Internal & Maintenance

This Universal Water Filter/Strainer Kit protects your inter cooler from damage and reduced efficiency due to waterborne debris such as sand, seaweed, grass and pebbles that are sucked into the cooling system. Oversize "Super Strainer" mounts easily inline with cooling system and features clear filter cup for quick visual inspection. Kit includes large high quality marine strainer, stainless steel mounting bracket and a selection of adapter fitti...
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Our cool running Thermostat Kit reduces the operating temperature of your modified 4-TEC® engine by 30°F for maximum reliability and performance. Kit includes replacement thremostat, billet coolant inlet flange, stock thermostat removal tool, Oetiker® clamps, Oetiker® pliers and detailed installation instructions. Fits all 255, 215, 185, 155 and 130 horsepower 4-TEC engines. NOTE: Thermostat housing (shown above) not included. Replacement coo...
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Our forged racing pistons deliver maximum reliability and performance in high boost & turbo applications. CP Sea Doo piston kit includes piston, ring set, piston pin & circlips
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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...
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Our lightweight connecting rods improve the reliability and performance of turbocharged and supercharged watercraft engines. Manufactured to our specifications by Carrillo Industries, these rods are forged from an ultra high-strength alloy and rated to 500+ horsepower. Unique H-beam design is substantially stronger and lighter than OEM equipment, allowing your engine to rev quicker and hold up to the punishing demands of high boost applications. ...
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Our 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.Valve Compression Tool also available.   Fits: 2004 SEA-DOO GTX SUPERCHARGED (185) 2005 SEA-DOO GTX SUPERCHARGED (185) 2005 SEA-DO...
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Our Pro-Series Cylinder Head Gaskets were developed to withstand severe heat & pressure generated by high-boost and high horsepower applications delivering maximum reliability to your racing engine. Key Benefits Include: Three layer stainless construction for durability & corrosion resistance. Viton coated & embossed surfaces for maximum sealing between head and cylinder block. Unique design promotes even torque load across...
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Our overhead Valve Compression Tool allows easy removal of valve springs and keepers without removing cylinder head. Includes compression adapter to pressurize cylinder keeping valves in place during removal of stock springs and keepers.
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Our ultra high strength cylinder head stud kit is essential equipment when upgrading internal components on your high boost Yamaha engine. Precision machined from premium grade 8740 alloy and heat treated to exacting tolerances, these studs dramatically increase reliability & ease of maintenance. Key Benefits Include: Superior material & heat treat process provide 10X better fatigue strength than OEM bolts. Studs provide impr...
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Adds 12 peak horsepower and increased torque throughout the rpm range. High strength billet racing cam is precision ground from 8620 billet steel and heat treated for maximum strength. Lighter than OEM cam for quicker acceleration and reduced valve train & cam chain fatigue. Cams require the use of 2009-2012 style cam gears. Requires additional customer ECU tuning for proper calibration.
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High strength bolt kit directly replaces OEM flywheel bolts that are prone to shearing off on modified Sea-Doo 1503cc and Yamaha 1.8 liter engines. Superior materials and design improve durability and reliability. A must for endurance, closed course and HydroDrag race craft! Sold as a set of 6. Details Shipping Details Item #: RY10840-FWB Brand: RIVA Racing 2008 SEA-DOO GTX 215 2008 SEA-DOO RXP-X 255 2008...
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RIVA High Performance Valve Kits are engineered to improve reliability and performance in high-boost supercharged & turbocharged engines. Intake valves are built from high grade EV-8 (24-4N) stainless that is extremely resistant to corrosion. Exhaust valves are built from inconel alloy (IN-751) that is highly resistant to heat damage. Valve heads have been redesigned for increased air flow and durability. Valve stems feature hard-chrome plating f...
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Our Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 12 lightweight, precision-machined titanium valve retainers and 6 OE rocker arm shaft bolts that must be replaced during installation. A must for IJSBA & APBA Stock Class race craft.   Applications: All Sea-Doo 4-TEC Engines. NOTE: For modified engines (Stage 3 & above) we recommend the complet...
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Designed for use with aftermarket Open Loop Cooling Kits running RIVA cooling line configuration. Features include: Billet aluminum housing. Stainless steel hardware. 160° F Fail Safe® Thermostat (locks open in case of overheat condition). Double o-ring seals.
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