Granatelli Motor Sports Electronic Exhaust Cutout Kit 307540K - Stainless Steel Weld-In - 4.00"

Dominate the Road—4″ Dual Cutout Command

SKU: 307540K

Take control of your sound and flow with the Granatelli Dual 4.0″ Stainless Steel Electronic Exhaust Cutout Kit. With two massive 4″ valves, CNC-machined components, and polished stainless turndowns, you get instant access to raw power and authority—while enjoying quiet cruising when desired.

Electronic Exhaust Cutout Kit Key Features:

• Heavy-Duty Build: CNC-machined 6061 aluminum motor bodies paired with rugged stainless steel cutouts and shafts
• Smart-Chip One‑Touch Control: Flip the rocker once—motors auto-stop at full open/close to protect internal gears
• 360° Adjustable Turndowns: Polished 45° stainless exits rotate via V-band clamps for perfect alignment
• High-Torque Performance: DC gear‑reduction motors with heat-resistant carbon steel gears ensure full-cycle reliability
• Fully Sealed Durability: Internal and external components are sealed for weather resistance and long life
• Complete Weld‑In Kit: Includes dual cutouts, Y-pipes, switches, wiring, gaskets, clamps, hardware—ready to install

Specs Snapshot

• Cutout Diameter: 4.0″ (102 mm)
• Material: Stainless steel cutouts & turndowns; CNC 6061 aluminum motor bodies
• Exhaust Tip: Polished stainless, 45° angle, 360° adjustable
• Motor: High-torque DC with carbon steel gears and Smart-Chip auto-stop
• Fitment: Universal weld-in dual kit (Y-pipe included)
• Included: All hardware, gaskets, wiring harnesses, rocker switches

Built for Power, Designed for Control

Whether you're ripping down the quarter mile or cruising to a car show, this 4″ dual cutout delivers booming performance on demand and stealth on standby. Rugged, refined, and fully equipped—this is your exhaust’s next big upgrade.

Key Features & Benefits

• Application-focused Granatelli Motor Sports design
• Built for dependable performance and service
• Designed for enthusiasts, professional installers, and performance builds

Fitment & Installation

Confirm the part number, vehicle or engine application, dimensions, and supporting components before installation. Modified vehicles may require additional clearance, fabrication, calibration, or related hardware depending on the combination.

Frequently Asked Questions

What does an electronic exhaust cutout do?
It gives the driver control over the exhaust path, allowing the system to be opened or closed as the application requires.

Will this work on a modified vehicle?
Compatibility depends on the complete vehicle combination. Confirm the listed application and supporting components before installation.

Why Choose Granatelli Motor Sports?

Granatelli Motor Sports develops performance components for real-world street, street/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.