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Race Face AEffect-R Ebike Crank Arms Only



Smooth-pedaling ergonomics with an extra-burly eMTB build.Aeffect R e-Optimized Bosch G4 –Trail / All-Mtn / Enduro / eMTB.


  • Purpose-built for Bosch Gen4 drive system for seamless motor integration.
  • Optimised 180mm Q-Factor maintains motor and frame clearance while delivering pedaling ergonomics and feel of regular Race Face mountain bike cranks.
  • 160/165/170mm crank lengths that are trimmed to length for improved ground clearance on shorter sizes.
  • 444g arm weight among lightest alloy eMTB cranks helps reduce overall bike weight.
  • Pair with Steel DM Bosch G4 Ring for perfect integrated styling.

Occasionally, without notice, manufacturers change product design and/or specifications.


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