Replacement top cap for BSD Acid Forks

It features a low profile

their quest to develop some of the toughest cranks on the market paid off after machine testing and riding testing proved them to be insanely strong

Box One™ Chain Tensioners are extruded then CNC-machined from 7075 aluminum for an optimal balance of strength and weight

50mm reach

Box One BMX Race Disc Brake Adapter (Sliding Dropout) - Black supplier_55074282209606 Replacement top cap for BSDThe Box Disc Brake Adapter is designed to help improve braking control on frames where disc brakes were not standard. Compatible with 2 types of dropouts and 3 10mm hubs, in the right configurations, the Box Disc Brake Adapter goes over your hubs axle and mates with the frames dropout, allowing mounting of a standard post mount disc brake caliper.