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RENNKRAFT® US PATENTED Modular Street and Racing Headers with HJS Catalytic Converters
US-patented RENNKRAFT modular headers for the Porsche 992 GT3 and GT3 RS (2022+), with a quick-release V-band connector that lets the owner swap between German-made German manufacturer of the high-flow catalytic converters Fabspeed fits in its sport cat products. 200-cell catalytic converters and QuickTrack Straight-through pipes that replace a catalytic converter section; removes emissions equipment for track use. for track use. Built from CNC mandrel-bent tubing, they save 2.7 kg over the factory headers and add around 16whp and 27 Nm of torque with the Sport Cats fitted, or 19whp and 35 Nm with the link pipes. Sport Cats bring a more aggressive Cup-car-style note; the link pipes push it further for track-only use. Deletes the Gasoline Particulate Filter: an EU-market emissions filter that traps exhaust soot, similar to a diesel DPF. on EU cars, which will trigger a check-engine light on monitored systems unless a simulator or tune is used.
Frequently asked
Does the RENNKRAFT® US PATENTED Modular Street and Racing Headers with HJS Catalytic Converters fit my 911 GT3 RS / S/T?
This listing is specific to the Porsche 911 GT3 RS / S/T (992.1). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.
What does the price include?
The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.
How long until it arrives?
Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.
What's the difference between the Sport Cats and Cat Bypass configurations?
The Sport Cats option keeps HJS catalytic converters in place for clean, quiet, street-driven power; the Cat Bypass Pipes swap in link pipes for track use, and Fabspeed states these bypass pipes are not intended for street use.
Will this cause a check engine light on an EU car?
Fabspeed notes this system deletes the GPF on EU cars, which will cause a check engine light for a monitored GPF system unless a simulator or tune is used.
Can I switch between street and track setups without buying new parts?
Yes, the modular design uses a V-band clamp so you can quickly swap between the catalytic converters and the track link pipes, which also helps protect the cats from endurance-racing wear.
Will it drone with the stock muffler?
No, Fabspeed says that with the stock muffler in place there is no drone whatsoever, along with maximum clean emissions performance.
Which option should I choose?
Quick-release V-band clamp. Sport Cats keeps HJS catalytic converters fitted for street use, no check engine light. Cat Bypass Pipes removes them for closed-track/off-road use only, and deletes the GPF on EU cars. The combo gives you both sections to swap between yourself.
Who installs it?
Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.
Is it covered by warranty?
Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.
Can I just buy this outright, or do I need to talk to someone first?
Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.
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