Blackbearing D20 40x49x6mm 45/45° Headset Bearing

The Blackbearing D20 40x49x6mm 45/45° Headset Bearing delivers consistent, play-free steering with a durable, low-friction feel designed for premium cycling performance.

Correct Fit for 1-1/2" Forks: Sized at 40mm (ID) x 49mm (OD) x 6mm (width), this bearing is made for 1-1/2" fork steerer interfaces—commonly used as the lower bearing on tapered headsets for modern road, gravel and MTB frames.

45/45° Angular Contact: A true 45/45° angular contact profile ensures stable load distribution under braking and cornering, improving headset alignment and extending service life.

Chrome Steel Construction with Seals: Precision-ground chrome steel balls and races provide excellent hardness and wear resistance. Integrated seals help keep out water and grit for smooth performance in real-world conditions.

Factory-lubricated with high-quality grease, the D20 drops in cleanly and runs quietly, reducing maintenance while keeping your steering light and accurate.

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.