Theory 22mm Mid BMX Bottom Bracket Kit - Purple 152mm Frame: Custom Formed AL-6061 Heat

Frame: Custom Formed AL-6061 Heat Treated Aluminum for 29" wheels

so they run smoother and last longer for those who ride often in all conditions

The inverted tread design and knurled tread surface are low profile and fast rolling without sacrificing traction

Shell: Euro

Theory 22mm Mid BMX Bottom Bracket Kit - Purple 152mm Frame: Custom Formed AL-6061 HeatThe Theory 22mm Mid BMX Bottom Bracket Kit includes , sealed bearings, anodized cone spacers, bottom bracket spacers, and a tube spacer. Color: Purple 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 accurate