Shelby Killer Performance was started in 2015 by David an avid performance car enthusiast. Shelby Killer Performance specializes in LSX and 5th gen LT performance parts and accessories. With a five star rating our ultimate passion is making the customer happy.

2016 Shelby KillerPerformance LLC

Quick Time Performance - Low Profile Electric Cutouts - Oval 2.5" or 3"

The low profile cutout designed for vehicles with limited ground clearance.

Our oval electric cutouts feature a new low-profile design for any car or truck that has limited ground clearance. You can have the best of both worlds, they're quiet for the street, and wide open for the strip.

These electrically controlled exhaust valves bolt to standard cutouts, and can be opened and closed from inside the car with the flip of a switch. Using the convenient interior-mounted switch, you can go from stealth quiet to wide-open power.

You control the volume, and you control the flow. Fits any car or truck, from old-school musclecars to high-tech imports.

More Size Options than any other Cutout on the Market!
Don't get left at the light! Whether you need our low profile oval kit or standard round, our kits are available for any application from old school muscle to high tech imports. Sizes range from 2.25", 2.5", 3", 3.5" and 4".

CNC 6061 Aircraft Aluminum Body
Stainless Steel Butterfly Plate & Shaft
6061 Aircraft Aluminum Motor Plate
High Torque DC Gear Driven Motor
Gears Made from High Temp Steel for Long Life
2 position Momentary Toggle Switch
Weather proof wiring harnesses
Weather tight Connectors for Superior Sealing
Made in the USA


Awesome things really do come in small packages!
Whether space is at a premium in your Car or truck or you prefer to retain stock vehicle appearance or just like the 'high tech' aspect of it all. The QTEC Remote Control system is the answer! The transmitter is small enough to install into the tightest spaces. Connect your power/ground and plug in your QTEC's. It's as simple as that! Press and hold the button on the remote switch. Open them wide open, or just a touch. The choice is yours! QTP offers more control options than any other company on the market.
Easy to use push button operation for partial or wide open settings. You retain control of the amount of sound!

Built-In Motor "Over Torque" Protection circuitry

Ultra Compact Size. Transmitter is no larger than a standard Business card leaving you plenty of options for a nice 'hidden' location.

Over 100' Transmitter Range || Easy Installation!

Includes (2) Key Fob Remote Controls with Dog-Snaps

100% Backwards Compatible with our Electronic Cutout Kits.

QTP - Dual Electric Cutouts - Low Profile - 2.5"- 3" Exhaust