Blackbearing B4 30.15x39x6.5mm 45/45° Headset Bearing

Designed with angular contact bearings, the B4 efficiently handles both radial and axial loads, enhancing stability and balance. This advanced design ensures smooth and steady steering, making it perfect for sharp turns and uneven paths.

Built to Last with Chrome Steel: The B4 uses SAE52100 Chrome Steel balls and rings, ensuring exceptional durability and resistance to wear. This robust construction provides long-lasting performance, allowing you to rely on your steering system in even the most challenging conditions.

Superior Steering for Precision Control: The Blackbearing B4 Headset Bearing is engineered to provide flawless steering performance, offering smooth handling and stability for every ride. Designed to replace original bearings seamlessly, it ensures a reliable and responsive cycling experience for demanding riders.

Premium Grease for Smooth Operation: Lubricated with premium quality grease, the B4 reduces friction and wear, ensuring consistent performance. This high-grade lubrication keeps your steering system smooth and responsive, providing a reliable and enjoyable ride every time.

Its precise fit restores the original steering dynamics of your bike, delivering controlled maneuverability on all terrains.

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.