Blackbearing D12 40x51.5x7mm 45/45° Headset Bearing

The Blackbearing D12 40x51.5x7mm 45/45° Headset Bearing is expertly crafted to ensure smooth and responsive steering. Designed to replace original bearings, it provides superior stability and control for a wide range of cycling needs.

Tailored Fit for 1"-1/2 Fork Steerers: With dimensions of 40 x 51.5 x 7mm and a 45/45° angle, the D12 is perfectly suited for 1"-1/2 fork steerers. Its compatibility with leading brands like FSA, Stronglight, Cane Creek, Acros, and Ritchey makes it an excellent choice for performance-driven cyclists.

Chrome Steel Construction for Durability: Built with SAE52100 Chrome Steel balls and rings, the D12 offers excellent resistance to wear and tear. This robust construction ensures long-lasting reliability, even under demanding conditions, providing consistent performance mile after mile.

Premium Grease for Smooth Performance: Pre-lubricated with premium-quality grease, the D12 minimizes friction and ensures seamless steering. This lubrication extends the lifespan of the bearing, making it a dependable upgrade for cyclists seeking long-term performance.

The Blackbearing D12 features advanced angular contact bearings that effectively manage radial and axial loads. It enhances balance and precision, delivering smooth and controlled handling on every terrain.

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.