Compared to the power transfer of the conventional square taper spindle, the 8-splined OCTALINK interface that connects the bottom bracket and crankset increases the strength and rigidity for the entire assembly.
$13.99 - $21.99
BB-UN26 cartridge bottom bracket. - Smooth rotation - Square taper spindle - Sealed cartridge bearing assembly
Shimano's Dura-Ace Bottom Bracket is perfect for Shimano's Dura-Ace crankset. It features durable composite construction, super-smooth sealed bearings and a plastic sleeve for additional protection.
Shimano Dura-Ace BB92, BB9000 Hollowtech II Bottom Brackets - Bottom Bracket Shell I.D.: 1.37" - Defined Color: Black - Weight: 65 g - Spindle Interface Type: Shimano Hollowtech II
$23.99 - $39.99
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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