Box components Box One M30-M 150mm Euro crankset black Model-GXP Gives you optimum hold and

Gives you optimum hold and heel fit inside the boot

P Zero SmarTube is the most advanced inner tube in the range

Made to be used with Wolf Tooth Seatpost Clamps

Hinged clamp reduces weight and improves ergonomics

Improved radial compliance for better traction over bumps & chatter while reducing negative feedback to the rider gives enhanced performance & comfort

Box components Box One M30-M 150mm Euro crankset black Model-GXP Gives you optimum hold andFeaturing beefy hollow forged crank arms and a massive 30 millimeter Praxis M 30 spindle cold forged from 7075 aluminum and precision ground to extremely tight tolerances the Box One M30 M Crankset is the absolute stiffest junior BMX crankset available today. A precision CNC machined chromoly alloy self extracting crank bolt system makes installation and removal a snap. Includes Praxis External BSA Bottom Bracket and M30 installation tool TECH SPECS