Stainless Works Long Tube Header Kit (GT115HCAT) - 2011-14 Shelby GT500 5.8L

Unlock the full potential of your 2011–2014 Shelby GT500 with the Stainless Works Long Tube Header Kit. Designed, engineered, and built in the USA, these headers deliver the perfect blend of performance, quality, and sound. Featuring 1-7/8” mandrel-bent primary tubes, this system increases exhaust flow, boosts horsepower, and enhances throttle response while maintaining precise fitment with the factory exhaust.

Each header is handcrafted from premium 304 stainless steel with CNC mandrel bends, 3/8” thick flanges, and 3” slip-fit collectors with integrated merge spikes for maximum flow and efficiency. The kit includes high-flow catalytic converters and connects seamlessly to the factory exhaust system through an H-pipe or X-pipe crossover. Built for strength and longevity, every system is fully TIG welded at Stainless Works’ state-of-the-art facility in Streetsboro, Ohio, and backed by a lifetime warranty on materials and craftsmanship.

Features

• High-flow catalytic converters for increased performance and clean exhaust flow
• Choice of H-pipe or X-pipe crossover for tailored sound and balance
• 1-7/8” mandrel-bent primary tubes for unrestricted exhaust flow
• 304 stainless steel construction for maximum durability and corrosion resistance
• 3” slip-fit collectors with merge spikes for smooth, efficient exhaust flow
• 3/8” thick flanges for a secure, leak-free seal
• Fully TIG welded for precision, strength, and longevity
• Designed to fit 2011–2014 Shelby GT500 models with stock exhaust only
• Lifetime warranty on materials and craftsmanship

Fitment

- 2011 Ford Shelby GT500 5.4L / 5.8L with Stock Exhaust
- 2012 Ford Shelby GT500 5.4L / 5.8L with Stock Exhaust
- 2013 Ford Shelby GT500 5.8L with Stock Exhaust
- 2014 Ford Shelby GT500 5.8L with Stock Exhaust

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