Yeah, yeah, we know. Miss Thrust Innovations 2015 contest winner Heidi isn’t really doing a very good job displaying the new Thrust Innovations Performance Stage Kits for Kawasaki Ultra 250X, 260X and 300X JetSkis, but since we couldn’t dig up any, we thought she was a suitable substitute.
But for the Thrust Performance kits, we’re going to focus our energies on the ’11-’13 Kawasaki Ultra 300X package, as it is the newest of the three: While the stock 300X wasn’t exactly perfect, it was a strong and impressive improvement over the previous 250X and 260X models, with a top speed of 66 MPH @ 7,500 RPM. With Thrust Innovations’ Stage I kit, that number jumps up to an impressive 73 MPH @ 7,900 RPM (as tested with a 1/3 tank of fuel). But how is that possible, you ask? Here’s how:
The kit (priced at $1,775) comes with all RIVA Racing performance parts, ensuring that the pieces you’re installing on your Kawasaki are made form the best in the business and have been thoroughly tested.
Consisting of a RIVA Performance Power Filter (which delivers an increase in ingested air volume via a large 4″ diameter intake duct and oversized K&N filter element); a RIVA Speed Control Override Module (to remove the restrictive speed limiter system programmed into the ECU); a RIVA Pro-Series Water Box; RIVA Top-Loader Intake Grate; and a RIVA Performance Ride Plate, which provides quicker planing and increased top speed by trimming nose up for reduced drag.
Lastly, a pair of RIVA Pro-Series Sponsons to dramatically improve the handling through superior blade and backing plate design, concludes the kit. And as Thrust notes, “after extensive testing of aftermarket impellers we have determined that the stock impeller provides the maximum performance for both stock & Stage I applications. We will report updates to our impeller recommendation at such time as we find an aftermarket advantage to the stock impeller.”