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Fabspeed's US‑patented RENNKRAFT modular exhaust for the 992 GT3/GT3 RS delivers +35 hp and +39 ft/lbs at 4250 RPM while shedding 18 lbs versus OEM. Constructed from T321 stainless with equal-length headers, high‑velocity merge collectors, and 70mm CNC mandrel-bent tubing, it uses V-band connections to swap quickly between HJS 200‑cell sport cats and cat-bypass for track use. Optimized to avoid check engine lights with Sport Cats installed (EU GPF-equipped cars may require a simulator or tune), it installs as a simple bolt-on and offers multiple tip options. Backed by Fabspeed's Lifetime Warranty; race/track products are excluded from the Sound Solutions Warranty.

Tip Options Available:
FEATURES:
Question: What gains can I expect compared to the stock exhaust?
Short answer: Fabspeed's RENNKRAFT modular exhaust adds 35 hp and 39 ft/lbs of torque at 4250 RPM while shedding 18 lbs (8.2 kg) versus the OEM system.
Question: Will this system fit my 992 GT3 or GT3 RS, and will it trigger a check engine light?
Short answer: It fits all Porsche 992 GT3 and GT3 RS models worldwide. On EU cars, the system deletes the GPF; monitored GPF systems will trigger a check engine light unless a simulator or tune is used. With HJS 200-cell Sport Cats installed, the system is optimized to avoid catalyst-generated check engine lights.
Question: What's the difference between the Sport Cats and the Cat-Bypass, and when should I use each?
Short answer: Sport Cats use German-made Emitec Tier 1 HJS HD tri‑metallic 200‑cell EURO 6 homologated catalysts for top performance and reliability, and are optimized to avoid CELs. The Cat‑Bypass removes the catalysts and is intended for track use; switching to bypass helps prevent catalytic converter degradation during endurance racing. The modular V‑band design lets you swap between the two quickly.
Question: What engineering and materials set this exhaust apart?
Short answer: It's built from T321 stainless steel Mil‑Spec tubing (to ASME specs) with equal‑length headers and Burns Stainless F1/Indy‑style high‑velocity merge collectors. It features 70 mm (2.75 in) CNC mandrel‑bent tubing, CAD‑designed investment‑cast stainless flanges, and springs for collector retention. The US‑patented RENNKRAFT modular system uses V‑bands for quick configuration changes and is 100% mandrel‑bent, manufactured, and quality‑controlled in-house in the USA.
Question: How is installation handled, what tip options are available, and what's the warranty?
Short answer: It's a simple bolt‑on install with no cutting or welding required, available at Fabspeed's South Florida Performance Facility or via nationwide shipping. Tip options include Carbon Fiber, Satin Black, Polished Stainless Steel, Brushed Single Wall Stainless, Brushed Stainless Turn Down, and Titanium. All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty; race/track‑oriented products are not covered under the Sound Solutions Warranty.
Question: What performance gains and weight savings does this system deliver over stock? Short answer: The RENNKRAFT modular exhaust adds 35 hp and 39 ft/lbs of torque at 4250 RPM and sheds 18 lbs (8.2 kg) compared to the OEM system.
Question: How does the modular design work, and when should I use Sport Cats versus Cat-Bypass? Short answer: The US‑patented RENNKRAFT system uses V‑band connections so you can quickly swap between HJS 200‑cell Sport Cats and Cat‑Bypass. Sport Cats are EURO 6 homologated for top performance and reliability and are optimized to avoid catalyst‑related CELs. The Cat‑Bypass removes the catalysts for track use, helping prevent catalytic converter degradation during endurance racing.
Question: Will this fit my 992 GT3/GT3 RS, and could it trigger a check engine light (especially on EU GPF cars)? Short answer: It fits all Porsche 992 GT3 and GT3 RS models worldwide. On EU cars, the system deletes the GPF; monitored GPF systems will trigger a check engine light unless a simulator or tune is used. With the HJS 200‑cell Sport Cats installed, the system is optimized to avoid catalyst‑generated check engine lights.
Question: What engineering features and materials set this exhaust apart? Short answer: It’s built from T321 stainless Mil‑Spec tubing (ASME), with equal‑length headers and Burns Stainless F1/Indy‑style high‑velocity merge collectors. It uses 70 mm (2.75 in) CNC mandrel‑bent tubing, CAD‑designed investment‑cast stainless flanges, and spring‑retained collectors for durability. The RENNKRAFT system is US‑patented, 100% mandrel‑bent, and manufactured and quality‑controlled in‑house in the USA.
Question: How is installation handled, what tip options are available, and what’s the warranty coverage? Short answer: It’s a simple bolt‑on install with no cutting or welding, available at Fabspeed’s South Florida Performance Facility or via nationwide shipping. Tip options include Carbon Fiber, Satin Black, Polished Stainless Steel, Brushed Single Wall Stainless, Brushed Stainless Turn Down, and Titanium. All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty; race/track‑oriented products are not covered under the Sound Solutions Warranty.
Available for Install at our South Florida Performance Facility or Nationwide Shipping.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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