Theory American Sealed BMX BB

Theory American Sealed BMX BB Bottom Bracket in Colors, 19mm or 22mm

American Sealed Bottom Bracket with Sealed Bearings, colored Aluminum Cups, 19mm center axle hole. These fit most all American size frame bottom brackets. Old school BMX bikes usually have the American Size BB. This BB will enable you to put GT power Series or Profile Racing 19mm cranks on your Retro BMX frame for example. You could also get these in 22mm which will work with the GT 22mm Axle cranks like the Power Series Aluminum Cranks.

We also have Profile Racing, Mission and Blackops American BBs

These American Colored Bottom Brackets ave currently available in 6 colors and 2 axle diameters.

These are similar to Redline, Primo, Odyssey, Crupi American BBs from years ago, but these are re-pop in colors.