Blackbearing B3 30407-2RS Bearing 30x40x7 mm

The Blackbearing B3 30407-2RS Bearing 30x40x7mm is built for cyclists seeking smooth, reliable performance in demanding conditions. Designed with intermediate-grade precision, it withstands everyday riding stresses while maintaining consistent rotation and efficiency.

Perfect Fit for DUB Bottom Brackets: Specifically developed to replace original SRAM and Truvativ DUB bottom bracket bearings, the B3 30407-2RS ensures exact compatibility and a secure fit. It restores the original smoothness of your drivetrain and improves long-term reliability.

Double-Sealed for Maximum Protection: Featuring “2RS” double seals, the bearing offers strong protection against water, dust and road debris. The seals preserve internal lubrication, minimizing maintenance and extending service life even in tough riding conditions.

Smooth and Long-Lasting Performance: Pre-lubricated with high-quality grease, the B3 30407-2RS Bearing ensures low friction, quiet operation and efficient energy transfer. Designed and assembled with precision, it is a 100% compatible replacement that delivers durability, smoothness and performance for SRAM/Truvativ DUB systems.

Made from SAE52100 chrome steel, both the balls and rings provide excellent hardness and resistance to wear. The robust chrome steel cage maintains structural stability and helps distribute load evenly for smoother pedaling.

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.