IRD QB-75 Quad bottom bracket

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This JIS square-taper bottom bracket features Japanese Tange-Seiki sealed cartridge bearings bearings, a hardened cro-mo spindle, an aluminum center sleeve and aluminum cups. ⓘ The crankset being used determines spindle length, not the frame. Please check what length the manufacturer recommends for your crankset or measure your existing BB's spindle. Specifications • made in Japan • 68mm English threaded (BSA) • aluminum body & cups • spindle lengths: 103mm, 107mm, 110mm • JIS square taper • bearing type: steel sealed cartridge • use Park Tool BBT-22 for installation & removal • weight: 225g (110mm) Show more