Granatelli Motor Sports Exhaust Cutout Service Part 307540C

Granatelli 4.0 Inch Electronic Exhaust Cutout

SKU: 307540C

Maximum Exhaust Flow and On-Demand Sound Control

The Granatelli 4.0 Inch (102mm) Electronic Exhaust Cutout is engineered for high-horsepower builds that demand unrestricted exhaust flow and instant control. Designed for large-diameter exhaust systems, this cutout delivers maximum airflow capability, reduced backpressure, and aggressive exhaust sound at the push of a button.

This unit is sold as a cutout-only configuration and is compatible with both 4.0-inch and 3.50-inch exhaust cutout systems, making it a versatile option for custom exhaust builds, turbocharged applications, and race-oriented vehicles.

Built for Extreme Performance Applications

When closed, exhaust gases are routed through the mufflers for controlled, street-friendly operation. When opened, the cutout allows exhaust to exit directly, significantly reducing restriction and enabling the engine to operate at peak efficiency. This results in improved throttle response, increased horsepower potential, and an aggressive exhaust tone suited for track use and competition driving.

The high-torque electronic actuator and precision-machined valve assembly are designed to withstand extreme exhaust temperatures, vibration, and continuous high-load operation, making this cutout ideal for turbocharged, supercharged, and naturally aspirated high-performance engines.

Durable Design for Street and Race Use

Constructed from corrosion-resistant materials with weather-sealed electronics, the Granatelli 4.0 Inch Electronic Exhaust Cutout is built for long-term durability in harsh underbody environments. It integrates easily into custom exhaust systems and supports high-flow performance setups where reliability is critical.

Electronic Exhaust Cutout Key Features:

• Fits 4.0-inch (102mm) exhaust systems
• Also compatible with 3.50-inch cutout systems
• Electronic on-demand exhaust control
• Reduces exhaust backpressure when open
• Supports extreme horsepower applications
• High-torque electronic actuator
• Heat- and corrosion-resistant construction
• Designed for street, strip, and race use

Backed by Granatelli Motor Sports’ performance engineering and motorsports heritage, the Granatelli 4.0 Inch Electronic Exhaust Cutout (SKU: 307540C) delivers uncompromising exhaust control, durability, and airflow for builders who demand the best from their exhaust system.