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Aeffect R e-MTB Crankarms

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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.

Become the Machine

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

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. 

Aeffect R e-MTB Crankarms

Regular price $99.99

Unit price per 

Color Black

Arm Length (MM) 160

Rider Style

All Mountain


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)

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