First Components Fat Bike Bottom BracketThis is a high-quality threaded (BSA) bottom bracket manufactured from high strength aluminum. The BB cups are compatible with various Race face, Shimano and FSA external BB systems, making for a great alternative to factory spec components. Features
- 24mm Spindle
- Interchangeable with select Shimano and FSA external MOUNTAIN BB systems.
- Fully serviceable with BBEXITOOL
- Designed for Fat Bikes with Threaded Shell and available in both 100mm and 120mm