SSi

About SSi – Stainless Steel Innovations

SSi (Stainless Steel Innovations) is one of the most respected names in the Porsche aftermarket, with a story that spans continents and decades. Founded in California in the 1970s by John Daniels, SSi built an early reputation for premium exhaust systems that were among the very few American-made components coveted by Porsche enthusiasts the world over. That reputation has only grown with time.

In 2012, the brand was acquired by Martin Pedersen and brought under the JP Group umbrella, relocating its home base to Viborg, Denmark. Rather than reinvent what made SSi special, Pedersen and his team committed to preserving the brand's original manufacturing standards and attention to detail — carrying the SSi tradition forward while adding a distinctly European refinement. The result is a philosophy the brand sums up simply: German Engineering, American Ingenuity, Danish Design.

Handcrafted Exhaust Systems Built to Last

What sets SSi apart from mass-market alternatives is an unwavering commitment to artisanal craftsmanship. Every exhaust system is handcrafted in small batches, using high-quality stainless steel and titanium to ensure lightweight strength and long-term corrosion resistance. Skilled technicians hand-form components, apply expert welding techniques, and meticulously inspect each piece before it leaves the shop. The outcome is an exhaust that delivers exceptional performance, refined acoustics, and aesthetics worthy of the vehicles they are built for.

SSi's catalog is focused but deep, covering the core exhaust needs of classic Porsche 911 owners. Their celebrated exhaust mufflers range from race-bred, free-flow designs to more subdued street setups with TÜV approval — offering something for every driving style. Complementing these are meticulously engineered exhaust headers that form the backbone of SSi's complete exhaust kit solutions, helping unlock the full potential of air-cooled flat-six engines.

Proper system longevity depends on more than just quality tubing and mufflers — it requires robust mounting hardware too. SSi addresses this with purpose-made exhaust muffler straps and exhaust muffler hanger straps designed to keep every component securely in place under the vibration and heat of real-world driving. These small but critical details reflect the same obsessive fit-and-finish philosophy that defines every SSi product.

Why Porsche Enthusiasts Trust SSi

For collectors and drivers who care deeply about originality, performance, and quality, SSi represents something rare: an aftermarket brand that earns genuine respect in a market dominated by OEM loyalty. Whether you are restoring a numbers-matching 911 or building a track-day weapon, SSi exhaust components are engineered to meet OE standards while offering the character and sound that factory parts often cannot match. With decades of expertise and a passionate team behind every product, SSi continues to be a benchmark for Porsche exhaust excellence worldwide.