Cinch BSA Bottom Bracket 30-100mm English Thread Black 30mm Spindle Compatible High-Quality Bearings for MTB Cranks Durable Aluminum Shell Easy Install Fits Most 30mm Spindle Systems

BSA Bottom Bracket for 30-100 mm English Thread
✔️ Sealed bearing, aluminum shell, 30mm spindle ready

This bottom bracket is designed for MTB cranks with a 30mm spindle and English-threaded frames, finished in black for a clean look.

✅ BSA English thread, shell diameter 30-100 mm
✅ Aluminum shell for durability and light weight
✅ 30 mm spindle compatibility for common MTB cranks
✅ Black finish for low-profile look
✅ Easy install with standard crank interfaces

💡 What is a bottom bracket used for in bike maintenance?

Bottom brackets let the crank spin smoothly by housing bearings inside the frame.

- Sealed bearing, English threaded design
- 30-100 mm shell compatibility
- Aluminum shell for light weight
- 30 mm spindle compatibility