Presenting the ultimate (drop-in) supercharger impeller for the Yamaha SVHO Engine! Designed to deliver more horsepower and torque throughout the RPM range resulting in excellent acceleration and top speed. Precision machined from billet aluminum to ensure exact tolerances and anodized to prevent corrosion. All new blade design is optimized aerodynamically and high speed balanced for smooth operation. Installs easily into stock supercharger housing with no modifications required. Includes detailed installation instructions. Produces 24psi @ 8,500rpm.