Profile External (Outboard) Euro Bottom Bracket

Made to work with most BMX bikes using an American bottom bracket shell and a 1pc. crank.  24t

PC cones with aluminum centers for strength. Available in 19 or 22 mm mid

The Box One Square Taper Titanium/Carbon Bottom Bracket features precision sealed bearings and cold-forged, aluminum CNC machined cups. It is a thr...

Box Two External Bottom Bracket is built with alloy External cups to fit euro style bottom bracket shells. Includes sealed bearings and is a great ...

The Box Two Oversized External Bottom Bracket (30mm) is designed to get more "direct power" and eliminate some of the standard drivetrain loss.  Du...