Porsche 991 911 Turbo S Exhaust

Thomson Speed Factory Porsche 991 Turbo S Exhaust System

Bring your 991 Turbo S to life with the Thomson Speed Factory hand-built 3” stainless steel exhaust system, engineered to deliver unmatched sound, performance, and style.

Each system is TIG-welded from high-grade 304 stainless steel, running a true 3-inch diameter from the turbos to the tips for maximum flow and response. Our precision-built X-pipe design merges exhaust flow for a smoother, more refined tone that accentuates the turbo whistle and amplifies the signature Porsche note.

The system features angled slash-cut tips for an aggressive, motorsport-inspired look that complements the 991’s design perfectly. With significant weight savings and a completely unrestricted flow path, this exhaust unleashes the full potential of your Turbo S—both in sound and performance.

Key Features

• Hand-built in-house at Thomson Speed Factory (USA)

• Constructed from premium 304 stainless steel

• Full 3-inch tubing from turbochargers to tips

• TIG-welded X-pipe for clean tone and enhanced turbo sound

• Angled slash tips for an aggressive, race-inspired look

• Significant weight savings over the factory system

• Engineered for perfect fitment and reliability

Sound & Performance

This system delivers a clean, high-energy exhaust note that balances aggression with refinement. The X-pipe design ensures a crisp tone, while the free-flowing layout brings out that signature Porsche turbo whistle that enthusiasts love.

Off-Road Use Disclaimer

 For Off-Road Use Only

This product eliminates factory catalytic converters and is not legal for use on public highways or streets. It is designed exclusively for closed-course competition, racing, or off-road vehicles. Installation or use on public roads may violate federal and state emissions laws.

By purchasing and installing this product, the customer acknowledges and agrees to use it in compliance with all local, state, and federal regulations.

Lifetime Warranty

All TSF-built products are covered by our limited lifetime warranty—though you’ll likely never need it. Our exhaust systems are built to handle extreme performance and outlast your vehicle.