$595.00 USD
$595.00 USD










































Titanium Construction • Valved Control • Signature F1 Tone
The 981 Cayman and Boxster platform is a dream—perfectly balanced, razor-sharp in handling, and endlessly rewarding. But from the factory, the sound falls short of the experience. That’s where Valvetronic Designs steps in.
Our cat-back exhaust system transforms the 981’s exhaust note into a motorsport-inspired symphony. Measuring 2.5 inches from the headers back, this setup drastically elevates tone, character, and raw emotion. With the valves open, exhaust gases flow straight through to our large X-pipe and exit via 3.5-inch tips, delivering the raw, high-pitched sound the 981 chassis deserves. Close the valves, and the system calms down, offering a refined and neighbor-friendly tone.
With precision engineering, lightweight titanium construction, and our proven valve control technology, this system unlocks the true voice of the 981.
Valves Open: Free-flowing, raw, high-pitched sound with motorsport character.
Valves Closed: Quieter, refined tone for comfortable daily use and low-speed driving.
Seamless Control: Vacuum-actuated valves operated via supplied controller or integrated with OEM operation for factory-like usability.
Fully mandrel-bent tubing for maximum flow
Precision TIG welds for superior strength and reliability
Built from Grade 5 Titanium for lightweight performance and durability
Stunning 3.5-inch tips designed to complement the 981’s rear styling
Vacuum-actuated valves for total sound control
15 lbs. lighter than the factory exhaust
100% reversible – always able to go back to stock
2012 – 2016 Porsche Cayman / Cayman S / Cayman GTS / Cayman GT4
2012 – 2016 Porsche Boxster / Boxster S / Boxster GTS / Boxster Spyder
⚠️ Note: For 2012 models, please verify your factory exhaust flange style. This system is compatible with 2-bolt flange only. It will not fit 3-bolt flanges.
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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.