The 928 Motorsports Bearings: 928 Motorsports is the only manufacturer of these high speed bearings for the Powerdyne supercharger in the World. Our years of experience have brought us to the right hi-temp (450° F) lubricant, ceramic ball bearings, and the right alloy inner and outer races to get up to 46,000 rpm out of these bearings where they had been previously limited to 36,000 rpm. Be wary of others "high speed" or "ceramic" bearings - they are not as good as ours!
The 928 Motorsports Belt: We improved on the original belt, too. Raising the impeller speed to 46,000 rpm from 36,000 rpm (stock) requires a tougher belt. We commissioned Continental to make us a special batch of their Super-Torque drive belts just for this application, and we find it performs better than the Gates belt.Kit Includes: