{"product_id":"fabspeed-porsche-718-gt4-gts-spyder-rennkraft®-modular-street-and-racing-headers-with-hjs-catalytic-converters-2020","title":"Fabspeed Porsche 718 GT4 \/ GTS \/ Spyder RENNKRAFT® Modular Street and Racing Headers with HJS Catalytic Converters (2020+)","description":"\u003cp dir=\"ltr\"\u003eThese modular RENNKRAFT® headers are the perfect solution for any street driven 4.0 liter Cayman or Boxster. Our patented modular design features a quick release V-band connector that allows the owner to easily swap between our German made HJS 200 cell cats and a cat bypass “straight pipes” for track use (patent pending). Rennkraft® , translated from German is “race power”. These unique headers offer true street and racetrack functionality in an innovative precision engineered package. \u003c\/p\u003e \u003cp style=\"color: #d80000;\" dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: small; color: #000000;\"\u003eSOUND:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003eMany have complained about the lack of sound with the new 718 4.0 Liter cars, these high flowing headers completely solve that issue. Equipped with our 200 cell cats, you will get a louder exhaust note with a much more raw sound. Higher frequency tones are more defined, and deceleration burbles are more robust and transparent. With the cat bypass pipes installed, you're in store for a sound much more akin to a 911 CUP car than a Porsche street car. The volume isn't overbearing, but the sound is very aggressive and race bred. It totally changes the character of the car. With the stock muffler in place, there is no drone what-so-ever, even with our Over Axle GPF Delete Pipes also installed.\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan style=\"font-size: small;\"\u003e\u003cstrong\u003ePOWER:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan id=\"docs-internal-guid-3685dbdd-7fff-cdcc-3e27-e814d465a7e7\"\u003eAfter extensive dyno development we found that mid length headers made the most power across the entire power band. With no tune, compared to a stock car we gained 31 whp and 19 ft\/lbs of TQ at 7400 RPM with Sport Cats and 33 whp and 24 ft\/lbs of TQ at 7200 RPM with Cat Bypass Pipes installed. That's a gain of 33 HP and 36 HP, respectively, at the crank! Peak horsepower also increased from our baseline of 383 whp to 405 whp with our HJS Sport Cats and 409 whp with Cat Bypass Pipes. See our dyno graph above for more details.\u003c\/span\u003e\u003c\/p\u003e \u003cp style=\"color: #d80000;\" dir=\"ltr\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: small; color: #000000;\"\u003eFEATURES:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp style=\"display: inline !important;\"\u003e\u003cspan style=\"color: #000000;\"\u003eFits all Porsche 4.0L Cayman\/Boxster GT4\/GTS\/Spyder vehicles 2020+\u003c\/span\u003e\u003c\/p\u003e \u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eImpressive dyno proven power gains of 31 whp and 19 ft\/lbs of TQ with the Sport Cats and 33 whp and 24 ft\/lbs of TQ with Cat Bypass installed\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eSave 2 lbs \/ 0.9 KGs with Sport Cats and 7 lbs \/ 3.2 KGs with Cat Bypass compared to the factory headers\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eModular design that uses a V-band clamp so one can quickly swap between cats and cat bypass\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003eWith the RENNKRAFT® system, you can quickly install our QUICKTRACK™ cat bypass pipes for Racing and all out Race track-only competition events\u003c\/li\u003e \u003cli\u003eThe RENNKRAFT® system has been awarded a US Patent and is the only system of its kind in the world\u003c\/li\u003e \u003cli\u003eSwitching to cat-bypass for track events prevents catalytic converter degradation during all out competition racing abuse\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eF1 style high velocity merge collectors\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eDesigned from 3D scans of the OEM headers so we can achieve perfect bolt-on fitment\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eWe use German-made HJS HD tri-metallic 200-cell EURO 6 homologated catalytic converters for the best performance and reliability\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eWe use the largest catalytic converters that will fit in the factory location for maximum flow\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eFlows 93% of a 2.5 in straight pipe\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eOptimized for maximum performance with NO catalyst generated check engine light, guaranteed, when Sport Cats are installed\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eNo ECU tune required\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eNOT EPA or CARB Certified and not be used on street driven vehicles\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eWill fit with any brand of aftermarket exhaust system designed to work with the factory headers\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eBuilt 100% in house at Fabspeed Motorsport USA in Fort Washington, PA\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eThese are the very finest headers for the 718 4.0 liter cars and where developed in collaboration with HJS Emissions Technology\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003e25+ years of air-cooled and water-cooled Porsche experience went into our design for these hand-crafted headers\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eConstructed from CNC mandrel-bent T304L stainless steel\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan style=\"color: #000000;\"\u003eSimple DIY (Do-It-Yourself) bolt-on installation, no cutting or welding required\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cspan style=\"color: #000000;\"\u003eAll Fabspeed performance products are backed by the\u003c\/span\u003e \u003cspan id=\"docs-internal-guid-5c9386d2-7fff-c5a7-f37c-77ffa0a88f40\" style=\"color: #d80000;\"\u003e\u003ca href=\"https:\/\/www.fabspeed.com\/warranty\/#:~:text=Fabspeed%20warrants%20to%20the%20consumer,or%20a%20Fabspeed%20approved%20installer.\"\u003e\u003cspan style=\"color: #d80000;\"\u003eFabspeed Lifetime Warranty\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\n\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\u003cspan\u003eFor licensing of the RENNKRAFT® system, please inquire (215-646-4945)\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e \u003c\/p\u003e \u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: large; color: #000000;\"\u003eCreate a Package!\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cdiv style=\"max-width: 1200px; margin: 0 auto; padding: 20px; text-align: center;\"\u003e \u003cdiv style=\"display: inline-block; width: 300px; margin: 20px; padding: 15px; border: 1px solid #ddd; vertical-align: top;\"\u003e\n\u003cimg style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" src=\"https:\/\/cdn11.bigcommerce.com\/s-fh9wsjv2\/images\/stencil\/600x600\/products\/4502\/22272\/Porsche_718_GT4_2020_Valvetronic_Prototype_Product_Photo_2-1__59115.1668976613.jpg?c=2\" alt=\"\"\u003e \u003ch3\u003e718 GT4 \/ GTS \/ Spyder Valvetronic X-Pipe Exhaust System\u003c\/h3\u003e \u003cdiv style=\"display: flex; justify-content: center;\"\u003e\u003ca href=\"https:\/\/www.fabspeed.com\/fabspeed-porsche-718-gt4-gts-spyder-valvetronic-x-pipe-exhaust-system-2020\/\" target=\"_blank\"\u003e \u003cbutton style=\"background-color: #007bff; color: white; padding: 8px 15px; border: none; border-radius: 5px; cursor: pointer; font-size: 12px;\"\u003eView Product\u003c\/button\u003e \u003c\/a\u003e\u003c\/div\u003e \u003c\/div\u003e \u003cspan style=\"display: inline-block; font-size: 50px; font-weight: bold; margin: 150px 10px 0 10px;\"\u003e+\u003c\/span\u003e \u003cdiv style=\"display: inline-block; width: 300px; margin: 20px; padding: 15px; border: 1px solid #ddd; vertical-align: top;\"\u003e\n\u003cimg style=\"max-width: 100%; height: auto; margin-bottom: 10px;\" src=\"https:\/\/cdn11.bigcommerce.com\/s-fh9wsjv2\/images\/stencil\/600x600\/products\/4501\/49194\/Porsche_718_GT4_Over_Axle_Link_Pipes__22320.1734400245.jpg?c=2\" alt=\"\"\u003e \u003ch3\u003eFabspeed Porsche 718 GT4 \/ GTS Over Axle Link Pipes\u003c\/h3\u003e \u003cdiv style=\"display: flex; justify-content: center;\"\u003e\u003ca href=\"https:\/\/www.fabspeed.com\/fabspeed-porsche-718-gt4-gts-spyder-over-axle-link-pipes-2020\/\" target=\"_blank\"\u003e \u003cbutton style=\"background-color: #007bff; color: white; padding: 8px 15px; border: none; border-radius: 5px; cursor: pointer; font-size: 12px;\"\u003eView Product\u003c\/button\u003e \u003c\/a\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000; font-size: small;\"\u003e\u003cspan id=\"docs-internal-guid-6235ef90-7fff-3e84-80c6-8b61052dbdb4\"\u003eWHY YOUR SPORTSCAR MUST  ONLY HAVE  HJS GERMAN AUTOBAHN PROVEN Racing High Flow Catalytic Converters\u003c\/span\u003e: \u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eHJS Emission technology German imported EMITEC  catalytic converters are made from the highest grade materials in the WORLD. There is simply no alternative Street, Autobahn and Race Proven catalytic converter that compares in the World. \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eHJS German proven catalytic converters offer the Worlds very best high performance power increases along with enhanced Sportscar sound and long term proven durability.  Any and all other brands of catalytic converters simply and quickly degrade , lose power and give the car a Check Engine Light and or do not scrub the exhaust systems as well as the OEM catalytic converters. \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eHJS German EMITEC  200CPSI  catalytic converters can flow up to 90-93% of a straight pipe in most applications. The benefit is that you get the \"straight pipe exotic sound\" while still being able to provide enough emissions scrubbing to prevent a check engine light.   DO NOT ASSUME ALL CATALYTIC CONVERTERS ARE THE SAME or EVIL PErformance killers. HJS EMITEC catalytic converters are 100% Guaranteed to make more power than any Illegal cat-bypass pipes even on Turbocharged engines with aftermarket high performance turbos.  If you'd like to learn more,\u003c\/span\u003e\u003cspan style=\"background-color: #00ffff;\"\u003e\u003ca href=\"https:\/\/youtu.be\/JD0YedNpFec\"\u003e\u003cspan style=\"background-color: #00ffff;\"\u003ewatch our video about HJS German  catalytic converters.\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eFABSPEED MOTORSPORT USA was appointed 20 years ago as HJS Emissions Technology Menden Germany as HJS Exclusive importer and distributor for all of North and South America. Therefore when you purchase HJS catalytic converters and or Fabspeed systems equipped with HJS catalytic converters the PURCHASER is 100% ASSURED that they have received Genuine certified high-performance HJS components imported directly from HJS Emitec Germany.\u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eONLY Fabspeed Motorsport can offer HJS German direct imported catalytic converters in the USA. Any other company offering HJS Equipped products SHOULD be QUESTIONED before purchase as to where they obtained HJS Catalytic converters. If they reply they did NOT buy HJS catalytic converters from Fabspeed Motorsports USA, HJS Exclusive importer , you can be assured that the HJS cats are either certainly counterfeit, Grey Market and or falsified and engraved HJS just like a fake ROLEX watch. Never Ever assume when you can go direct to Fabspeed or one of our buyers to obtain 100% Genuine HJS Emitec Certified Homologated high performance racing catalytic converters. \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eFabspeed HJS German tri-metallic catalytic converters are State of the Art ultimate emission legal performance enhancing components. Your sports car , SUV and Truck equipped with HJS German catalytic converters is 100% Guaranteed to make more Horsepower, Torque, enhanced sports car, better fuel economy than any OEM stock catalytic converter and or ANY Illegal Cat Bypass pipe downtube. In fact, if you have any older cars, used cars and or cars with FAILING, DELETED or Butchered catalytic converters then do yourself a favor and UPGRADE your car with a set of FAbspeed HJS German high-flow trimetallic OBD2 European Certified Homologated catalytic converters. Its the Right thing to do to achieve CLEAN and GREEN Performance and leave absolutely nothing on the table for performance and sports car sound. Furthermore all the Air we breathe globally is not affected by using cat-bypass pipes or stupid solutions like NOn Catted downtubes. \u003c\/span\u003e\u003c\/p\u003e \u003cp dir=\"ltr\"\u003e\u003cspan\u003eHJS GErman catalytic converters aka catalysts on a properly tuned and functioning engine and engine management systems offer  guarantee NO CEL -  NO Check Engine Lights.This is in direct comparison to NO NAME Cheap as dirt ASIAN Pacific Rim 100% guarantee to Fail catalytic converters and Cheap European and USA aftermarket catalytic converters . Do NOT even waste your time , money and energy evaluating any other brand of catalytic converters for your high-performance car.\u003c\/span\u003e \u003cimg style=\"max-width: 50%; max-height: 50%;\" src=\"https:\/\/cdn11.bigcommerce.com\/s-fh9wsjv2\/product_images\/uploaded_images\/hjs-official-2.jpg?t=1588095735\u0026amp;_ga=2.250545294.946037274.1588001319-631797554.1577113273\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Fabspeed Motorsport","offers":[{"title":"Default Title","offer_id":47759581610214,"sku":"FS.POR.718GT4.MDLRHDR.XXX","price":4715.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.rmknox.com\/products\/fabspeed-porsche-718-gt4-gts-spyder-rennkraft%c2%ae-modular-street-and-racing-headers-with-hjs-catalytic-converters-2020","provider":"RM Motor Werks","version":"1.0","type":"link"}