ROTOR utilizes a special manufacturing process, named the “Trinity Drilling System. An extruded aluminum bar is intricately CNC machined with three drilled holes through the length of the crank. The result is a unique triple hollow crank arm that enables Rotor’s engineers to remove the excess aluminum in the core while still maintaining the structural strength of the crank. Comes together with the original bottom bracket and chainring.
- 100% CNC, machined, T6-7075
- For all 144 BCD 1/8th and 3/32nd, oval & round chainring
- 165mm Crankarm Length
- Ultra-stiff steel 24 mm UBB axle compatible with BSA
- BB weight 114g
Package includes Bottom Bracket, Crankarm, 49T Chainring, and Chainring Bolts.
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