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Upgrade your Yamaha SVHO WaveRunner to bigger boost with the Riva R4 Supercharger Wheel + supporting mods. This upgrade package also requires a valve train upgrade (Titanium Retainer Set or Springs & Retainer Set), aftermarket intercooler (Fizzle Y1000 or Riva PowerCooler), and cold air intake.

Includes:

Riva R4 Supercharger Impeller

Riva Heavy-Duty Upgraded Supercharger Shaft Kit

Riva 3 Bar Map Sensor

Riva Adjustable Fuel Pressure Regulator

Riva Yamaha 1.8L High Volume Fuel Pump Kit

1000cc Injector Kit

Boost Performance for Riva R4 Wheel

8.5 PSI @ 6,000 RPM
11.75 PSI @ 7,000 RPM
16 PSI @ 8,000 RPM
19.5 PSI @ 8,500 RPM
22 PSI @ 9,000 RPM
25 PSI @ 9,500 RPM

For use with Yamaha SVHO models:

2014-2016 Yamaha FZR/FZS SVHO
2014-2023 Yamaha FX SVHO
2017-2018 Yamaha GP1800
2019-2023 Yamaha GP1800R