Granatelli Motor Sports - 4.0-Inch (102mm) Slip-Fit Electronic Exhaust Cutouts

The 4.0-inch slip-fit stainless steel electronic exhaust cutouts from Granatelli Motor Sports are the largest diameter offering in the round slip-fit stainless steel category. These cutouts are built exclusively for the most extreme performance applications! That includes builds running full 4-inch exhaust systems, including heavily modified big block engines, extreme turbocharged and supercharged applications, purpose-built race vehicles, and high-horsepower diesel performance trucks. Any situation where your diesel engine needs the most flow it can get.

 

Only Granatelli Electronic Exhaust Cutouts have the One-Touch Smart Control, giving the driver complete control over exhaust sound and flow from inside the vehicle. You can quickly switch  between muffled street manners and full open, unrestricted performance exhaust at the press of a rocker switch. No permanent changes to your exhaust system are required!

 

Every part in this cutout is designed for maximum performance. The 4.0-inch slip-fit stainless steel cutout body is CNC-machined from 6061 aircraft-grade aluminum, which is known for being strong, sturdy, and able to withstand intense performance. The stainless steel butterfly plates and blade shafts are corrosion-resistant and can handle high temperatures.

 

Granatelli Motor Sports has 75 years of experience in racing and product development. Contact our live technical support at 1-805-486-6644 Monday through Friday, 8 AM to 5 PM PST.