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Race Face Aeffect R E-Bike Crank Arms


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The Race Face Aeffect R E-Bike Crank Arms are purpose-built for Bosch Gen4 drive system for seamless motor integration. One of the lightest E-Bike Cranks!

While they are designed for rowdy, power-down riding, the 485g weight puts them among the lightest alloy eMTB cranks on the market.

Ground Control! Dial in your fit with the 165mm crank, 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
  • Crank Arm Length: 165mm
  • Includes: Pedal Washers (Chain Rings & Bottom Brackets sold separately)
  • Crank Arm Material: 7050 Aluminium
  • Weight (165mm): 485grams (arms only)

Race Face E-Bike Crank Installation Guide

Race Face Lifetime Warranty

Race Face Lifetime Warranty

Be sure to check out this great RF accessory: Race Face Stash Tool Wrap

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