Engine Upgrades

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...

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...

Order Now - Ships Late August Our new generation 'R3' 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...

Introducing the king of drop-in supercharger impellers!!! This next generation technology integrates the supercharger nut to allow for maximum blade height and achieve the ultimate acceleration and top speed!Our patent pending Fizzle ZR4 Supercharger...

Experience arm-stretching acceleration, blistering top speeds and instant throttle response with the Fizzle Z3 Supercharger Impeller! More torque and more horsepower = more fun!!Weighing in at just 98 grams, this lightweight, precision machined...

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...

Increase top speed, acceleration and throttle response with the Fizzle Z1 Supercharger Impeller! More torque and more horsepower = more fun!!Weighing in at just 96 grams, this lightweight, precision machined billet aluminum supercharger packs a big...

Increase top speed, acceleration and throttle response with the Fizzle V1 SHO Supercharger Impeller! More torque and more horsepower = more fun!!   Weighing in at just 100 grams, this lightweight, precision machined billet aluminum supercharger...

The Dean's Team titanium valve retainer upgrade will improve your engine's reliability and prevent valve float at higher RPMs, allowing you to raise your RPM limit safely and get more top speed. The kit includes 16 titanium valve retainers that have been...