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Granatelli Motorsports

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

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

sku: 8XUNM | mpn: 307540
$355.08
$355.08
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Low stock: 2 left

Emissions

⚠️ RACING/COMPETITION Use Only

California: Non-compliant parts may be used only on designated closed-course racing vehicles that are never registered for highway use.

Other: Please consult your local statutes and ordinances to ensure compliance with regional emissions standards.

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“From Quiet Cruising to Full Throttle: Command Your Exhaust Sound.”

  • Huge 4.0″ ID for maximum exhaust flow
  • Weld-in stainless design built for durability
  • Smart motor for instant open/close response

Unleash the sound. Upgrade your ride. BUY NOW!

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.

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