Good performance -- The bottom bracket 73mm can withstand the sliding spacing, resulting in a gapless movement, preventing dust and moisture from bearing, and has good waterproofness.
No lubrication resistance -- The bottom bracket 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.
Stable groove sealing -- The bottom bracket groove sealing is strong ,designed end cover greatly improves the sealing performance of the drainage, while reducing the sealing resistance, and the appearance is more high‑end.
Direct crank power transmission -- The bottom bracket aluminum alloy shaft bushing makes the crank power transmission more direct, without plastic elasticity causing power loss and bearing damage, and has better rigidity.
High strength and lightweight -- The bottom bracket has higher metal strength, while maintaining the characteristics of lightness, high strength and light weight of aluminum alloy material.
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