Blackbearing BSA 68/73-Dub B5 Bottom Bracket

The Blackbearing BSA 68/73-Dub B5 Bottom Bracket is engineered to enhance your bike’s efficiency with precision and durability. Designed for frames with a 68/73 mm width, this screw-on bottom bracket features machined aluminum cups that fit securely to optimize housing alignment.

Enhanced Alignment for Maximum Fluidity: With two aluminum cups that screw into each other, this bottom bracket provides improved alignment, ensuring smooth operation and minimizing resistance. This precise fit enhances fluidity, leading to better performance on every ride.

Interchangeable Bearings for Eco-Friendly Maintenance: The Blackbearing BSA 68/73-Dub B5 offers a sustainable solution with its interchangeable bearings. Instead of replacing the entire bottom bracket, you can simply swap out the bearings, saving time and resources.

Extended Bearing Life and Frame Protection: The optimal alignment reduces stress on the frame, lowering the risk of cracking and extending the life of your bearings. This thoughtful design is perfect for riders who prioritize reliability and longevity in their cycling components.

Changing bearings doesn’t require extracting the entire bottom bracket body, minimizing the risk of frame damage 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.