Bottom Brackets

New old stock. 115mm length. For use with square taper cranks. Fits 70mm Italian bottom bracket shell. Includes crank bolts. Shimano BB-UN53 115mm Italian Cartridge Bottom Bracket

Good condition. 120mm length. 3 sided taper. 51mm diameter cups. Bearing surfaces have some visible wear but run quite smoothly. Includes crank nuts, cups, bearings, races, and related hardware. 1940s vintage. CCM Triplex Complete Bottom Bracket Assembly 120mm

New old stock. DMR Wonder Cups allow you to use a standard English threaded bottom bracket in a press fit BMX or other American sized bottom bracket shell. Kit includes cups and mounting bolts. Made in the United Kingdom. DMR Original Wonder Cups Bottom Bracket Converter

New old stock. 109.5mm length. For use with Octalink cranks. Fits 68mm bottom bracket shell. Shimano Ultegra level quality match. Shimano BB-6500 Ultegra 109.5mm x 68mm Octalink Bottom Bracket - NOS

Gutter Seal Technology drastically improves sealing against the elements while reducing seal drag. Mountain and road bike compatible. For use with Sram/TruVativ GXP 2-piece cranks. Fits 68mm and 73mm bottom bracket shells. English threads. Sram GXP English 68/73mm Bottom Bracket

Two machined aluminum cups offer increased durability and bearing life, while keeping a simple press together method for installation and maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement. Bearings: Enduro ABEC-3 Color: Black Bottom...

External English (BSA) threaded bottom bracket for 68mm and 73mm shells. Enduro bearings and silicone seals for the most durable and smoothest bottom brackets available. Fully serviceable. Direct replacement for Shimano HollowTech II bottom brackets. Includes: (2) - Enduro Silicone dust seals (1) - 2.5mm...