Engine Upgrades

RIVA Yamaha Supercharger Shaft Upgrade Kit

Order Now - Ships Late July The RIVA Super-Duty GEN-4 SHO/SVHO Supercharger Shaft Kit provides the ultimate in reliability for high boost applications. Kit features a revolutionary hydraulic shaft stabilization bearing that limits shaft deflection and...

Riva R4 Yamaha SVHO Supercharger Impeller (24+ LB Wheel)

The Riva new generation 'R4' supercharger impeller for the Yamaha SVHO Engine delivers incredible horsepower and torque throughout the RPM range. All new blade design produces increased boost pressure and air flow resulting in excellent acceleration and...

Fizzle Z2 Yamaha SVHO Supercharger Impeller (21+ LB Wheel)

Increase top speed, acceleration and throttle response with the Fizzle Z2 Supercharger Impeller! More torque and more horsepower = more fun!!Weighing in at just 97 grams, this lightweight, precision machined billet aluminum supercharger packs a big...