- Alloy Shell Weight: 106g Steel / 100g Ceramic
- Plastic Shell Weight: 76g
- For 30mm Spindle Cranks
- For use with PF30, BBright and BB 386 Evo
The 4630 is designed to allow any PF30, BBRight or 386 EVO to work with a 30mm crankset. This bottom bracket is available with either plastic cups, or machined aluminum.