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RXP-X 255 Stage 1 Kit



Performance Data

Note: All testing performed with 1/3 tank of fuel, trim in neutral, sea level elevation, air temp 80-degrees F.

Parts Price Total $1371.75
Special "Kit" Price $1299.00
Was: $1,371.75
Sale: $1,299.00
Save: 5%
Save: $72.75


This modification delivers the maximum level of performance (+6mph) through easily installed air intake and pump enhancements. No internal engine modifications are required.

RIVA Performance 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.

Worx Racing Intake Grate is installed. This intake grate reduces prop spin and cavitation while delivering enhanced acceleration and 2mph additional top-speed.

Solas 'R'-Series Concord Impeller is a special performance impeller offered exclusively by RIVA and RIVA authorized dealers. This impeller is specifically pitched for our Stage 1 RXP-X package using a pitch block to ensure accuracy. Billet impeller cone is included.

RIVA 2 degree Pump Wedge is installed. 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 I modification to trim bow down off the line while providing maximum top speed advantage when trimmed up.

RIVA Pro-Series Reduction Nozzle is installed. Replaces original 87mm reduction nozzle allowing nozzle exit diameter to be easily changed via interchangeable ring system. Includes three stainless steel rings in graduated sizes (81, 82 & 83mm) to compliment the impeller pitch in varying conditions maximizing top speed and performance.


Use of premium octane pump fuel (91+) is required.

RIVA Performance Kits intended for competition use only.


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