Box One M30-M BMX Race Cranks Crank Arm Length:155mm Rider Weight Limit: None

Rider Weight Limit: None

heavy-duty tote-bag (included)

Also included for your hard earned money is:

- Weight: 32 oz

Factory installed half-link for a radically stronger set-up

Box One M30-M BMX Race Cranks Crank Arm Length:155mm Rider Weight Limit: NoneThe Box One M30 M Cranks, as with most of Boxs higher end offerings, follows in the Oversized Technology design philosophy. In designing these products, Box moves material from less stressed areas to areas of higher stress, thereby achieving greater stiffness without adding any extra weight. The result of all this is that you will have a more instant response when pedaling. More efficient power delivery is the goal and Box has really achieved it with