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Aluminum Alloy Mountain Bike BB 68-72mm Bottom Bracket MTB Bicycle Thread Type Middle Axis Crankset Parts
The high-strength 7075-T6 aluminum alloy shell is fully CNC processed.
Separate rubber washer, built-in spring, to withstand the sliding gap, so as to cause no gap action, prevent dust and moisture from entering the forest, with good waterproof.
Separate rubber washers, with double-sided sliding characteristics, will not increase resistance to the rotating bearing, and have high lubricity.
We adopt the newly designed end cover and adopt groove sealing technology to greatly improve the drainage and sealing performance, while reducing the sealing resistance and the appearance is more high-end.
The aluminum alloy shaft bushing makes the crank power transmission more direct, without plastic elasticity causing power loss and bearing damage, and has better rigidity.
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-3cm measuring deviation due to manual measurement.