Note: All testing was performed with 1/3 tank of fuel & trim in neutral position.
RXP Stage III Kit Overview
Our Stage III Kit is designed specifically for the serious racer due to it's incredible performance level and requires use of fresh 91+ octane pump fuel.
RIVA Power 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 Pro-Series Supercharger Impeller & Housing are installed. High performance impeller and housing combo deliver a significant increase in boost pressure and horsepower due to increased blade area and larger interior volume. Sophisticated blade design that has been precision balanced for smooth operation.
RIVA Pro-Series Fuel Injector Kit is installed. Our 50lb racing injectors flow more fuel to match the needs of our Stage III modifications.
RIVA Power Cooler Kit with integrated Billet Blow-off Valve is installed replacing original intercooler system. Our 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.
RIVA Rear Exhaust Kit is installed. Kit allows removal of restrictive 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 Kit.
RIVA Racing ECU is installed. Our racing ECU is programmed to match the increased performance needs of modified engines. Fuel delivery, timing and rev limit have been recalibrated to compliment Stage III modifications. Plugs directly into wiring harness in place of stock ECU.
RIVA Thermostat Kit is installed. Kit reduces operating temperature of modified 4-TEC® engine by 30°F for maximum reliability and performance.
RIVA Titanium Valve Retainer Kit is installed. These lightweight retainers increase reliability and performance of modified engines. Unique design increases valve spring tension reducing possibility of valve float at high RPM.
RIVA Heavy-duty Supercharger Clutch Washers are installed. These are direct replacements for the original ceramic clutch washers that are prone to fail on modified engines. Must be use with 2006 style Sea-Doo supercharger shaft.
RIVA RXP Top-Loader Intake Grate is installed. Unique reverse wing design eliminates prop spin and cavitation while delivering improved handling and top-speed.
RIVA/Skat-Trak Swirl Impeller is installed. This impeller is specifically designed for our Stage III Performance Package using a pitch block to ensure accuracy. Billet impeller cone is included.
RIVA 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 cavitation.
RIVA VTS Extension Rod is installed. Allows maximum "nozzle down" adjustment after installation of RIVA Pump Wedge. Necessary with Stage III modification to trim bow down off the line while providing maximum top speed advantage when trimmed up.
RIVA Pro-Series Reduction Nozzle is installed. Allows nozzle exit diameter to be easily changed via interchangeable ring system to maximize performance in varying conditions. Includes three stainless steel rings in graduated sizes.
RIVA 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 riding style.
RIVA Pro-Series O.P.A.S. 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.