The Substance XL crank features heat treated 4130 chromoly arms with a rectangular cross section for increased stiffness and grindability.
The 24mm diameter spindle is stiffer and stronger but being hollow, does not add any extra weight to the cranks.
The new flush boss design eliminates sharp edges around the ankles.
BSD SWERVE X AERO RIM PRO REAR WHEEL
BSD SWERVE X AERO RIM PRO FRONT WHEEL
BSD SWERVE X NASA PRO FRONT WHEEL
BSD SWERVE X NASA PRO REAR WHEEL