Converts any American BB frame to sealed bearings for modern 3-piece cranks – boosts performance & durability.
Engineered to Precision: 41.25mm OD, 13.5mm Depth, and Just 2.2 oz, Machined for Perfect Fit.
Premium 6061-T6 Aluminum: High-strength, lightweight alloy precision processing, durable and corrosion-resistant, ensuring a smooth ride for you.
Precision-engineered cups: ensure a perfect fit and long-lasting use.
Just only requires you to press the components into the Cruis, Retro-style BMX or most standard American rear axle bearing shells. It is no threads needed, tool-free, portable and saves your time.
وصف
American Bottom Bracket Adapter Cups, Convert 1-Piece to 3-Piece Crank, Sealed Mid BB Conversion Kit for Old School BMX Frames - 6061 Aluminum