The Box One Oversized M30-M Crankset 150mm Black is designed to maximise power transfer with a stiff, efficient pedalling feel. Its hollow-forged arms and large 30mm spindle reduce flex at the bottom bracket, so more of your pedal effort translates to forward motion. Built from durable 7075 T-6 aluminium and finished with anodised graphics, it delivers reliable performance for competitive riding while keeping weight in check.