SHIMANO quality/performance cartridge bearing square bottom bracket
・Better chainline stability with chain line stabilizer
・3 structures available
・Standard, E-type, chain case options
・Adapter material: Aluminum
BB Type
SQUARE
Shell width(mm)
68 (BSA)
Small Parts
Without fixing bolt
Sizes : 107,110,113,115,117.5,118,122.5,127.5
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SHIMANO Bottom Bracket BB-UN300 Square Type 68 (BSA)
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