THEORY - AMERICAN BB SET

[THEORY - AMERICAN BB SET American BB bottom bracket modification kit]

The American BB loose ball bearing kit for retro or entry-level BMX models uses an aluminum alloy MID bearing adapter and a MID sealed bearing to greatly increase the stability of the bottom bracket and eliminate the problem of traditional loose ball bearings being easily loosened.

- Material: AL6061 aluminum alloy dust cover

- Bearing size: 19MM & 22MM inner diameter

- Bearing specifications: MID sealed bearing*2PC+ American BB (ID: 51.5MM) aluminum alloy conversion seat*2PC

- Aluminum alloy casing: 51.3MM casing*1 with 1.5MM*2 & 3.2MM*2 gaskets

- Color: BLACK

- Weight: 235g

- Made In Taiwan

＊It is recommended to have this bearing replaced by a professional store for assembly

＊Traditional loose bead bearing modification requires additional purchase of 19MM or 22MM axle