Wheels Manufacturing BB30A Outboard ABEC-3 Bottom Bracket Bearings are designed to keep your bike running smoothly. These bearings feature two machined aluminium cups that thread together, ensuring stability in the frame. This design not only extends the life of the bearings but also makes maintenance easier. With the Wheels Manufacturing BB30A Outboard ABEC-3 Bottom Bracket Bearings, you can say goodbye to creaking noises. Enjoy smoother rides and longer-lasting bearings, with the added benefit of quick and easy replacement. Key Features: Threaded aluminium cups for a stable and durable fit Reduces creaking and enhances smooth operation Designed for 24mm/22mm spindle diameter cranks (SRAM/Truvativ GXP) Compatible with BB30A frames (42mm ID, 73mm wide asymmetrical BB shell) without adaptors These bearings are specifically crafted for BB30A frames, making them a perfect choice for cyclists looking for reliability and ease of use.