Riva 310 HP Kit for the Yamaha 1.8L Supercharged SHO Engine

Riva Motorsports offers an aftermarket kit that increases the horsepower of the Yamaha 1.8L Supercharged SHO Engine to 310HP. The Yamaha SHO engine is available in the Yamaha FZR, FZS, FX Cruiser SHO and FX SHO WaveRunners. Riva's Dave Bamdas explains how the kit works.

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