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  • Riva Yamaha Engine Breather Upgrade Kit 1.8L 2012+

    Easy to install Engine Breather Upgrade Kits eliminate power-robbing crankcase emissions from your engine's air intake. Increases horsepower by removing the engine's requirement to burn relatively non-combustible oil. In forced induction applications intercooler efficiency is improved by preventing the oil sludge coating that lowers thermal efficiency. Kits include K&N filter along with all necessary hardware & detailed installation instr...
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    $38.95

  • RIVA ENGINE COOLING UPGRADE KIT, SVHO, STAGE 1/STOCK

    Key Feature: Improved performance & reliability. Quick and easy to install. Features specially sized drill bits and clamps. Includes detailed installation instructions.   This simple kit improves water flow to Yamaha SVHO engine and intercooler for improved performance & reliability. Greatly reduces loss of power due to "heat fade" on stock and Stage 1 modified craft. Includes tools necessary to enlarg...
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    $21.95

  • Riva Engine Cooling Upgrade Kit for 2014-2019 Yamaha SVHO Skis

    Our Engine Cooling Upgrade 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. Features special billet fitting that injects water into "hot spot" of your engine block where OEM zinc anode is located. Allows addition ...
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    $269.95

  • RIVA FLYWHEEL BOLT UPGRADE KIT (Sea-Doo & Yamaha)

    Fits all Sea-Doo 1503 & 1630 engines, all Yamaha 1.8L engines.The RIVA Flywheel Bolt Upgrade Kit is a high strength bolt kit directly replaces OEM flywheel bolts that are prone to shearing off on modified Sea-Doo 1503/1630 & Yamaha 1.8 liter engines. Superior materials and design improve durability under high stress conditions. An essential upgrade for reliable performance! Sold as a set of 6.Fits: 2022 YAMAHA GP1800R SVHO2022 YAMAHA GP1...
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    $29.95

  • Riva Yamaha/Kawasaki Valve Compression Tool

    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. Fits both Yamaha 1.8L Engines and Kawasaki 1.5L Engines.
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    $259.99

  • RIVA 2020+ Yamaha SVHO Pro-Series Engine Cooling Upgrade Kit

    Our Engine Cooling Upgrade 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. Features special billet fitting that injects water into "hot spot" of your engine block where OEM zinc anode is located. Allows addition of aftermark...
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    $269.95

  • WORX Yamaha 1.8 Engine Cooling Upgrade Kit

    WORX Racing Yamaha 1.8 engine cooling upgrade kit provides the much needed ‘extra cooling’ when modifying your watercraft. Our WORX Racing cooling kit allows the addition of an extra water line from the Jet unit which feeds directly into the Yamaha 1.8 engine block to significantly lower engine temperatures under load to increase engine reliability and performance.   Includes all necessary Fittings, hoses and clamps.Doesn't fit...
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    $120.00

  • Yamaha OEM Oil Pump Gasket – 1.8L Engines

    New Yamaha Genuine OEM replacement oil pump gasket. Required when replacing the supercharger clutch. Used on all Yamaha 1.8L engines.
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    $12.89

  • WORX Yamaha 1.8 Engine Cooling Plate Upgrade

    Our new Yamaha Engine Block Cooling plate allows for up to 3 fittings to be fitted for maximum water flow into you Yamaha 1.8 engine block. Injection points target know engine ‘Hot Spot” and directs initial cooling around No#2 cylinder which is common for detonation and overheating in high boost applications. Billet anodised construction allowing 1,2 or 3 fittings to be installed Fits all 1.8 Yamaha engines (may require o-ring for e...
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    $150.00

  • RIVA Yamaha 1.8 Valve retainer upgrade kit RY19040-SRU

    Titanium Valve Retainer Upgrade Kit increases the reliability of your engine by reducing the possibility of valve float at high rpm. Includes 16 lightweight, precision-machined titanium valve retainers. A must for any modified watercraft.
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    $349.99

  • RIVA Cylinder Head Stud Kit Yamaha 1.8L Engines

    Superior material & heat treat process provide 10X better fatigue strength than OEM bolts. Studs provide improved alignment of cylinder head and gasket for increased reliability and ease of maintenance. More accurate & consistent torque loading provides a more uniform clamping force on head gasket. Helps prevent blown head gaskets and assures optimum engine sealing. Fits all Yamaha 1.8L Engines
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    $279.95

  • RIVA Yamaha 1.8L Engine Cover Billet Knob Set

    These precision machined billet aluminum knobs provide quick and easy access to your engine for maintenance & cleaning. Directly replaces original steel mounting screws securing engine cover that are prone to corrosion. A practical upgrade that installs in minutes and looks awesome! Provides quick & easy access to engine for maintenance and cleaning. Adds a custom look to engine compartment. Easy-turn billet aluminum knobs are mated ...
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    $59.99

  • WR04031-K YAMAHA 1.8 DUAL COOLING PLATE KIT

    Yamaha Dual fitting pump cooling plate kit .Billet anodised plate that fits directly onto OEM Yamaha Jet unit, allowing 2 extra water fittings to be added to your watercrafts cooling system. Also includes 2 x Billet Thru hull fitting for custom cooling kits. Kit Includes: 1 x Dual pump plate and 2 x ½ Inch thru hull fittings For Custom ‘design yourself’ Cooling kits A must for High horsepower applications.
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    $75.00

  • RIVA Yamaha 1.8L Crankcase Main Stud Kits

    Superior material & heat treat process provide 10X better fatigue strength than OEM bolts. Studs provide improved alignment of crankshaft for increased reliability and ease of maintenance. More accurate & consistent torque loading provides a more uniform clamping force on crankshaft. Fits all Yamaha 1.8L engines
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    $199.95

  • Riva Yamaha Engine Breather Upgrade Kit 08-11

    Easy to install Engine Breather Upgrade Kits eliminate power-robbing crankcase emissions from your engine's air intake. Increases horsepower by removing the engine's requirement to burn relatively non-combustible oil. In forced induction applications intercooler efficiency is improved by preventing the oil sludge coating that lowers thermal efficiency. Kits include K&N filter along with all necessary hardware & detailed installation instr...
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    $39.95

  • WR04003 YAMAHA BILLET ENGINE COUPLER

    Billet Drive coupler for Yamaha 1.8 Engine Fits any 1.8 Yamaha Engine Billet construction huge strength upgrade over stock cast unit Utilises OEM rubber coupler A must for any High Horsepower/ Race watercraft
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    $382.00

  • Yamaha Engine Cooling Upgrade Kit Fits all 1.8L H.O. N/A Models

    Our Engine Cooling Upgrade Kits deliver dramatically improved cooling efficiency to engine and oil cooler for increased reliability & performance. Greatly enhances water flow & pressure by replacing restrictive OEM water fittings with high-flow billet fittings and superior routing. Allows the addition of aftermarket ECU's, high-boost compressor wheels and other performance modifications that can increase heat & detonation. Includes al...
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    $359.95

  • Riva Yamaha 701 Cylinder Head Domes (35cc) 81mm

    Made from 6061-T6 billet aluminum and CNC machined ADA Racing girdled cylinder head kits improve performance and reliability. O-ring seals and interchangeable domes allow you to easily change compression as required. Clear anodized for protection against corrosion. Head body, hardware kit, domes and exhaust pipe bracket sold separately.
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    $44.95

  • Riva Yamaha Billet Girdled Cylinder Head Cap 760/701

    Made from 6061-T6 billet aluminum and CNC machined ADA Racing girdled cylinder head kits improve performance and reliability. O-ring seals and interchangeable domes allow you to easily change compression as required. Clear anodized for protection against corrosion. Head body, hardware kit, domes and exhaust pipe bracket sold separately.
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    $210.95

  • WR04006 ARP HEAD STUD KIT ALL YAMAHA 1.8 HO/SHO/SVHO

    Get the party started with our Launch Kit! This combination of parts is the ideal platform for kicking off your modifications and can be easily added to over time to further upgrade your jetski. Designed to extract the best possible potential from your standard watercraft , this level of kit includes parts that any mechanically minded individual should be able to install. 1) WR04020 Air Filter Kit  allows maximum air flow to your ...
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    $249.95

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