Bike Bottom Bracket, CNC Turning Aluminum Alloy Waterproof Sealed Bearing, for Mountain Road Fixed Gear Folding Bike 68 73mm

Effective waterproofness, the separable rubber gasket can withstand the sliding , resulting in a less movement, preventing dust and moisture from bearing, and has good waterproofness. There is no resistance to lubrication, the separable rubber gasket has the characteristics of double‑side sliding, which will not increase the resistance to the rotation bearing, and the lubrication is high.

sealing is strong, and the newly designed end cover greatly improves the sealing performance of the drainage, while reducing the sealing resistance, and the appearance is more high‑end. Item Type: Bike Bottom Bracket  Material: Aluminum Alloy + Nylon Color:Colourful Product Size: Length: Approx. 90mm Celsius 3.5in Outer Diameter: Approx. 44mm Celsius 1.7in Inner Diameter: Approx. 24mm Celsius 0.9in  Thread Pitch: Approx. 35mm Celsius 1.4in Wheelbase: Used for 68-73mm Celsius 2.7-2.9in Threaded Bottom Bracket Features: Suitable for Use with Bottom Bracket Width of 68-73mm Celsius 2.7-2.9in, Bearing Hollow Shaft, Sealed Bearing, CNC Turning, Anodized. Suitable : Mountain Bike Celsius Road Bike Celsius Fixed Gear Bike Celsius Folding Bike