PWC Muscle Yamaha GP1800 STAGE 2 KIT

Fits Yamaha GP1800

This kit delivers an awesome level of performance (+18mph) through easy to install modifications. Expect huge gains in acceleration and torque along with fantastic top speed. Requires use of fresh premium pump fuel (91~93 octane).

RIVA MaptunerX Yamaha 1.8L Bundle is utilized to reflash your original ECU (Engine Control Unit) for added performance. The MaptunerX Bundle delivers instant plug-in horsepower! Quickly and easily load our Stage 3 performance tune into your Yamaha ECU eliminating the need to ship out your ECU for programming. Features a slick, full color, touch screen display. There is no limit to the number of vehicles or tunes you can reflash with the MaptunerX. Simply purchase one additional tuning license for each vehicle that you would like to program. The MaptunerX features a slick, full color, touch screen display for east operation. Includes full access to RIVA's world famous tuning library along with unmatched technical support. Easily switch between performance tunes and then back to stock settings if you wish.

RIVA Yamaha GP1800 Power Filter Kit is installed. Kit replaces restrictive factory intake system delivering improved throttle response and top-speed.

Riva Yamaha Intake Manifold Upgrade Kit is installed. Precision tapered billet sleeve directly replaces restrictive mesh element in intake manifold enabling engine to produce more horsepower through increased air flow and boost pressure (+1PSI).

Fizzle intercooler kit with BOV is installed. Power Cooler is dramatically more efficient than original intercooler system delivering an increase of 18 peak horsepower with exit temperatures averaging 50°F cooler than stock. Features large, unrestricted core that exhibits minimal pressure loss compared to stock intercooler and integrated blow-off valve mount.

RIVA Valve Retainer Upgrade Kit Yamaha 1.8L is installed. Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm.

Riva Engine Cooling Upgrade Kit for Yamaha SVHO Skis is installed. Kit delivers dramatically improved cooling efficiency to engine and oil cooler for increased performance & reliability. Greatly enhances water flow & pressure by replacing restrictive OEM pump strainer & water fittings with high-flow billet components and superior routing.

Riva Free Flow Exhaust Kit, GP1800/VXR/VXS is installed. Kit replaces restrictive sound suppression system located between water box and hull exit reducing backpressure and engine operating temperatures.

RIVA Solas Yamaha 1800 Impeller 13/18R is installed. New design incorporates a large blade area and superior hub design that deliver increased acceleration and top speed. Billet nose cone included.

WORX Yamaha GP1800/VXR/VXS Top-Loader Intake Grate is installed. Race bred design features oversized top loader wing and optimized inlet ramp for racing applications. Bulletproof stainless steel construction makes this grate virtually indestructible and eliminates the need for additional restrictive support bars.

RIVA Yamaha GP1800 / VXR / VXS Performance Ride Plate is installed. Our ride plate increases top speed and significantly enhances handling characteristics.