This is a Whitz Racing Products 5x13x4mm HyperGlide ...
Ceramic Bearing, a high performance ceramic and stainless steel bearing designed for performance and longevity. Features: Increased Drivetrain Roll Lower Friction Cooler Temps ABEC-5 Rating Si3N4 Ceramic Balls Stainless Steel Includes: (1) ...
5x9x3mm Ceramic Ball Bearings, and are intended for use with the Schumacher Cat SX2. These bearings are used to support the rear layshaft and are an excellent upgrade for any application that ...