Since 1952
America's Oldest Speed Shop ®
Speedway Motors Bill Smith

Dynatech SuperMaxx 2007-Up Shelby GT 500 Exhaust System


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Please NOTE the following about this product:

  • This item is sold as a pair.
  • This product is discontinued.



Q & A

What's in the Box

Gain up to 34 HP and 15 Ft. Lbs. over the factory exhaust system! Dynatech® SuperMaxx stainless steel exhaust systems are engineered to give your car winning performance both on and off the track.  Designed to be a direct replacement fit for restrictive factory exhaust and catalytic converter systems, these systems are a great way to get that extra power you are looking for.

Intermediate pipes are available with or without cats. For ceramic coating, add Dynatech® Ceramic Coating (at right) to your cart.


  1. These products are intended for racing and off-road applications. Not legal for sale or use in the state of California, nor in states which have adopted California emissions standards.


  • Primary Tube Size: 1-7/8"
  • Collector Size: 3"
  • System Tube Size: 3"
  • Material: T-304 Stainless Steel
  • OBD II Compliant: Yes
  • Hardware Included: Gaskets, Bolts, O2 Extensions
  • Fit: Direct Bolt-Up to any factory or aftermarket cat back


  • 3/8" laser-cut and machine-ground flanges for a long-lasting, tight seal
  • Computer-designed collectors for maximum air flow
  • Low-profile four-bolt collectors
  • "OEM-style" triple-layer stainless steel gaskets included for long-term, leak-free service

You may also be interested in:

Thermo Tec 11021 Header Wrap, 1 Inch x 50 Ft, Black Color

Thermo-Tec® header wrap keeps heat in the exhaust stream.  This increases exhaust velocity and engine efficiency, as well as reducing  under-hood temperature up to 70%.  Available in three different roll sizes.

Installation Instructions (PDF)

Typical Small Block Chevy Headers Need:

  • (2)  704-11002/11022 Wraps
  • (1)  704-13101 Strap Kit
  • (2)  70412001 High Heat Coatings

Typical Big Block Chevy and 180 Degree Headers Need:

  • (2-3)  704-11002/11022 Wraps
  • (1)     704-13101 Strap Kit
  • (2-3)  704-12001 High Heat Coatings


DEi 010126 Titanium Exhaust Wrap, 1 Inch x 50 Ft Roll

This exhaust wrap by Design Engineering, Inc. is made from pulverized lava rock and can stand 1800 degrees directly or 2500 degrees indirectly. Perfect for those extreme conditions and you don't need to use any spray-on coatings with it. Resists abrasion for longer life.

  • Constructed from pulverized lava rock - titanium-like strength and toughness
  • Reduces underhood temps resulting in cooler air intake for improved performance 
  • Able to handle 25% more heat than conventional wrap
  • Capable of handling more heat than any other wrap found in the market today
  • It’s pliable - no need to wet the wrap when wrapping tubing
  • Will not shrink
  • More resistant to temperature/vibration break-down, abrasions, chemical and hot oil spills
  • Very cool carbon fiber look

Works best on Stainless Steel headers.

Instruction Sheet (PDF)

Frequently Asked Questions (PDF)

Dynatech® 90-00100 Ceramic Coating Option, Header Set

Great option for increasing the life, horsepower and appearance of your new Dynatech® headers! All headers purchased with this option are coated inside and outside. The coating will significantly reduce the underhood temperature of your car, which translates into a small horsepower gain, not to mention it it makes those headers look great! 

Note: This option can only be ordered in conjunction with Factory Shipped Dynatech® products.