Theory 22mm American Bottom Bracket Kit - Gold Red Stripe Horizontal ribs on the front

Horizontal ribs on the front of the grip offer improved traction

The GT Chromoly 24 crank is a classic back with the same arm shape - constructed of 4130 chromoly - now with a 24mm hollow chromoly 48 spline spindle and flush mount spindle hardware

Alienation`s first 4-piece bar is built from straight-gauge 4130 chromoly tubing that has been post-welded heat treated for extra strength

maintenance free spin

Color: Gun Metal Gray

Theory 22mm American Bottom Bracket Kit - Gold Red Stripe Horizontal ribs on the frontThe Theory 22mm American BMX Bottom Bracket Kit includes anodized cups, sealed bearings, cone spacer, bottom bracket spacers, and a tube spacer. Color: Gold anodized Note: This part was colored by anodizing, which is a method of coloring metal. Color differences do occur among manufacturers and even among batches from the same manufacturer. This is not a flaw or imperfection, but it is inherent to the anodizing process. We make every effort to show