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Bottom Brackets and Bearings

Shop bike bottom brackets and bicycle bottom bracket bearings for road, mountain, and gravel bikes. Explore threaded, press-fit, and cartridge bottom brackets designed for smooth crankset rotation and reliable drivetrain performance. Whether you're replacing worn bearings, upgrading components, or building a new bike, find quality bottom brackets at competitive prices at Sport Factory Pro Shop.

There is no standard in bicycle bottom brackets and manufacturers often come up with new designs specific to a brand or model.  This creates a lot of confusion for the consumer when they have to replace their bottom bracket.  The bottom bracket is the bearing set that allows the crank to spin freely.  It has match the diameter of the crank spindle; usually 24mm or 30mm.  Beyond that the bottom bracket is specific to the bike design.  Before you purchase a bottom bracket visit your manufacturers website to determine the exact specifications of your bicycles' bottom bracket.  We have a great selection of bottom brackets that include BBRight, BB30, PressFit, and more. 

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