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Riva Racing Sea Doo RXT-aS | RXT iS Stage 4 Kit
Riva Racing Sea Doo RXT-aS | RXT iS Stage 4 Kit

Stock (U.S. Model) 67 MPH @ 7,800 RPM
Stock (International Model)

68 MPH @ 7,800 RPM

Stage 1 Kit 70 MPH @ 7,900~8,000 RPM
Stage 2 Kit 74 MPH @ 8,300 RPM
Stage 3 Kit

77 MPH @ 8,550 RPM

Stage 4 Kit

80~81 MPH @ 8,750 RPM

Parts Price Total: $7,769.20
Price if Purchased as Kit: $7,387.00
You save $382.20!
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RIVA Sea-Doo XXX-Charger Supercharger
RIVA Sea-Doo XXX-Charger Supercharger
RIVA Racing XXX-Supercharger - 140mm/.060" Spacer;
For use with SeaDoo  4-Tec Models 215/255/260
Presenting the ultimate performance supercharger for Sea-Doo 215/255/260 engines! The all new RIVA XXX-Charger is a complete supercharger assembly featuring a sophisticated, lightweight 140mm Vortech impeller that is precision balanced to deliver smooth operation, a billet spacer, machined front & rear housings and RIVA Heavy Duty Clutch Washers. Increased interior volume produces huge performance gains delivering 15.5psi @ 8,500rpm.

Each XXX-Charger is hand assembled in-house using Genuine BRP shaft, bearings & hardware.Installs quickly in place of OEM supercharger.Requires RIVA Pro-Series ECU, RIVA Pro-Series Fuel Injectors (50lb) & RIVA Fuel Pressure Regulator Kit for correct calibration. Includes detailed installation instructions.

Applications: 215/255/260 Sea-Doo Models

  • 14psi @ 8,100rpm
  • 15.5psi @ 8,500rpm


Our Price: $1,699.95
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RIVA Athena Pro-Series Sea-Doo iControl ECU
RIVA Athena Pro-Series Sea-Doo iControl ECU

The RIVA/ATHENA Pro-Series iControl ECU provides a huge performance advantage to Sea-Doo iControl models delivering over 40hp to the stock 4-TEC engine. ECU is fully programmable with either RIVA supplied mapping or user adjustable parameters. Most calibrations require 91+ octane pump fuel. Plugs directly into factory wiring harness via waterproof connectors.

Key Features Include:

  1. Eliminates restrictive GPS speed limiter.
  2. Enables craft to start in SPORT mode for full power delivery.
  3. Easy loading of supplied calibrations/maps for various performance applications.
    • Performance Fuel Mapping: Delivers optimal fuel required for your specific level of modification based on boost pressure.
    • Performance Timing Curves: Special racing curves produce more power throughout the RPM range.
    • Rev Limiter Increase: Stock rev limit can been increased so engine RPM can be run higher producing more boost pressure and horsepower.
    • Boost Control for turbo applications. (Plug & play connector for wastegate solenoid).
  1. Ability to customize RIVA calibrations for special applications. Using supplied software, user can adjust parameters such as Fuel, Timing, Rev Limiter & Boost Control.
  2. Retains all iControl functions.
  3. Retains all OEM dash display functions & Engine Safety Functions.
  4. Includes an integrated barometric sensor that automatically compensates for altitude.
  5. Includes plug & play connector for RIVA Dash/Logger unit (RY11840-LD-MD60).
  6. Includes plug & play connector for optional lambda sensor kit (part# RY11540-LC1-6S5) for data logging air/fuel ratios & tuning functions.
  7. Direct-Connect design eliminates need for auxiliary wiring harness.
  8. Individual Cylinder Knock Control function protects engine. System identifies which cylinder is detonating by tracking firing order utilizing OEM knock sensor.
  9. User selectable dual calibration capacity.
  10. Provides an easy-to-use diagnostic system that monitors all engine sensors. Users can easily diagnose & clear faults codes via a computer connection with supplied software. This eliminates the need for the B.U.D.S. diagnostic & service took, which is exclusive to BRP dealers only.
NOTE: RIVA Pro-Series ECU is for competition use only.

Our Price: $1,299.95
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Sea Doo 255 / 260  RIVA GEN-3 Power Cooler Kit
Sea Doo 255 / 260 RIVA GEN-3 Power Cooler Kit
Our ‘GEN-3’ Power Cooler is the ultimate intercooler for high performance Sea-Doo engines! All new extruded cooler core design delivers excellent thermal efficiency and minimal pressure drops. Perfect for use in high boost supercharged and turbo applications. Precision machined billet water tanks hold up to high pressure cooling systems that can cause original coolers to fail. This is a direct high performance replacement for all Sea-Doo external intercoolers.

Key Features Include:

  • Cooler & denser air charge produces more horsepower.
  • Large cooler element rated for 450hp.
  • Replaceable sacrificial zinc anode protects cooler element from corrosion.
  • Integrated flushing system keeps Power Cooler at peak performance.
  • Direct replacement for smaller OEM 2011~12 external intercoolers.
  • Direct replacement for all OEM 2010 and prior external intercoolers.
  • Compatible upgrade for RIVA ‘GEN-2’ Power Cooler Kit (RS1751-PC).

Our Price: $799.95
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SeaDoo Valve Train
RIVA Sea Doo Valve Train Upgrade Kit ( 4-TEC all )
The Riva Valve Train Upgrade Kit increases the reliability of your modified engine by reducing the possibility of valve float at high rpm. Includes lightweight, precision-machined titanium valve retainers, racing valve springs, base washers and OE rocker arm shaft bolts that must be replaced during installation.

Our Price: $599.95
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Riva Pro-Series SeaDoo 100lb Fuel Injector
Riva Pro-Series Fuel Injector Kit, 100lb, Sea Doo 260 / 255
Our high performance 100lb per hour fuel injectors supply modified Sea•Doo iControl engines with the necessary amount of fuel to produce reliable horsepower. Must be used with Aftermarket Racing ECU for correct calibration. Available in three piece kit or sold individually.

Our Price: $499.95
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Riva Pro-Series Water Box
Riva SeaDoo Pro-Series Water Box
Our Pro-Series Sea-Doo Water Boxes deliver increased horsepower and performance by reducing exhaust restriction and back pressure. Developed on a flow bench, our water boxes feature radiused exhaust tubes and end caps for optimum exhaust flow. Innovative short design allows easy servicing of supercharger without removal of exhaust system. High strength aluminum construction & precision welds will survive backfires & overheating. Powder coated to prevent corrosion. Includes detailed installation instructions.

  • 2012 & Newer Sea-Doo RXP-X (T3) Models
  • 2009 & Newer Sea-Doo RXT/GTX iControl (S3) Models (suspended & fixed deck)

The following Additional RIVA Exhaust Components are required to complete the installation.
  • RXT/GTX (S3) iControl Models: Aluminum Exhaust Tube RS16091-ET-100
  • RXP-X (T3) iControl Models: Aluminum Exhaust Tube RS16091-ET-110
  • All S3 & T3 Models: Billet Rear Exhaust Outlet RS15090-ET
NOTE: Water Box not designed or intended to be used with stock rubber exhaust hose and/or stock exhaust outlet.

Our Price: $399.95
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SD Open Loop Cooling Kit
RIVA Sea-Doo 4-TEC Open Loop Cooling Kit
Our Open Loop Cooling Kit dramatically reduces engine operating temperatures for improved performance & reliability. Also allows installation of RIVA Performance Ride Plate by eliminating need for heat exchanger. Original closed loop system becomes quickly heat soaked in high performance applications. Open loop system increases cooling efficiency via steady supply of cool external water.

NOTE: Water routing is designed for engines running up to 8,650rpm.

Key Features Include:
  • New thermostat system regulates engine & oil temperatures.
  • Improved performance & reliability.
  • Allows installation of aftermarket ride plate.
  • Replaceable sacrificial zinc anode protects cooling system from corrosion.
  • Quick release flushing system flushes engine & exhaust cooling passages.
  • Billet aluminum pump cover with anodized finish.
  • Includes complete installation instructions.

Our Price: $389.95
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Riva Fuel Pressure Regulator Kit
Riva Fuel Pressure Regulator Kit, Rising Rate; SD 4-TEC `08 and Newer
Our Fuel Pressure Regulator Kits provide the precision pressure control necessary to compliment a variety of performance applications. Kits are fully assembled & mount securely via sturdy stainless steel bracket. High quality billet pressure regulator can adjust base pressure from 25 to 80 PSI. Unit can also be set up as rising rate fuel pressure regulator at a 1 to 1 ratio providing one additional pound of fuel pressure for every pound of boost gain. 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.

Our Price: $384.95
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Solas Concord Impeller
Sea Doo Solas R-Series Concord Impeller - 15/19R
Featured on Riva Racing Stage 1 Kit for RXP-X & RXT-X models.

Our Price: $329.95
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