The Box Two Square Taper Chromoly Bottom Brackets is 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 center spacer/seal.

Spindle Type: JIS
Spindle Material: Chromoly
Spindle Length: 108mm
Shell Width: 68mm
Thread: 1.37″ x 24 TPI