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Specification
BB Cups L&R bearing cups with CERAMIC Bearings (BC-1.37″ thread).
Designed for Road RacingExtremely durable external bearing system.Forged and CNC Machined from aluminum.Custom cartridge gearings for longer bearing life.new water resistant sealUse the shim put into the BSA BB, compatitable with SRAM GXP BB. the spacer to adjust the assembling tolerance.