Sealed bearing cartridge bottom bracket for Messenger series Cranksets. SPECIFICATIONS Axle Length: 103mm Axle Type: JIS Taper Cup Thread: 1.37”x24T Suits: 68mm BSA Frames Cup Material: Steel INCLUDES Bottom Bracket Cartridge Left Hand Cup * Axle Bolts are NOT included. We Recommend the Sugino Alloy Crank Caps, or Standard Crank Bolts SG Mighty taper/JIS is not compatible with SG75 Taper
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