BlackBearing B3 61805W6-2RS/6805W6-RS Bearing 25x37x6 mm

The Blackbearing B3 61805W6-2RS/6805W6-RS Bearing 25x37x6mm is engineered for cyclists who demand reliable performance and durability across all road conditions. Treated with a black oxide finish, it offers superior resistance to corrosion while maintaining smooth and efficient operation.

Black Oxide Protection for Longevity: This bearing features a black oxide treatment that enhances corrosion resistance, making it ideal for humid, wet, or muddy riding environments. The coating provides added protection without compromising the bearing’s precision or rolling smoothness.

OEM-Grade Replacement Compatibility: Often pre-installed on many bicycles as original equipment, the B3 61805W6-2RS serves as a 100% compatible replacement. It ensures perfect fitment and restores your bike’s original efficiency and responsiveness.

Sealed and Pre-Lubricated for Smooth Operation: With “2RS” double seals protecting against water and dust, the bearing stays clean and well-lubricated. Pre-filled with high-quality grease, it ensures quiet, low-friction performance. Equivalent to the older 6805-2RS W6 reference, the updated 61805W6-2RS model continues to set the standard for smooth, reliable cycling performance.

Made from SAE52100 chrome steel, both the balls and rings deliver excellent hardness and wear resistance. The chrome steel cage adds stability, ensuring consistent rotation even under high load or frequent use.

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.