Shimano Cartridge Bottom Bracket Set Bb-Un55 Non-Splined Type Axle
Shimano Cartridge Bottom Bracket Set Bb-Un55 Non-Splined Type Axle
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Shimano Cartridge Bottom Bracket Set Bb-Un55 Non-Splined Type Axle

$23.99
$23.99
$23.39
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Shimano UN54 bottom bracket now features a aluminum left hand cup instead of plastic. Sealed bearings and high quality spindle make it last for years and it's maintenance free.

Shimano UN55 70 x 113mm Square Taper Italian Bottom Bracket