Blackbearing BSA 68/73-30 B5 Bottom Bracket

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.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.