Sunrace BSA Bottom Bracket 131.5mm 68mm Aluminum - Silver

This bottom bracket from SunRace is a reliable BSA threaded unit designed to restore smooth crank rotation and solid drivetrain alignment on bikes using a 68 millimeter English-threaded frame shell. The 131.5 millimeter axle length provides the correct chainline for compatible cranksets, helping shifting stay consistent and reducing unwanted drivetrain noise. With an aluminum construction for a clean, corrosion-resistant finish, it’s a practical replacement choice for servicing worn or rough-running bottom brackets.

- BSA threaded bottom bracket for standard 68 mm frame shells
- 131.5 mm axle length to match compatible cranksets and chainlines
- Helps restore smooth quiet crank rotation when replacing worn units
- Supports consistent shifting by maintaining proper drivetrain alignment
- Aluminum construction for a durable corrosion-resistant setup
- Ideal for maintenance repairs and drivetrain refresh builds

Specifications
Brand: SunRace
Model: BSA
Type: Bottom bracket
Diameter: Ø34.8 mm
Shell Width: 68 mm
Axle Length: 131.5 mm
Material: Aluminium
Color: Silver