Exhaust Cutout Kits

What Is an Exhaust Cutout? Quick Start Guide

An exhaust cutout is a controllable valve that lets you switch your car’s exhaust path between the stock muffler system and a free-flowing straight pipe. With the push of a button, you can enjoy a deep, aggressive sound and improved throttle response—then switch back to quiet mode for daily driving.

The electric exhaust cutout is especially popular thanks to its fast actuation, better sealing, and easy remote control. It’s perfect for those who want dual personality—calm during the week, wild on the weekend.

SPELAB Exhaust Cutout Kits are among the most trusted in the aftermarket space. Available in 2 inch, 2.25 inch, 2.5 inch, and 3 inch exhaust cutout sizes, these kits support various car platforms, from muscle cars and performance sedans to lifted trucks.

For example, a 2016 Dodge Charger R/T with a 5.7L V8 gains deeper exhaust tone, a power boost of 5–8 HP, and reduced backpressure after installing a 3 inch electric exhaust cutout. With the valve closed, it returns to quiet factory settings—ideal for residential driving.

SPELAB offers both weld-on and clamp-on installations, giving users flexible options depending on their setup. The remote is powered by common CR2016 or CR2032 batteries, making maintenance simple and hassle-free.

Whether you're upgrading just the valve or building a full custom exhaust system, SPELAB’s kits integrate seamlessly with aftermarket or OEM setups—enhancing flow, sound, and responsiveness without compromising daily drivability.

How to Choose the Right Exhaust Cutout Size for Your Vehicle

When selecting a kit from the SPELAB Exhaust Cutout Kits lineup, choosing the correct size is essential. A properly matched exhaust cutout ensures better flow, clean installation, and optimal sound performance. The wrong size can lead to leaks, poor fitment, or disappointing results.

SPELAB offers several common electric exhaust cutout sizes:

• 2 inch exhaust cutout – Ideal for small-displacement NA engines like Honda Civic or Toyota Corolla
• 2.25 exhaust cutout – Best for 1.8T–2.5L turbocharged cars like Golf GTI or Subaru WRX
• 2.5 exhaust cutout – Great for mid-size performance engines like 370Z, Toyota Supra, or Lexus IS350
• 3 inch exhaust cutout – Designed for muscle cars and performance trucks such as Mustang GT, Camaro SS, Ram 1500 5.7L HEMI
• 4 inch cutout – Heavy-duty option for diesel trucks and custom builds

For example, a 2021 Camaro SS with a 6.2L V8 typically has a 3-inch factory exhaust, making the 3 inch exhaust cutout a perfect fit with no modification needed. On the other hand, a 2022 Honda Civic Sport 1.5T has a smaller exhaust size, so a 2.25 exhaust cutout would be more appropriate.

All SPELAB Exhaust Cutout Kits include detailed sizing info and vehicle fitment guides. Whether you’re a DIY enthusiast or working with a performance shop, installation is straightforward via weld-on or clamp-on methods.

Pro Tip: Not sure what size your car needs? Measure the outer diameter of your exhaust pipe with a caliper, or contact SPELAB with your vehicle’s year, make, and model for expert recommendations.

Breakdown of the 7 SPELAB Exhaust Cutout Types: Which One Fits You Best?

The SPELAB Exhaust Cutout Kits lineup includes seven unique models, each built to meet different installation needs, performance expectations, and vehicle types. Whether you need a basic 2 inch exhaust cutout or a premium 3 inch electric exhaust cutout, there’s a version for everyone.

Here’s a quick overview of all seven types:

Products	Introduce	Shared by Youtubers
Regular Exhaust Cutouts	A classic, best-selling model with clamp-on or weld-on options. Simple, effective, and budget-friendly.	SPELAB Exhaust Cutout Installation and Test On Mustang GT !!!
4.0" Exhaust Cutout	Built for big builds—ideal for large-diameter systems on diesel trucks or high-horsepower V8s like the Ford F-250 or Ram 3500 Cummins.	SPELAB Exhaust Cutout Installation and Test On Dodge 392 !!!
One-Piece Exhaust Cutout	Fully integrated for easier installs and fewer leaks. Reinforced flange and more precise valve control.	SPELAB Exhaust Cutout Installation and Test On Ram SRT-10 !!!
Be-Cut Pipe Exhaust Cutout	No cutting required—drop-in replacement for the mid-section. Great for lease vehicles or those avoiding permanent modifications (e.g., Honda Civic, Toyota GR86).	SPELAB Exhaust Cutout Installation and Test On 2022 Honda Civic Sport
Vacuum Exhaust Cutout	Waterproof, long-lasting, and reliable. Uses vacuum control instead of electronics—perfect for daily drivers and tough climates.	SPELAB Exhaust Cutout Installation and Test On Camaro Z28 （LsxMatt）
Be-Cut Pipe And Vacuum Exhaust Cutout	Best of both worlds: No-cut installation plus vacuum-controlled valve. Ideal for serious enthusiasts who want convenience and performance.	SPELAB Exhaust Cutout Installation and Test On 1.8T Beetle（Crazy Turbo Noises）
Plum-Shaped Exhaust Cutout	A visually refined option with a unique shape—popular among show car builders and modding purists.	SPELAB Exhaust Cutout Installation and Test On Ram 1500
		SPELAB Exhaust Cutout Installation and Test On Roadmaster Wagon !
		SPELAB Exhaust Cutout Installation and Test On Chevy Silverado

 

 

 

Exhaust Cutout Installation Options: Weld-On, Clamp-On, or No-Cut?

One of the most common questions when selecting from the SPELAB Exhaust Cutout Kits lineup is: Which installation method is best for me? SPELAB supports multiple options—weld-on, clamp-on, and no-cut (Be-Cut)—to suit your technical skills, budget, and long-term goals.

Weld-On Installation

The most secure method—ideal for long-term performance builds. Welded joints won’t loosen over time and offer superior flow. Best suited for large kits like the 3 inch exhaust cutout or 4.0 inch cutout, especially on powerful vehicles like the Ram 1500, Camaro SS, or Mustang GT.
Note: Requires professional tools and welding skills—not beginner-friendly.

Clamp-On Installation

Perfect for those wanting a reversible setup. No welding needed—just bolt the cutout onto your exhaust using U-bolts or V-clamps. Ideal for 2.25 inch and 2.5 inch exhaust cutouts. Quick, easy, and non-permanent—great for leased vehicles or first-time modders.

No-Cut Be-Cut Pipe Design

Exclusive to SPELAB, the Be-Cut Pipe Exhaust Cutout is designed for plug-and-play installation without cutting your factory exhaust. Just swap in the mid-section and bolt it up. Great for owners of cars like the 2022 Honda Civic, Subaru BRZ, or Toyota GR86, where maintaining warranty and OEM condition is important.

Most electric exhaust cutout kits also support hidden wiring setups, allowing you to mount the remote control module discreetly without disrupting your car’s interior aesthetic.

Every SPELAB Exhaust Cutout Kit includes detailed installation notes, compatibility info, and links to install videos, ensuring a smooth process whether you're working in a garage or at home.

Exhaust Cutout Controls: Remote, Hardwired, or Vacuum?

The SPELAB Exhaust Cutout Kits aren't just versatile in size and structure—they also offer flexible control options to match different user preferences. Most electric exhaust cutout models come with remote controls, and some advanced versions support both wired and vacuum control systems.

Wireless Remote Control

This is the most popular option. Once installed, you can open or close the cutout with a simple click, switching between stealth and aggressive modes instantly. SPELAB’s remote systems are highly responsive and work at distances up to 10–30 meters—perfect for sedans, trucks, or show cars.

The remotes use CR2016 ×2 or CR2032 ×1 coin batteries, which are easy to replace and typically last over 12 months. Compact and lightweight, the remote can be clipped to your keychain or stored in the glove box for quick access.

Wired Toggle Switch

For users who prefer tactile control—like track drivers or performance tuners—a wired switch may be a better fit. SPELAB offers optional toggle buttons that can be mounted inside your cabin or dash, giving you hands-on feedback and faster engagement.

Vacuum-Controlled Cutouts

If you drive in wet, snowy, or off-road conditions, vacuum-operated cutouts are a solid option. These cutouts use the engine's vacuum pressure to open and close the valve, eliminating reliance on electrical components and improving reliability.

Some Be-Cut + Vacuum exhaust cutout kits from SPELAB use this hybrid approach for enhanced durability and precise control, making them ideal for heavy-duty or weather-prone use cases.

In summary:

• Remote control is best for daily use and visual simplicity.

• Wired switches are suited for high-frequency toggling or racing setups.

• Vacuum control is ideal for rugged or moisture-prone conditions.

Choose the right setup based on your driving style, environment, and vehicle platform.

Best Exhaust Cutout Setup by Driving Scenario

Different driving styles require different setups. To help you choose the ideal SPELAB Exhaust Cutout Kits, we've divided recommendations into three use cases—each matched with specific electric exhaust cutout types and features.

City Driving (Daily Commuter or Family Car)

Keywords: Low noise, easy install, reversible mod

Recommended Setup:

• 2 inch or 2.25 inch exhaust cutout

• Be-Cut Pipe or Clamp-On version

• Remote or switch-controlled

• Vehicles: Honda Civic, Toyota Camry, Mazda 3, Subaru Impreza

Why it fits: These setups offer a quiet stock experience with the flexibility to go loud when desired. The Be-Cut Pipe Exhaust Cutout is no-cut and reversible—great for leases or warranty-safe builds.

Highway Cruising (Luxury Sedan or Sport SUV)

Recommended Setup:

• 2.5 inch or 3 inch exhaust cutout

• One-Piece or Weld-On design

• Vacuum or hybrid control system

• Vehicles: Dodge Charger, Ford Edge ST, Lexus IS350, Audi S4

Why it fits: On long drives, stable exhaust flow matters. The One-Piece electric exhaust cutout reduces vibration and leak points. Vacuum-controlled systems excel in long-term reliability and weather resistance.

Track/Weekend Warrior (Modified Performance Cars)

Recommended Setup:

• 3 inch or 4.0 inch exhaust cutout

• Weld-On with heavy-duty valve

• Dual control: wired switch + remote

• Vehicles: Mustang GT, Camaro SS, WRX STI, Ram 1500, Silverado 6.2L

Why it fits: Track builds need quick throttle response and open flow. A big-bore electric exhaust cutout dramatically reduces backpressure, sounds amazing, and unleashes full power at high RPM.

Pro Tip: For areas with noise restrictions, keep your cutout closed while driving in the city. SPELAB Exhaust Cutout Kits let you switch modes on demand to stay legal and practical.

SPELAB Perks & Support Highlights

• Every SPELAB Exhaust Cutout Kit includes a step-by-step installation guide and wiring diagram—even beginners can DIY
• Influencer install videos for popular models like Mustang GT, Camaro SS, Civic Sport, and more
• Worldwide shipping with U.S. local warehouses and international fulfillment—most orders ship within 72 hours
• SPELAB members get exclusive discounts, loyalty rewards, and early access to product drops
• All cutouts come with a 180-day warranty, with replacement available for quality-related issues
• Live tech support team is available 24/7 for fitment help, install tips, or returns

FAQ

Q1: Which vehicles are compatible with SPELAB Exhaust Cutout Kits?
A1: Most popular performance vehicles from the U.S., Japan, and Europe. Sizes include 2", 2.25", 2.5", 3", and 4.0", fitting models like Camaro, Mustang, Civic, Ram 1500, Silverado, and more.

Q2: Are exhaust cutouts legal to use on public roads?
A2: In most areas, cutouts should remain closed during normal driving. Open-mode is typically for off-road or track use. Remote/Toggle control helps users stay compliant.

Q3: How long do the remote batteries last?
A3: The remote uses CR2016 or CR2032 batteries that typically last over 12 months. Batteries are easy to replace and readily available.

Q4: Can I install the kit myself if I don’t weld?
A4: Absolutely. Choose the Clamp-On or Be-Cut Pipe version for no-weld, no-cut installation. With SPELAB’s detailed guides and videos, DIY is totally achievable.

Q5: Is there a return policy?
A5: Yes—SPELAB offers a 30-day no-questions-asked return policy. As long as the product is unused and in original condition, you can return or exchange it.