BIKECO BB86 BB90 BB92 bottom bracket bearing press fit for Shimano/SRAM GXP bicycle crankset/shaft (gold)

✔ High strength 7075-T6 aluminum alloy casing, full CNC machining, not just the new look, with a patented structural design RIDEA-BB has the best strength and longevity. ✔ Lifespan: the use of special placement techniques can increase the lifespan. ✔ Water resistant: separate rubber gasket, built-in spring, resists sliding gap, which does not produce a separation action to avoid dust and moisture in the Peilin, it is water resistant ✔ Lubricity: a separate rubber gasket, with bilateral sliding characteristics, will not increase the rotation of the Peilin resistance, 100% lubrication ✔ Rigidity: The shaft sleeve of the aluminum alloy, makes the power transmission of the crankshaft more direct, will not have plastic elasticity to cause loss of power and damage to the bearings.