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Bottom Brackets

Shimano 105 Octalink Bottom Bracket
$65.00 - $85.00
Shimano's V1 compatible octalink bottom bracket. Recommended for V1 spline-compatible cranksets only. Not compatible with V2 or ISIS splined systems. Compatible with splined V1 Shimano Dura Ace®, Ultegra®, 105® and XTR® 22mm 8-splined hollow systems. Large diameter pipe billet spindle. Sealed Cartridge bearings. Splined spindle ends for increased joint strength.
Shimano BB-ES51 Octalink V2 Bottom Bracket
$53.00 - $64.00
Shimano BB-ES51 Octalink V2 Bottom Brackets - Fits Shimano Octalink V2 Spline Cranksets - Crankarm fixing bolts not included
Shimano Ultegra Bottom Bracket
$44.00 - $60.00
Shimano's Ultegra bottom bracket uses Pro Tour-proven technology for lighter weight and super smooth spinning, while still maintaining the same level of durability and stiffness. It's available in English, Italian, or Press Fit models.
Shimano UN55 Square Taper Bottom Bracket
$42.00
A good quality bottom bracket for traditional chainsets with super-accurate bearings for smooth operation and improved durability. The BB is also durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting.
Shimano UN55 Square Taper English Threaded Bottom Bracket
$42.00
Shimano's BB-UN55 Square Spindle Bottom Brackets are the unofficial standard for English-threaded cartridge bottom brackets. Quality, value, and durability come together to keep you cranking for many, many miles. - Fits JIS Square-Taper Cranksets - Hollow spindle - Crankarm fixing bolts not included
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