$595.00 USD
$595.00 USD




































https://youtube.com/shorts/6yUwsiCSsxo?si=ZWb8ZrMTGF3TTLSn
Motorsport-Inspired • Full System • Unmatched Sound
Welcome to the Valvetronic Designs Valved Sport Exhaust System for the Porsche 997 platform. Designed from the ground up, this system transforms your 997 into a truly unique-sounding machine, unlike anything else on the road.
Engineered with our race-bred equal-length headers, free-flow X-pipe, and valved side mufflers, the system delivers an F1-inspired note that unlocks the raw emotion hidden beneath this platform. With valves open, you’ll enjoy an aggressive, motorsport-quality sound experience. With valves closed, volume levels are reduced significantly, eliminating unwanted frequencies for daily comfort.
This is not just an axle-back or partial system—our 997 exhaust package is only sold as a complete setup, ensuring perfect harmony between flow, tone, and functionality.
Free-flow equal-length race headers
Free-flow X-pipe
Valved side mufflers for adjustable sound
Quad exhaust tips
Complete vacuum valve control hardware
Constructed from Anodized Gold T304 Stainless Steel or Blue Burnt Titanium
Vacuum exhaust valves with factory-style operation
21.8 lbs lighter than the factory exhaust (T304 Stainless version)
Mandrel-bent piping for maximum exhaust flow
Precision TIG welds for strength and durability
100% reversible – always able to return to stock
2005–2008 Porsche 997.1 Carrera / Carrera S
2009–2012 Porsche 997.2 Carrera / Carrera S
Also fits convertible models
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$595.00 USD
$595.00 USD
This product can expose you to chemicals such as lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
For a complete list of chemicals known to cause harm, visit https://www.p65warnings.ca.gov/chemicals.
Under the federal Clean Air Act (42 U.S.C. §7522(a)(3)), it is illegal to manufacture, sell, install, or use any part that defeats or alters a motor vehicle’s emission control system for use on public roads. Unless a product has received an Executive Order (EO) from the California Air Resources Board (CARB), it is not legal for use or installation on any pollution-controlled vehicle driven on public highways.
Some states have CARB-equivalent or independent emissions laws. Customers are responsible for verifying local regulations before purchasing or installing emissions-related products.
All performance, racing, or competition parts sold by this company are intended solely for off-road, closed-course, or competition use on vehicles that are never registered or used on public highways.
Kies Motorsports, LLC sells and markets these products for lawful use only. We do not condone or authorize the use of emission-control defeat devices or any modification that violates the Clean Air Act or state regulations.