Granatelli 2.5" Electric Exhaust Cutout Kit, Mild Steel Slip-Fit – 303525

Granatelli Motor Sports 2.5" Electronic Exhaust Cutout Kit

SKU: 303525

Unleash the Roar or Cruise in Silence—Your Choice

Elevate your driving experience with the Granatelli 2.5" Electronic Exhaust Cutout Kit. Whether you're seeking a stealthy ride or a powerful growl, this kit offers seamless control over your exhaust tone and performance at the touch of a button.

Key Features

• Premium Construction: CNC-machined 6061 aircraft-quality aluminum for durability and heat resistance.
• Smart Technology: “Smart Chip” controlled DC motor with “One Touch” rocker switch operation—no need to hold the switch.
• Stainless Steel Components: Features butterfly plates and blade shafts for long-lasting, corrosion-resistant performance.
• Versatile Installation: V-band clamp allows 360° rotation of turndowns for optimal positioning.
• Stylish Finish: Polished stainless steel turndown with a 45-degree slanted discharge angle.
• Reliable Performance: High-torque gear reduction motor ensures full open and close operation every time.
• Heat-Resistant: Carbon steel drive gears resist extreme exhaust temperatures.
• Complete Kit: Includes hardware, gaskets, wiring harness, switch, and more for a clean, hassle-free install.

Specifications

Why Choose the Granatelli 2.5" Electronic Exhaust Cutout Kit?

This kit is perfect for automotive enthusiasts looking to optimize their vehicle's exhaust flow and performance. Whether you're building a performance street car or want flexible control over your exhaust output, this system delivers professional-grade results. Upgrade your exhaust system today and experience the perfect balance of stealth and power at your fingertips.

Sizing & Fitment

Measure the outside diameter of your exhaust pipe at the mounting point. If it measures 2.5", this kit is the right match. Running a true dual exhaust? Use one cutout per side, or choose the dual 303525D kit. Want a permanent, leak-free install? See the 307525 weld-in version. Daily driver in a wet or salted-road climate? Consider the stainless steel 302525.

Where to Mount It

Mount the cutout at least 18 to 24 inches after the catalytic converters, and away from any O2 sensor. 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 2.5 Inch Exhaust Cutout Guide for choosing the right size and type, mounting and state laws.