High-Quality Deep Groove Ball Bearings by Koyo – Precision Engineered for Motorcycles

Premium Chrome Steel Construction for superior durability and corrosion resistance, ensuring long-lasting performance under extreme conditions.

Precision-ground raceways and balls minimize friction, delivering smooth rotation and enhanced efficiency in high-speed applications.

Widely used in motorcycle engines, transmissions, and wheel hubs, ideal for replacing worn bearings or upgrading OEM components.

Multiple size options (6303, 6304, 6203, etc.) available to fit various motorcycle models and aftermarket modifications.

Strict quality control meets international standards (ISO/ABEC), providing reliable performance for racing, touring, or daily commuting.

Bulk purchase discounts available – wholesale pricing for mechanics, retailers, and large-scale rebuild projects.