Box Three BMX Race Disc Brake Caliper - Black supplier_20040430878831 A Mid bottom bracket is

A Mid bottom bracket is included with the Metron Cranks so you've got all you need to get back out there

utilising a newly designed cassette TCS (Toothed Coupling System) mechanism

WHEEL SIZE: 22"

The BTM also has an integrated headset

Profile Front: Fits Profile Mini front hubs

Box Three BMX Race Disc Brake Caliper - Black supplier_20040430878831 A Mid bottom bracket isThe Box Three BMX Disc Brake Caliper is here! With an IS style mounting interface made of carbon steel, this disc brake caliper is all you need to improve control. Weighing only 130 grams, this lightweight gadget will spring you smoothly through every turn. All you need to do is focus on the finish line.