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Video: Kspeed’s Stealth Whistler & Supersonic Atmospheric Bypass Trumpets

There’s few things more exciting about the ear-splitting whine of a high-spinning supercharger at speed. And while it’s fun to let all the other guys around hear how bad your Ultra 310X may be, there’s a way to both increase the whistle noise from the supercharger at idle with a nice subtle “whoosh” when backing off the throttle under boost, as well as lower intake temperatures and increase available horsepower.

And all of that is possible with Kspeed’s new low profile Stealth Whistler & Supersonic Atmospheric Bypass Trumpets. Made from 100-percent solid PLA 3D-printed filament to keep price low ($35 AUD each), both the Stealth Whistler and the Supersonic reroute the hot waste air out of the system and vent it out into atmosphere. Each kit comes with block off cap for airbox.

The Supersonic trumpet is ideal for higher boost applications, giving off an audible “PSSSSHHTTT” when backing off the throttle, as the Kawasaki scrubs off all of that extra boost. Again, the Supersonic features a hHigher profile, giving off a much louder resonance than the Stealth version. And if you really want to maximize the sound, combine this with Kspeed’s 108mm S/C pulley & Intercooler waste gate block off plate.

https://www.youtube.com/watch?v=696veM-OaNk

Kevin Shaw
Kevin Shawhttps://watercraftjournal.com
Editor-in-Chief – [email protected] Kevin Shaw is a decade-long powersports and automotive journalist whose love for things that go too fast has led him to launching The Watercraft Journal. Almost always found with stained hands and dirt under his fingernails, Kevin has an eye for the technical while keeping a eye out for beautiful photography and a great story.

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