Bottom Bracket Bike / Bicycle Bearing Set For Adult BMX Or Mountain Bike- Silver
- Adult or junior bottom bracket set (please measure the cups size you need)
- Suitable for 1 piece cranks
- Bearing ring (outside diameter) 45mm
- Outside cup - (where it fits into the frame) 51.5mm
- Not suitable for very small kids bmx bikes
- Cups, washer, locknut and bearings all included
- (Kids bottom bracket also available from our shop in the smaller size)