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Bottom Bracket

julio 22, 2026

Promax EX-1 External Sealed Bearings BSA 68/73mm Bottom Bracket for 24mm Cranks

EX-1 External bottom brackets feature cold-forged and CNC-machined alloy cups, dual-labyrinth bearing covers and precision sealed bearings. They are the perfect match to Promax CF-2 and HF-2 cranks and ultimate upgrade to the budget BBs sold with most crank sets. Fits all 24-millimeter bottom bracket spindles and frames with 68 or 73 x BC1.37 inches bottom bracket shells. Item Specifications: Weight, 102.9, BB/Frame Interface, English Thread, BB Shell Width, 68, BB Style, Euro, Defined Color, Black, Bore, 24mm, SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day! HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to! Contact Us! (9-5 Mon-Fri, 12-4 Sat & Sun EST) Chat With Us
julio 22, 2026

Shimano Saint BB80B BSA 68mm/73mm Bottom Bracket for Shimano HT II 24mm Spindles

Shimano Saint BB71, BB80B, BB80D Hollowtech II Bottom Brackets Includes 3 x 2.5mm spacers. Extra long threads on drive-side cup for increased interface when using BB mounted chain control device. Gold anodized finish. Item Specifications: BB/Frame Interface, English, Spindle Interface Type, Shimano Hollowtech II, BB Shell Width, 68, BB Shell Width, 73, Defined Color, Gold, Bottom Bracket Shell I.D., 1.37",.