec)

Mounting Standard:

• Direct Mount – Bosch G4 interface
• Tooth Profile: Narrow-Wide (SHI-12) – improved chain retention, reduced derailment risk. Optimized for e-MTB high-torque loads

Materials:

• High-strength steel construction
• Corrosion-resistant surface finish

Intended Use:

e-MTB, trail, all-mountain, enduro

Key Benefits:

Robust steel design handles e-MTB torque

Narrow-wide profile keeps the chain stable even on rough terrain

Multiple chainline options for perfect drivetrain alignment

Smooth, precise power transfer for Bosch-powered bikes