IRD QB-55 Quad bottom bracket

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.

 

ⓘ 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)

• steel body & cups

• spindle lengths: 103mm, 107mm, 110mm

• JIS square taper

• bearing type: steel sealed cartridge

• crank arm bolts not included

• use Park Tool BBT-22 for installation & removal

• weight: 255g (110mm)