Race Face Aeffect R Black E-MTB Crankset

Smooth-pedaling ergonomics in an extra-burly eMTB build.
Our Aeffect R eMTB cranks bring the burly, purpose-driven design of Aeffect R to the Bosch Gen4 drive system. While they are designed for rowdy, power-down riding, the 444g weight puts them among the lightest alloy eMTB cranks on the market. Pair with a Steel DM Bosch G4 ring for the perfect integrated styling.

Become the Machine
Purpose-built for Bosch Gen4 drive system for seamless motor integration.

Ground Control
Dial in your fit with 160, 165 and 170 crank lengths, trimmed to length for improved rock and roots clearance on shorter sizes.

• Crank Compatibility: Optimized for Bosch Gen 4, Compatible but not optimized for Bosch Gen 2
• Available Arm Lengths: 165mm, 170mm, 175mm
• Includes: Pedal Washers (Chain Rings & Bottom Brackets sold separately)
• Crank Arm Material: 7050 Aluminum
• Weight: 485g
• Weight Conditions: 165mm Arms Only (E-Bike Cranks)