Bottom brackets aren't the sexiest part on your bike, but they are sure are important! The Raceline External Euro BB will suit any frame with a Euro bottom bracket and will have you spinning up to 200 RPM effortlessly. The cups on these BBs are fully CNC'd from 6061 alloy.
Specs:
- Full CNC machined 6061-T6 alloy cups
- External mounted bearings, 68-73mm BSA 1.37” 24T
- Includes spacers
- For 24mm spindle crank
