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American Racing 1 3/4 x 3 Headers w/ 3 Race X-Pipe Ford Mustang GT500 5.4L 07-10


American Racing Headers

Model #MTSH5-07134300LSNC

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This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver here.

American Racing Headers is a great example of what culminates when highly skilled fabricators, with a complete understanding of motorsports and the science behind the parts they create, come together to take on a new world of high performance.

Taking the "Bull by the Horns" approach, American Racing Headers was formed to prove that superior quality and outstanding performance can and will be the keys to success. A staff with 40 plus years of combined high performance exhaust fabrication experience see to it that only the finest components and craftsmanship go into every header system.

Arguably the most amazing hot rod to ever exit a Ford factory, the Shelby GT500 and contains a mountain of horsepower just waiting to be unleashed. American Racing Headers bolt-in long tube header systems can increase power and torque by as much as 40 RWHP and 40 RWTQ.

Like all American Racing Headers systems, construction is all 304 Stainless Steel, flanges are 3/8" laser cut and collectors are merge style and incorporate scavenger spikes. 3" X-Pipe includes catalytic converter deletes. 1 3/4" primaries come standard, however for applications with large amounts of boost, 1 7/8" primaries are recommended.


  • Stainless Steel Construction
  • 1 3/4" Primaries
  • 3" Merge Collectors
  • 3" X-Pipe w/o Cats
  • Limited Lifetime Warranty

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Vehicle Engine Notes
Ford Mustang GT500

Items can be returned within 60 days of receipt. If items were shipped in error or damaged in transit, American Racing Headers and Exhaust will pay for all return charges, and waive any restocking fees. However, if American Racing Headers and Exhaust shipped your order per your specifications but you would still like to return items, return shipping charges are the customer's responsibility, and a 20% re-stocking fee will apply. No refunds will be made until returns pass inspection. If the ARH system has been purchased through a dealer, please contact that dealer for their returns policy. If there are any problems during installation please contact ARH immediately, no modifications should be done without consulting an ARH representative. Any unauthorized modifications will void the warranty. Please contact us for a Return Authorization Number (RMA) and shipping instructions. For more information on our limited warranty please call 631-608-1986.

Since sound is subjective, we do not warranty for sound. Please do not return your American Racing Headers© product if you do not like the sound level. There are several ways to adjust the sound level. Please call for more information if needed.

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