Filter Kit is installed. Power Filter provides greatly improved
acceleration and a 150~200rpm increase by replacing restrictive
stock intake system. Features a large 3” diameter intake
duct and oversized K&N filter element that feeds your Supercharger
with a steady diet of cool air. Installs quickly and securely
using a silicone coupler and sturdy bracket.
RIVA / Vortech Supercharger Impeller is installed. This
high performance replacement impeller delivers more horsepower
and torque throughout the entire RPM range. Investment cast from
extremely strong, lightweight proprietary aluminum and CNC machined
to ensure exact tolerances. Sophisticated blade design is optimized
aerodynamically & precision balanced to provide smooth operation.
Installs easily into stock supercharger housing with no additional
Power Cooler is installed replacing original
intercooler system. Power Cooler is dramatically more efficient
than original intercooler system delivering an increase of 15 peak
horsepower with exit temperatures averaging 50°F cooler than
stock. Features large, unrestricted core that exhibits minimal pressure
loss compared to stock intercooler. Includes integrated blow-off
valve for improved reliability and performance. Valve relieves unwanted
pressure during off-throttle operation reducing supercharger clutch
wear and eliminating heat soak in discharge tube.
Rear Exhaust Kit is installed. Kit allows
removal of restrictiv e sound suppression system located between
waterbox and hull exit. Improves engine performance by reducing
back pressure & restriction. Includes custom molded exhaust
tube and billet through hull exhaust outlet. It is necessary to
install Rear Exhaust Kit to accommodate RIVA Power Cooler.
Pump Wedge is installed between pump stator
and output nozzle. 2-degree wedge trims up your pump nozzle raising
the bow of your craft for less drag substantially improving top-speed.
Features a double-sided lip to retain silicone sealant and prevent
Solas Concord Impeller is installed. This impeller is
specifically pitched for our Stage II Performance Package using
a pitch block to ensure accuracy. Billet impeller cone is included.
RXP Top-Loader Intake Grate is installed. Unique
reverse wing design eliminates prop spin and cavitation while delivering
improved handli ng and top-speed.
Pro-Series Sponsons are installed. Our sponsons
dramatically improve the handling of the RXP with superior blade
& backing plate design. Sponson depth is adjustable to accommodate
RIVA O.P.A.S. Performance Block-Off Kit is installed.
Removal of O.P.A.S. System improves handling characteristics for
competition use. Removal of O.P.A.S. System is necessary to accommodate
RIVA Rear Exhaust Kit. RIVA Racing does not recommend the removal
of O.P.A.S. system for recreational use.
NOTE: No modification of fuel delivery system required.
Our testing has shown that the original ECU automatically increases
the amount of fuel as a response to the increase in manifold boost
pressure with our Stage II Kit. Original air/fuel ratio is maintained
throughout the entire RPM rpm. Use of premium octane (92+) pump
fuel is required.
- STAGE II KIT FOR COMPETITION USE ONLY