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IRD QB-55 Quad bottom bracket

$ 35.00

This JIS square-taper bottom bracket features Japanese Tange-Seiki sealed cartridge bearings bearings, a hardened cro-mo spindle, an aluminum center sleeve and steel cups.


Pro tip: 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.

• made in Japan

• 68mm English threaded (1.370" x 24tpi)

• JIS square taper

• spindle lengths: 103, 107, 110mm

• crank arm bolts not included

• use Park Tool BBT-22 for installation & removal

• weight: 255g (110mm)