The Blackbearing BSA 68/73-30 B5 Bottom Bracket is crafted for riders seeking enhanced fluidity and longevity in their cycling components. Built with two machined aluminum cups, this bottom bracket screws securely into the frame, ensuring optimal alignment and reducing wear.

Perfect Alignment for Increased Efficiency: The screw-in aluminum cup design ensures precise alignment within the frame, providing smoother operation and maximizing pedaling efficiency. This feature minimizes friction, giving you a performance advantage on every ride.

Durable and Eco-Friendly with Interchangeable Bearings: This bottom bracket is designed for easy maintenance with its interchangeable bearing system. Rather than replacing the entire bracket, you can simply change the bearings, reducing waste and ensuring sustainable performance.

Enhanced Bearing Life and Reduced Frame Stress: The optimized alignment reduces stress on the frame, minimizing the risk of cracking and extending the lifespan of your bearings. This design is ideal for high-performance and long-distance riders who need reliability and durability.

The secure fit eliminates the need to extract the bottom bracket’s body when changing bearings, decreasing the risk of damaging the frame and simplifying maintenance.