Box Components Box One B52 Bottom Bracket

Box Components Five Square Taper Crankset

Featuring a JIS square taper standard, oversized bottom bracket interface, which showcases a step-down shape specific to the crank arm-length meeting at the pedal boss. Unlike alternative options, no two lengths are the same. These durable cold-forged cranksets are available in sizes from 135mm through 170mm and employ a 5-bolt 110 BCD chainring pattern. All JIS square taper standard cranks are compatible with all BSA European-style square taper bottom brackets  

Box Components Two Square-Taper Chromoly Bottom Bracket

Box Two™ Square Taper Chromoly Bottom Brackets are the best option for young BMX racers and other users of three-piece cranks in search of an affordable, high-performance square taper bottom bracket. Each bottom bracket is hand-assembled with a Chromoly spindle, sealed bearings, forged and CNC-machined alloy cups, and a composite centre spacer/seal.