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Race Face Aeffect R 137mm MTB Crank Arms


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Average connection time 25 secs

Average connection time 25 secs

Designed in Canada, the rally-rated Æffect R crankset brings enduro rated strength but keeps the weight in the XC range. Its forged 7050 AL construction optimizes stiffness without added weight. The Æffect R features our versatile CINCH System for plenty of spider options as well as our trusted 24mm EXI interface spindle. In addition to our 170 and 175mm lengths, we've added in a 165mm length, making it a solid crankset choice for today's hard charging trail rider.


  • Deep pocket net forged from 7050 AL for superior stiffness.
  • 24mm EXI spindle.
  • New 165mm length.
  • Can run Alloy or Steel Cinch DM Rings.
  • CINCH spider interface.
  • Black satin finish.
  • Crank Arms Only - Chainrings purchased separately 


  • Built For: XC / Trail / All Mountain / Enduro / Fat Bike.
  • Spindle Size: 24mm - 5 Lengths Available.
  • Weight: 632g (32T DM Alloy, W/O BB).
  • BB Compatibility: BSA, BB92, PF30.
  • Size: 165, 170, 175mm.
  • 137mm Spindle
  • MTB
  • Race Face

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