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Yamaha GP1800 Parts

Full list of performance parts available for your Yamaha GP1800. Please email us with questions.

Check out our GP1800 build series!




Let us know if you have any questions or concerns. We proudly price match advertised prices!

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  • Yamaha GP1800/SVHO/SHO/HO 1800 Spark Plug

    Yamaha GP1800/SVHO/SHO/HO replacement spark plug. (requires 4)
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    $7.99

  • WORX Yamaha GP1800 Intake Grate WR246

    If you're looking to get the most out of your Yamaha GP1800, the WORX Intake Grate is a must have. From rec riders to racers, this intake grate provides noticeable performance enhancements. Designed for the ultimate hook-up and handling, this intake grate combats cavitation in choppy to rough water conditions, maximises acceleration and even adds top end speed. Stability and cornering ability are also improved, this is a huge benefit when tow...
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    $245.00

  • RIVA Yamaha GP1800 / VXR / VXS Performance Ride Plate

    Our new GP1800 Ride Plate delivers the perfect balance of increased top speed and improved handling in a variety of water conditions. Its race bred design features deep channels for improved acceleration and traction in turns. Provides excellent straightline stability at high speed with reduced porposing. Easy bolt-on installation accepts OEM speedo sensor.Key Features: Superior handling performance Improved top speed & acceleration Redu...
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    $249.99

  • RIVA / V-TECH Maptuner X Tune Yamaha Bundle

    This is a bundle of the Yamaha tuning credit and the V-Tech maptuner x required to load the tune on your ski, Includes cable needed! This tuner allows you to tune your ski on your own! No more sending in to be service every time you need a different map for your ski. This will literally save hundreds of dollars and hours of shipping time! Works on the GP1800! TR 1 models include: 2016 YAMAHA V12016 YAMAHA V1 SPORT2016 YAMAHA VX2016 YAMAHA VX ...
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    Regular Price: $1,015.00

    Special Price $935.00

  • Impeller Shaft Tool SHO/HO/FZR/FZS/GP1800

    Drive shaft holder tool required for changing impeller.
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    $28.95

  • RIVA Yamaha GP1800/VXR/VXS Top-Loader Intake Grate

    ITEM AVAILABLE MARCH 2017 Our revolutionary new intake grate for GP1800, VXR and VXS delivers the ultimate in speed, hook up & strength. All new design features oversized top loader wing and optimized inlet ramp for closed course and offshore racing. Bulletproof stainless steel construction makes this grate virtually indestructible and eliminates the need for additional restrictive support bars. Race bred design significantly reduces cavitat...
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    $299.99

  • RIVA Yamaha SVHO/SHO/HO/GP1800 Intake Manifold Upgrade Kit

    Our Intake Manifold Upgrade Kit enables your SHO engine to produce more horsepower by delivering increased air flow and boost pressure (+1lb). Precision tapered billet sleeve directly replaces restrictive mesh element in intake manifold. Provides improved low end punch and mid range pull through quick & easy installation. Includes detailed installation instructions. NOTE: Our testing has determined the stock ECU will compensate for the incre...
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    $39.95

  • RIVA Yamaha RIDE Grip Installation Kit

    The Riva Yamaha Grip Installation Kit allow easy installation of aftermarket grips to replace the original oversized grips. Billet fitting mounts securely to ends of original handlebars via machined locking feature. Includes special locking clamps to secure 130mm ODI grips. Allows installation of popular ODI 130mm grips on Yamaha RIDE models Precision machined from 6063 billet aluminum Anodized to prevent corrosion Sold as a pair/Grips so...
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    $59.95

  • RIVA Yamaha SVHO/SHO Performance Blow-off Valve Kit

    Our Performance Blow-off Valve Kit improves supercharger reliability and performance by relieving unwanted pressure during off-throttle operation. Reduces supercharger clutch & gear wear and eliminates heat soak in discharge tube. High-strength silicone hose with integrated HKS valve installs easily in place of OEM elbow joint. Includes high quality HKS Super SQV (Super Sequential Blow-off Valve) that features unique sequential valve structure an...
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    $379.95

  • RIVA Yamaha GP1800 Power Filter Kit

    Our Power Filter feeds your supercharged 'SVHO' engine a steady diet of cool air delivering greatly improved acceleration and rpm. Replaces restrictive stock air box with a high-volume, precision-formed intake duct that attaches to the supercharger via a large 4 adapter. Cool air enters the system via an oversized K&N filter element. Includes water-repellent pre-filter and detailed installation instructions.
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    $299.95

  • WORX Yamaha 1.8L Fuel Pressure Regulator

    In tank replacement increases fuel pressure approx 10psi Cost effective alternative to External fuel regulator Ideal for Low boost applications and reflashed/ aftermarket ECU
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    $99.00

  • TTO Tachometer

    The TTO Tach is water resistant and will monitor two and four stroke single and multiple cylinder applications to 10,000 rpm within 10rpm accuracy. Functions including: peak rpm memory, hour meter, rpm recall and constant rpm display.
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    $59.95

  • WORX Yamaha GP1800 Sponsons WR552-I

    Dramatically improve your handing with WORX GP1800 Sponsons. These sponsons feature 4 points of adjustment to allow you to customize the handling according to riding conditions. Includes all necessary hardware. Also fits the 2011+ VXR Hulls!
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    $370.00

  • Riva Free Flow Exhaust Kit, GP1800/VXR/VXS

    Replaces the restrictive sound suppression system located between the water box and hull exit on your watercraft. Improves engine performance by reducing back pressure and harmful detonation. Includes mandrel bent aluminum tubing that is powder coated to prevent corrosion, high-temp silicone replacement coupler and installation instructions. Replaces the restrictive sound suppression system located between the water box and hull exit on your wate...
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    $199.99

  • RIVA Yamaha GP1800 Seat Cover

    Cut down on slippage for your Yamaha GP1800! These covers are hand made in the USA with the finest materials including Ballistic Nylons, Ultra-Grade Marine Vinyl, plus Jettrim's exclusive Nada-Hyde, Non-Slip Traction Material.
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    $289.95

  • RIVA Yamaha GP1800/VXR/VXS Pro-Series Steering System

    Introducing the ultimate race proven steering system for the Yamaha GP1800! Fully adjustable design features billet aluminum construction for maximum strength & rigidity. Directly replaces bulky OEM mechanism with a stronger & lighter unit. Delivers a precision feel and the confidence to push your craft to the limit with improved dependability and comfort. Accepts standard 7/8" MX bars and provides adjustable quick-steer feature. K...
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    $599.99

  • RIVA PRO-BAR 32” Runabout Bars

    RIVA PRO-BAR 32” Runabout Handlebars are constructed from a proprietary aluminum alloy that offers maximum strength with reduced vibration. High tech finish and premium features make this the ultimate watercraft bar! Key Features: Made from 7/8”, proprietary, T6 aluminum alloy for superior tensile strength & vibration dampening Cross bar clamps CNC machined from 6061 aluminum and mounted with stainless hardware & thread...
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    $74.95

  • RIVA YAMAHA WATER BOX SVHO/SHO/HO 1.8L

    Developed on our Dyno and tested extensively on the water, this water box features radiused exhaust tubes and end caps for optimum exhaust flow. Unique exhaust baffle will increase the low-end power and mid-range pull of your Yamaha watercraft. Delivers up to 15hp on modified engines along with significant torque gains. High-strength aluminum construction will survive backfires and meltdowns. Powder coated to prevent corrosion. A must for modifie...
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    $419.99

  • ODI Ruffian Lock-On Grips, 130mm, No Flange, Black

    130mm Length Large Raised Pads and Deep Grooves Knurled Surface Pattern for Better Traction No Flange 100% Slip-Free Performance Includes Silver Lock-Jaw Clamps Includes New Snap Cap End Plugs   Ruffian Watercraft grips are designed for optimal control in wet conditions. The grip's narrow diamondized surface pattern provides an excellent gripping system and the Lock-On design offers 100% slip-free performance.
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    $27.95

  • 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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    $19.95

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