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BSD Substance XL Cranks

New for 2017 are the Substance XL cranks, a single bolt design 2.5pc crank with hefty 24mm XL spindle and an all new flush boss design eliminating sharp edges around the ankles.  

  • Heat treated 4130 XL 24mm diameter CNC machined 48 spline hollow spindle.
  • Heat treated 4130 chromoly arms with rectangular cross section for increased stiffness and grindability.
  • RHD / LHD compatible.