Granatelli Motor Sports Electronic Exhaust Cutout Single System; Slip Fit; 4-Inch Stainless Steel (Universal; Some Adaptation May Be Required)

Granatelli 4.0″ Oval Electronic Exhaust Cutout Kit
SKU: 302540
Take total control of your vehicle’s exhaust tone and flow with the Granatelli 4.0″ Oval Electronic Cutout Kit. Designed for high-output builds, this all-in-one system gives you the freedom to run quiet when needed—or rip wide open at the push of a button. Built for those who demand serious performance and bulletproof reliability.

One-Touch Smart Control
Precision CNC-machined 6061 aircraft-grade aluminum housing delivers strength without the weight.
High-torque Smart-Chip DC motor provides smooth, responsive actuation with auto-stop to prevent gear strain or overtravel.

Massive Flow. Deep, Aggressive Sound.
Built for 4.0″ (102 mm) exhaust systems—the oval-profile butterfly valve ensures minimal restriction and full flow when opened.
Includes a 45° polished stainless turndown and oval-to-round adapter, secured with 360° V-band clamps for clockable fitment.

Everything You Need, Right in the Box
Complete install kit: turndown pipe, adapter, V-bands, gaskets, switch, wiring harness, and hardware—no missing pieces, no guesswork.

Engineered to Take Abuse
Corrosion-resistant stainless butterfly valve and shafts stand up to the elements and extreme temps.
A heat-rated carbon-steel gear train is built for high-cycle operation, even under full-load punishment.

Why It Dominates
Flip the switch for stealth mode or wide-open roar—perfect for the street, track, or show.
Heavy-duty construction resists wear and abuse from daily driving or hardcore runs.
Designed for straightforward installation—ideal for pro shops or seasoned DIY builders.

Technical Summary
Feature Specification
Cutout Diameter 4.0″ (102 mm)
Materials CNC 6061 aluminum, stainless steel, carbon-steel gears
Operation One-Touch Smart-Chip + high-torque DC motor
Includes Turndown, adapter, wiring, switch, V-bands, gaskets, hardware
Installation Weld-in (recommended for professionals or experienced DIY builders)

Bottom Line
The Granatelli 4.0″ Oval Electronic Exhaust Cutout Kit – Part #302540 – is built for those who demand full authority over their exhaust. Whether you’re chasing horsepower, turning heads, or just want that deep growl on demand, this is the kit that delivers—no compromises, no excuses.

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