Granatelli Motorsports 4.0″ Dual Electronic Exhaust Cutout Kit – Universal Weld-In for Performance Builds
SKU: 307540
Experience Ultimate Exhaust Control with Granatelli’s 4.0″ Dual Electronic Exhaust Cutout Kit. Designed for serious performance enthusiasts, this universal weld-in kit delivers unmatched power, flow, and adjustability. Ideal for turbocharged, supercharged, or large displacement engines, the Granatelli 307540K cutout system lets you switch between aggressive open exhaust and street-legal quiet in seconds—no tools or tuning required.
4-Inch Dual Electronic Exhaust Cutout Kit Key Features
- Massive 4″ Dual Cutouts: Two large 102 mm stainless valves provide maximum flow, ideal for turbocharged, supercharged, or big displacement engines.
- Smart‑Chip “One‑Touch” Control: Quick rocker switch toggles valve fully open or closed automatically—no switch holding required, preventing motor burnout.
- Rugged Motor Assembly: High‑torque DC gear reduction motors with heat‑resistant carbon‑steel gears ensure reliable full-open/full-close cycles every time.
- Premium CNC Construction: Durability meets precision with 6061‑T6 aluminum motor housing and 304 stainless steel shafts and plates.
- Polished 45° Rotating Tips: Dual angled turndown tips not only look sharp but can be adjusted 360° via V‑band clamps for perfect fitment.
- All‑Weather Durability: Fully sealed internals protect against water, dirt, and corrosion.
- Complete Weld‑In Kit: Includes Y‑pipe, wiring harnesses, rocker switch, gaskets, clamps, and hardware—everything needed for pro‑grade installation.
Why You’ll Love It
- Unmatched Sound Versatility: Cruise quietly or unleash aggression—instant sound control tailored to your mood and environment.
- Optimized for Power: Maximizes exhaust flow on demand, reducing backpressure for enhanced horsepower and torque.
- Built for Heavy Duty Use: Made to withstand race-day abuse, heat, and grime while maintaining flawless operation.
- Stylish & Functional: The polished turndowns aren’t just for looks—they’re adjustable to fit any custom exhaust layout.
Tech Snapshot
Specification |
Detail |
Cutout Diameter |
4.0″ (102 mm) |
Materials |
304 Stainless Steel, 6061‑T6 Aluminum |
Valve Operation |
DC Gear Motor with Smart-Chip protection |
Tip Angle |
45° polished stainless, 360° adjustable |
Fitment |
Weld-In; universal (Y-pipe included) |
Hardware Included |
Switch, wiring, gaskets, clamps |
Ideal For
- Muscle cars, hot rods, and race builds need serious flow and control
- Turbocharged or supercharged setups seeking explosive mid-range and top-end power
- Show cars where control over the exhaust note is essential
- Enthusiasts who value a toolbox-ready install kit with premium hardware
The Granatelli 307540K Electronic Exhaust Cutout Kit brings together brute strength, smooth performance, and on-demand sound control in one slick package. If you crave that thunderous tone—yet need the ability to dial it back—this kit offers the perfect balance of intimidation and finesse.
