Granatelli Motor Sports Vacuum/ Pressure Controlled Electronic Exhaust Cutout Systems - Stainless Steel Weld-In 309625

Granatelli Motorsports 309630 3-Inch Vacuum/Pressure-Controlled Electronic Exhaust Cutout

Take control of your vehicle’s exhaust sound and performance with the Granatelli Motorsports 309630 Vacuum/Pressure-Controlled Electronic Exhaust Cutout System. Designed for universal applications with a 3-inch exhaust system, this high-performance cutout allows exhaust gases to bypass the muffler system when opened—creating a more aggressive exhaust note and a less restrictive path for exhaust flow.

Smart-Chip Electronic Motor Control

The Granatelli 309630 uses a high-torque DC gear-reduction motor combined with Smart-Chip electronic control. The one-touch operating design controls the opening and closing cycle without requiring the switch to be held continuously, helping reduce unnecessary stress on the motor and internal gears.

Its vacuum/pressure-controlled design makes the system ideal for custom street-performance, race, turbocharged, and supercharged applications where drivers want responsive exhaust control based on their preferred operating setup.

Durable Performance Construction

The cutout body is CNC-machined from durable 6061 aluminum, while the butterfly plate and shaft use stainless-steel construction for dependable operation in demanding exhaust environments. High-temperature carbon-steel gears provide additional strength, and the polished 304 stainless-steel 45-degree turndown directs exhaust gases away from surrounding vehicle components.

An adjustable V-band connection allows the turndown to rotate up to 360 degrees, giving the installer greater flexibility when positioning the outlet around the vehicle’s chassis, floor, suspension, and other nearby components.

Key Features and Benefits

• Fits universal applications using a 3-inch (76mm) exhaust system
• Vacuum/pressure-controlled electronic exhaust-cutout operation
• Opens a direct exhaust path for a louder, more aggressive exhaust tone
• Helps reduce exhaust restriction when the cutout is open
• Smart-Chip-controlled motor provides convenient one-touch operation
• High-torque DC gear-reduction motor for dependable movement
• CNC-machined 6061 aluminum cutout body
• Stainless-steel butterfly plate and blade shaft
• High-temperature carbon-steel internal gears
• Polished 304 stainless-steel 45-degree turndown
• Adjustable V-band design allows 360-degree turndown positioning
• Includes wiring components, gaskets, and installation hardware

Built for Street and Track Performance

The Granatelli 309630 electronic exhaust cutout is an excellent addition to muscle cars, sports cars, trucks, custom builds, and performance vehicles equipped with naturally aspirated, supercharged, or turbocharged engines. When closed, exhaust gases continue through the vehicle’s standard muffler system. When opened, the cutout creates a shorter and less restrictive exhaust route for aggressive sound and performance-oriented driving.

Because the system uses a universal weld-in installation, it can be incorporated into many factory and aftermarket exhaust configurations. Professional installation is recommended to ensure proper placement, welding, wiring, sealing, heat protection, and ground clearance.

Product Specifications