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We have a lot of new ski owners enjoying our sport/hobby of Personal Watercraft Performance which prompted me to make these videos to help you learn about these skis and the available modifications and results of those modifications. I hope you enjoy!

Please remember, that all parts are available right here in the GreenHulk Store at discounted prices. Don't pay more by shopping directly at Riva, R&D, WORX, or other online vendors!!!

Use the discount code: greenhulk and it will save you 10% off the listed price of most RIVA and R&D products, all WORX Racing Products and all Solas Impellers.

GP1800 modifications overview



Supercharger upgrade tips and tricks


Throttle body and intake manifold upgrade (ribbon delete) modifications


Riva Rear Exhaust installed on GP1800... turn up the sound


GP1800 runs 79 mph with only a MaptunerX tune, no other modifications


GP1800 runs 81+ mph with GreenHulk Stage 1 kit


GP1800 runs 86+ mph with GreenHulk Stage 2 kit