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RIVA FZ Stage 2 Engine Kit
FZR/FZS Riva Stage 2 Engine Kit

Kit Performance Data

67 MPH @ 7,500 RPM
Stage I Kit
70~71 MPH @ 7,600 RPM
Stage II Engine Kit
260 HP @ 7,600 RPM
Stage III Kit
80+ MPH @ 8,300 RPM
NOTE: All testing was performed with 1/3 tank of fuel; trim in neutral position.

Parts Price Total: $2,707.50
Price if Purchased as Kit: $2,568.00
You save $139.50!
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FZR Supercharger Impellers
Riva High-Boost Supercharger Impeller, FZR, FZS, FX-SHO
Produces 16psi @ 8,000rpm

Our Price: $599.95
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Yamaha FXSHO Fuel Pressure Regulator Kit
RIVA FX-SHO FZR FZS Fuel Pressure Regulator Kit

Our Fuel Pressure Regulator Kit provides the precision pressure control necessary to compliment aftermarket ECU applications on the 'SHO' engine. Kit is fully assembled & mounts securely on top of fuel tank via sturdy aluminum 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 that is routed through supplied rubber fuel tank cap. Includes integrated liquid-filled pressure gauge and billet Fuel Pressure Regulator Block-Off necessary for removal of stock fuel pressure regulator in fuel tank.

Key Benefits Include:
Precision fuel pressure control with optional rising rate function.
High quality stainless steel liquid-filled pressure gage.
Large 3/8 fuel return line.
Includes billet Fuel Pressure Regulator Block-Off.
Easy bolt-on installation with OEM fuel connectors.
Includes complete installation instructions & tuning guide.

Our Price: $474.95
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FXSHO FZR FZS Performance Blow-off Valve Kit
RIVA FX-SHO/FZR/FZS Performance Blow-off Valve Kit
Riva 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 and a differential pressure control system, allowing for a broad operation boost range. Also includes vacuum line and fittings necessary for installation on SHO engine. A simple and cost effective upgrade for both stock and modified engines.

Our Price: $379.95
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FZS Power Filter
Riva Power Filter Kit, YAM FZR/FZS/FX-SHO
Riva Power Filter feeds your 1.8L Supercharged 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 waterrepellent pre-filter and detailed installastion instructions

Our Price: $299.95
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FZR Intercooler Upgrade Kit
RIVA FX-SHO/FZ OEM Intercooler Upgrade Kit
The RIVA OEM Intercooler Upgrade Kit delivers a huge performance gain to your stock intercooler system. This cost efficient upgrade kit features billet aluminum spacers that increase the end tank capacity & water flow in and out of OEM intercooler.

Our Price: $249.95
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RIVA Racing Boost Clamp
RIVA Racing Boost Clamp FX-SHO/FZ
RIVA Racing - Yamaha SHO FZ Boost Clamp
The Riva Boost Clamp will allow you to run up to 17psi of boost pressure in your Yamaha SHO engine when used with RIVA Fuel Pressure Regulator Kit and stock ECU. Device controls communication between stock MAP sensor and stock ECU to allow for higher boost levels and more power. The Boost Clamp is an integral part of RIVA Stage 2 SHO Engine Kit producing 260hp when combined with our recommended components. Installs quickly & easily with integrated waterproof connectors.

Our Price: $199.95
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Yamaha FZR Free Flow Exhaust Kit
RIVA FZR FZS FXSHO Free Flow Exhaust Kit
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.
Fits Models FX SHO FZR FZS 2009 FX HO

Our Price: $199.95
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Riva Engine Cooling Upgrade Kit - Yamaha SHO/FZ
Riva Engine Cooling Upgrade Kit - Yamaha SHO/FZ
Riva Engine Cooling Upgrade Kit - Use with RY17040-ICUK
The RIVA Engine Cooling Upgrade Kit delivers 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 all necessary water lines, hardware, fittings and detailed installation instructions. Designed for use with RIVA OEM Intercooler Upgrade Kit.

Our Price: $149.95
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RIVA FZR FZS SHO Intake Manifold Upgrade Kit
RIVA FZR/FZS/SHO 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 increased boost provided by our Intake Manifold Upgrade Kit.

Our Price: $39.95
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FXSHO Engine Breather Kit
RIVA Engine Breather Upgrade Kit FXSHO FZR FZS

Easy to install Engine Breather Upgrade Kit eliminates power-robbing crankcase emissions from your engine's air intake. Increases horsepower by removing the engine's requirement to burn relatively non-combustible oil. Also improves intercooler efficiency by preventing the oil sludge coating that lowers thermal efficiency. Easy installation retains highly efficient OEM air/oil separator system. Kit includes pre-formed hose with attached K&N filter along with all necessary hardware & instructions.

Our Price: $28.95
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