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The SD Pro Hollow Bb 4-hole is a high-end crankset designed for riders who are serious about BMX racing. It offers great stiffness combined with a low weight thanks to the hollow crank arms.
- 24mm axle diameter
- 104mm BCD diameter
- 111mm axle length
- 855 grams (170mm)
- Includes a OB Euro bottom bracket
- Finish: matte black