Bottom Brackets

Bottom Brackets

Rotation Engineering offers BSA threaded bottom brackets designed for all disciplines of cycling and all weather conditions. These high quality bottom brackets are offered in your choice of two widths (73mm and 68mm), three spindle diameters (30mm, 29mm, and 24mm), three bearing configurations (no contact, full contact, and ABEC-3), and four colors (clear, bronze, purple, and black). So, whatever and wherever you ride, Rotation Engineering has a configuration to suit your needs. We have you covered on the road, cross-country, and mountain in the dry, wet, and all conditions.

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3 products

Black cylindrical device labeled "Rotation Engineering," with grooved ends. Appears mechanical or industrial, conveying precision and durability.A metallic, cylindrical bike component with the text "Rotation Engineering" printed on the black central section. Silver threaded ends feature ridge details.
BSA Threaded Bottom Bracket Sale priceFrom $299.00
Close-up of a chrome cylindrical mechanical part, labeled "Rotation Engineering." It has threaded ends, a smooth surface, and exudes a sleek, industrial look.Close-up of a chrome cylindrical mechanical part, labeled "Rotation Engineering." It has threaded ends, a smooth surface, and exudes a sleek, industrial look.
Titanium BSA Threaded Bottom Bracket Sale price$499.00
Close-up of a black cylindrical mechanical part, labeled "Rotation Engineering." It has threaded ends, a smooth surface, and exudes a sleek, industrial look.Close-up of a black cylindrical mechanical part, labeled "Rotation Engineering." It has threaded ends, a smooth surface, and exudes a sleek, industrial look.
T47 Internal Bottom Bracket Sale priceFrom $299.00
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