Review on Enhanced Performance Kart Wheel Bearings: Advanced Power Transmission Solutions by Corey Greene

I bought these bearings to replace leaf spring bushings on a custom truck. I pressed 7 of these side by side into 3" wide springs each rated at over 800 lbs, 7 together accounted for about 5600 lbs per bushing. They did exactly what I wanted which was freeing the springs to allow them to open more freely and off than a rubber or polyurethane bushing. Not exactly what they were intended for, but they were perfect for my application and actually cheaper than buying rubber substitutes.