Fit Bike Sizing Cranks



  • Industry standard fit bike sizing cranks in three sizes
  • Precision CNC machines anodized aluminum
  • Standard version adjustable from 155mm to 185mm
  • Easy to adjust – utilizes a sturdy locking rail system with easy to view measurements
  • Designed for square taper bottom bracket & 130mm double chain ring
  • Available in a Shorter Version 140-170mm & Extended Version 185-215mm
  • Purely Custom offers optional custom branding with your company/dealer logo

Out of stock


These Fit Bike Sizing Cranks are the industry gold standard

Purely Custom’s Sizing Cranks have become an industry standard for fit bike sizing cranks. They are durable CNC machined aluminum, easily adjustable and readable with embedded level on each crank arm. These cranks are even rideable when used on a client’s own bicycle. Purely Custom offers these sizing cranks in two sizes: Our Short Version adjusts from 140-170mm, our Standard Version measures 155-185mm. Be sure to select the size of cranks you would like upon ordering.

Additional information

Crank Version

Extended Version 185-215MM, Shorter Version 140-170MM, Standard Version 155-185MM


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