RXT iS 255 Stage 4 Kit
This kit delivers a significant level of performance (+13mph on U.S. models) through easy to install, bolt-on engine, exhaust, and pump enhancements. Requires use of fresh premium octane pump fuel (91~93).
RIVA MaptunerX BRP Bundle is utilized to reflash original ECU. MaptunerX provides ability to quickly and easily load performance tunes directly into your stock ECU eliminating downtime that results from shipping for programming. Performance Tunes are calibrated to provide optimum fuel delivery, ignition timing and rev limit to compliment RIVA Racing Performance Kits. OEM dash display, engine diagnostics & engine safety functions are retained. MaptunerX features a full color, touch screen display, ability to restore stock tune settings and access to RIVA's complete tuning library and technical support.
Bosch VT1100 Fuel Injector Kit is installed. High performance 1100cc fuel injector kit supplies modified Sea-Doo engines with the necessary amount of fuel to produce reliable horsepower.
RIVA Fuel Pressure Regulator Kit is installed. Kit provides precision control of fuel pressure to meet fuel requirements of the Riva Stage 4 engine modifications. Plugs directly into original fuel system with OEM connectors and features a large 3/8" fuel return line. Includes integrated liquid-filled pressure gauge and billet Fuel Pressure Regulator Block-Off necessary for removal of stock fuel pressure regulator in fuel tank.
RIVA Power Filter Kit is installed. Dramatically increases air flow to your supercharger via a large 4" diameter intake duct and oversized K&N filter element delivering greatly improved acceleration and top speed. Ducting is precision formed from a race proven composite that will not conduct heat to incoming air. Installs securely to supercharger via a tapered velocity stack, silicone coupler and stainless steel clamps. Includes pre-filter element.
RIVA Sea Doo XX-2 Charger. Our new XX2-Charger delivers 15 psi of boost pressure at 8,500rpm producing arm wrenching acceleration and increased top speed. High performance billet impeller & 4MM spacer increase horsepower through superior impeller blade design and larger interior housing volume. Lightweight billet impeller features a sophisticated blade design that is precision balanced to deliver smooth operation. Spacer & impeller install quickly and easily onto stock supercharger base plate. IJSBA Limited Class legal. Requires RIVA/MaptunerX, 100lb Fuel Injectors & RIVA Fuel Pressure Regulator Kit for correct calibration. Includes detailed installation instructions.
RIVA 'GEN-3' 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.
RIVA Open Loop Cooling Kit is installed. Open loop system increases cooling efficiency via steady supply of cool external water dramatically reducing engine operating temperatures for improved performance & reliability.
RIVA Intake Manifold Upgrade Kit is installed. Removal of restrictive screen element from inside of intake manifold enables your engine to produce more horsepower through increased boost pressures (+1lb). Special o-ringed, billet block-off plug with integrated fitting for aftermarket boost pressure gauge fills opening left after removal of screen element.
RIVA Valve Train Upgrade Kit is installed. Titanium valve retainers and heavy-duty valve springs increase reliability of modified engine by recucing the possibility of valve float at high RPM. To ease installation of Valve Train Upgrade Kit we offer a unique Valve Compression Tool that allows installation without removal of cylinder head saving you time and money.
RIVA Free Flow 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.
Solas 'R' Series Concord Impeller is a special performance impeller offered exclusively by RIVA and RIVA authorized dealers. This impeller is specifically pitched to our specifications using a pitch block to ensure accuracy. Billet impeller cone is included.
OEM 83.5mm Reduction Nozzle is installed replacing the standard 87mm reduction nozzle. Smaller exit nozzle compliments the 15/19R pump impeller maximizing performance.
FOR COMPETITION USE ONLY. KIT NOT FOR USE ON POLLUTION CONTROLLED VEHICLES.
These are additional performance upgrade parts that can be purchased individually to improve the performance kit.
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