Box Three Hollow Crankset-Black Crank Arm Length:177.5mm Toray carbon fiber legs

Toray carbon fiber legs

Chainring Compatibility: Designed for use with a single chainring setup

The knurled pattern provides a comfortable and efficient grip while maintaining a super-narrow racing profile and the Lock-On Grip System means you get zero slippage

Built in return spring

Box Three Hollow Crankset-Black Crank Arm Length:177.5mm Toray carbon fiber legsThe Box Three Crankset features a hollow forged 2 piece design with an oversized bottom bracket interface. The 24mm spindle is pressed into the drive side crank arm for durability and easy installation. The non drive side crank arm features a 2 bolt pinch system for added strength. Our unique 4 bolt 104 BCD spider features a flex resistant ring for optimum performance. Box Three Cranks feature steel pedal inserts that require pedal washers and