Black Ops BB Conversion Kit

This kit adapts a bicycle frame originally designed for a one-piece crank (American bottom bracket) to accept a standard three-piece crankset (Euro bottom bracket). It essentially allows you to upgrade your drivetrain components to modern, threaded standards.

This kit is specifically designed for frames with a 68mm American bottom bracket shell. Before purchasing, ensure your frame shell width is exactly 68mm to guarantee a proper fit.

Yes. The cups are machined from aluminum, which balances weight and strength, while the included steel hardware provides the necessary durability to handle the torque and stress of daily riding.

Not at all. The entire kit weighs only 104 grams, making it a lightweight solution that won't noticeably impact your bike's overall handling or performance.

You will need a standard bottom bracket tool compatible with Euro-threaded cups to tighten them into the adapter. Because this is a press-fit style adapter into the American shell, you may also need a headset press or a similar tool to seat the cups securely.