Blackbearing B543 39.7x50.8x7mm 90/90° Headset Bearing

The Blackbearing B543 39.7x50.8x7mm 90/90° Headset Bearing is a high-performance replacement designed specifically for Cannondale bicycles. Featuring a Black Oxide treatment, this bearing provides enhanced resistance to corrosion, ensuring durability and reliability for every ride.

Tailored Fit for Cannondale Forks: With precise dimensions of 39.7 x 50.8 x 7mm (1"9/16 x 2" x 9/32") and a 90/90° angle, the B543 is compatible with Cannondale Forks including Fatty, Super Fatty, Lefty, and Silk. This perfect fit restores original steering dynamics, giving you smooth and precise handling on diverse terrains.

Enhanced Durability with Black Oxide Treatment: The Black Oxide finish not only improves corrosion resistance but also adds to the longevity of the SAE52100 Chrome Steel balls and rings. This treatment makes the B543 an excellent choice for cyclists seeking robust performance in varied weather and riding conditions.

Premium Grease for Smooth Performance: Pre-lubricated with high-quality grease, the B543 minimizes friction and ensures long-lasting smooth operation. The lubrication enhances the bearing’s lifespan, providing cyclists with consistent and reliable steering performance for every adventure.

The advanced angular contact design of the B543 ensures stable and controlled steering by managing both radial and axial loads efficiently.

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.