Granatelli 3" Electric Exhaust Cutout Kit, Stainless Steel Slip-Fit – 302530

Granatelli 3 Inch Electronic Exhaust Cutout Kit

SKU: 302530

Turn Silence into Roar—Instantly

Looking for that extra edge on sound and performance? With the Granatelli 3″ Electronic Exhaust Cutout, you’re in full command of your exhaust note. Flip the switch, unleash the growl—return to stealth just as fast. Perfect for street runs, track days, or any time you crave that thunderous punch.

Why Gearheads Choose This Kit:

• Pro-quality Build
  • CNC-machined 6061 aircraft-grade aluminum body
  • Stainless-steel butterfly plates and shafts
  • High-temp carbon steel drive gears
• Smart & Simple Operation
  • One-touch rocker switch via Smart-Chip control
  • Automatically stops motor to prevent gear stress
• Style & Adjustability
  • Polished stainless-steel turndown with 45° slanted tip
  • 360° rotation via V-band clamp for perfect fitment
• Reliable Every Time
  • High-torque DC gear-reduction motor ensures full open and close action
• Ready to Install
  • Slip-fit 3″ (76 mm) inlet with band clamp
  • Includes gaskets, wiring harness, rocker switch, and all hardware

Specs at a Glance:

• Cutout Diameter: 3″ (76.2 mm)
• Construction: 6061 aluminum body
• Internals: Stainless steel & carbon-steel gears
• Finish: Natural body, polished 45° turndown
• Installation: Clamp-on, with 360° V-band adjustability
• Kit Includes: Full hardware, gaskets, wiring, and switch

Unleash the Beast—or Keep it Civil

Whether you're launching off the line, hitting the highway, or slipping through town under the radar, this cutout gives you the power to shift your exhaust character on the fly. Built tough and engineered smart, it’s the modular performance upgrade every enthusiast craves. Ready to dial in your sound?

Sizing & Fitment

Measure the outside diameter of your exhaust pipe at the mounting point. If it measures 3", this kit is the right match. Running a true dual exhaust? Use one cutout per side, or choose the dual 302530K kit. Want a permanent, leak-free install? See the 307530 weld-in version.

Where to Mount It

Mount the cutout at least 18" from the cylinder head and any O2 sensor, and always after the catalytic converters. Aim the turndown toward the rocker panel, away from fuel and brake lines. For the best sound, mount it after the X-pipe or H-pipe.

Legal Note

Many states, including California, prohibit exhaust cutouts on vehicles driven on public roads. Keep the cutout closed on the street and open it only at sanctioned off-highway events. Never install a cutout upstream of a catalytic converter.

Frequently Asked Questions

Do I have to hold the switch?
No. The Smart-Chip one-touch rocker completes the valve's travel with one tap.

Can I install it myself?
Yes. This kit clamps onto the pipe, so most installs need only basic hand tools and a way to cut the pipe.

What's the warranty?
90 days, with optional 1-, 2- or 3-year extended coverage available at checkout.

Will it add horsepower?
Opening the cutout reduces backpressure. Gains depend on your engine, headers and tune.

New to cutouts? Read our 3 Inch Electric Exhaust Cutout Guide for sizing, installation, dyno results and state laws.

Why Choose Granatelli Motor Sports?

Granatelli Motor Sports develops performance components for real-world street, street/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.

Products received may vary slightly from images due to manufacturing tolerances or supply chain variables.