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.
How to Easily Add 40-hp to Your Yamaha FX SHO, FZR or FZS WaveRunner
The Riva/Athena Pro-Series ECU provides a huge performance advantage to the
Yamaha 1.8L Engine delivering over 40-hp to the stock SHO engine. ECU is
fully programmable with either RIVA supplied mapping or user adjustable
parameters. Most calibrations require use 91+ octane pump fuel. Plugs
directly into factory wiring harness via waterproof connectors.
RIVA Yamaha FZR/FZS/FX-SHO Performance Power Filter Kit
Our Power Filter feeds your supercharged 'SHO' 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.
• 2009~11 FZR/FZS & 2008~2011 FX-SHO FX-SHO Cruiser use Part # RY13040.
• 2012 FX-SHO/FX-SHO Cruiser use Part # RY13070.
More info @
Yamaha 1.8L Super High Output Engine Review 2013- By BoatTest.com
For more review, test, performance data, captain reports and more about
yamaha boats / pwcs, go to
Captain John Wenz shows the specifics of the 1.8L Super High Output Marine
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Dustin Farthing's 85-mph Yamaha FX SHO WaveRunner
Yamaha rider Dustin Farthing gives FZ WaveRunner a look at his 85-mph
Yamaha FX SHO. Dustin rode this same WaveRunner to a 1-1-1 finish in the
Florida surf; winning Round 1 of the UWP-IJSBA national tour held in Panama
City Beach, FL.
Yamaha FZR SHO 400HP+
A modified SHO stage 3 conversion 2010 model on normal pump gas (93RON)
and no ecu mods done all home baked! put that in ur pipe !
I roughly measured the acceleration speed at 0 to 82 mph at 3 sec ,mods
done to improve handling stock pump but new Riva Racing impeller.
The 1/8th mile in about 6 seconds !
We have done a hundred hours on this ski and
it still has not given any problems ,build to last!
Yamaha VXR and FZR Drag Race Sea-Doo RXT-X
Video montage of dealers drag racing the Yamaha VXR, Yamaha FZR and Sea-Doo
RXT-X at recent demo event. Lots of fun for the dealers who were very
impressed that the Yamaha VXR (without a Supercharger) consistently beat the Sea-Doo