Granatelli Exhaust Cutouts: Built for Sound. Engineered to Last.

An exhaust cutout should deliver excitement every time you open it and dependable sealing every time you close it. Beneath a performance vehicle, heat, vibration, moisture and repeated operation, challenge every component.

Looking impressive on a workbench means little if a system cannot perform consistently after installation. Granatelli approaches that challenge with purposeful materials, precision manufacturing, and intelligent controls.

Heat-resistant carbon steel gears provide strength where the motor transfers movement to the valve. Every opening and closing cycle relies on that connection. Granatelli complements its mechanical construction with a Smart-Chip “one-touch” rocker switch incorporating an automatic stop function to protect the gears. Drivers enjoy convenient operation while the controls help protect the mechanism.

Effective sealing is equally important. A quality cutout must close reliably when the driver wants exhaust routed through the mufflers. That makes leakage testing an essential companion to endurance testing. Granatelli is one of the few companies that focuses on this aspect as well. Reported comparative results demonstrate why its durability message extends beyond materials and appearance to the operation of the assembled system.

Practical engineering also means accommodating different vehicles. Granatelli offers multiple diameters, single and dual configurations, as well as clamp-on or weld-in installations. These choices help customers select a system suited to their exhaust layout and installation requirements.

For lowered vehicles, their three-inch oval cutout systems provide a valuable clearance option. Its low-profile configuration helps installers work within limited underbody space, where exhaust positioning can determine whether a component clears an obstacle or makes contact.

Granatelli’s cost-effectiveness comes from delivering engineering, useful features and serviceable components in a complete package. Customers should evaluate value through construction, operation, fit and support throughout ownership. A purchase price tells only part of the story; dependable performance gives that investment its meaning.

The Granatelli name earned recognition by challenging convention and advancing performance. That same spirit guides the company’s exhaust cutouts today: identify the demands, engineer the solution and evaluate the results.

Granatelli Motor Sports exhaust cutouts carry forward a name you can trust for over 80 years—with innovation in their heritage and durability at their core.