{"product_id":"porsche-long-tube-header-system-cayman-2023-2025-fs-por-718gt4rs-hdr-sc","title":"Porsche Long Tube Header System - Cayman | 2023-2025  FS-POR-718GT4RS-HDR-SC","description":"\u003cp\u003ePorsche Long Tube Header System For Porsche 718 Cayman GT4 RS (2023-2025) Models.\u003c\/p\u003e\n\u003cp data-sourcepos=\"1:1-1:54\"\u003e\u003cstrong\u003eLong Tube Header System - Sport Cats Configuration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-sourcepos=\"3:1-3:718\"\u003eThis is the ULTIMATE header system engineered for the GT4RS, designed with over 30 years of Porsche expertise. This RENNKRAFT Long Tube Header System relocates the primary catalytic converter behind the rear axle, allowing for true long tube headers and replacing the factory 700 cell ceramic catalytic converter with a high-quality HJS 200 cell tri-metallic sport catalytic converter. The combination of the long tube design and sport catalytic converter drastically improves both power and sound without triggering a CEL (Check Engine Light) due to the heavy metal loaded HJS catalytic converter. The integrated RENNKRAFT system allows for easy swapping between cats and cat bypass using quick-release v-band clamps.\u003c\/p\u003e\n\u003cp data-sourcepos=\"5:1-5:16\"\u003e\u003cstrong\u003ePower Gains:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"7:1-10:0\"\u003e\n\u003cli data-sourcepos=\"7:1-7:118\"\u003e\n\u003cspan class=\"citation-0 recitation\"\u003eMaximum gains of \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-0 recitation\"\u003e48 WHP\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-0 recitation\"\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-0 recitation\"\u003e54 ft\/lbs of TQ\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-0 recitation\"\u003e at 4700 RPM (equivalent to \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-0 recitation\"\u003e53 HP at the crank\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-0 recitation citation-end-0\"\u003e).\u003csup class=\"superscript\" data-turn-source-index=\"1\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003cspan class=\"button-container hide-from-message-actions ng-star-inserted\"\u003e   \u003c!----\u003e\u003c\/span\u003e\u003c!----\u003e\n\u003cdiv class=\"container ng-tns-c665693076-312 hide\"\u003e\n\u003c!----\u003e\n\u003cdiv class=\"carousel-container ng-tns-c665693076-312\"\u003e\n\u003cdiv class=\"carousel-content ng-tns-c665693076-312\"\u003e\n\u003cdiv data-test-id=\"sources-carousel-source\" class=\"sources-carousel-source ng-tns-c665693076-312 hide ng-star-inserted\"\u003e\u003c!----\u003e\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"8:1-8:50\"\u003ePeak wheel horsepower increases from 456 to 490.\u003c\/li\u003e\n\u003cli data-sourcepos=\"9:1-10:0\"\u003e\n\u003cspan class=\"citation-1 recitation\"\u003eAdds \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-1 recitation\"\u003e+57HP at the crank\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-1 recitation\"\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-1 recitation\"\u003e+48 WHP\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-1 recitation\"\u003e with \u003c\/span\u003e\u003cstrong\u003e\u003cspan class=\"citation-1 recitation\"\u003e+64ftlb torque \/ 54 ft\/lbs of TQ\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"citation-1 recitation citation-end-1\"\u003e at 4700 RPM.\u003csup class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003cspan class=\"button-container hide-from-message-actions ng-star-inserted\"\u003e   \u003c!----\u003e\u003c\/span\u003e\u003c!----\u003e\n\u003cdiv class=\"container ng-tns-c665693076-313 hide\"\u003e\n\u003c!----\u003e\n\u003cdiv class=\"carousel-container ng-tns-c665693076-313\"\u003e\n\u003cdiv class=\"carousel-content ng-tns-c665693076-313\"\u003e\n\u003cdiv data-test-id=\"sources-carousel-source\" class=\"sources-carousel-source ng-tns-c665693076-313 hide ng-star-inserted\"\u003e\u003c!----\u003e\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"11:1-11:178\"\u003eThis system is guaranteed to be the World's Very Best GT4RS Spyder RS complete engineered system, offering the best sound, maximum power, maximum durability, and best components.\u003c\/p\u003e\n\u003cp data-sourcepos=\"13:1-13:24\"\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-sourcepos=\"15:1-22:68\"\u003e\n\u003cli data-sourcepos=\"15:1-15:121\"\u003e\n\u003cspan class=\"citation-2 recitation citation-end-2\"\u003eSaves 5 lbs \/ 2.3 KGs with cats and 13 lbs \/ 5.9 KGs with cat bypass compared to the stock Porsche system.\u003csup class=\"superscript\" data-turn-source-index=\"3\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003cspan class=\"button-container hide-from-message-actions ng-star-inserted\"\u003e   \u003c!----\u003e\u003c\/span\u003e\u003c!----\u003e\n\u003cdiv class=\"container ng-tns-c665693076-314 hide\"\u003e\n\u003c!----\u003e\n\u003cdiv class=\"carousel-container ng-tns-c665693076-314\"\u003e\n\u003cdiv class=\"carousel-content ng-tns-c665693076-314\"\u003e\n\u003cdiv data-test-id=\"sources-carousel-source\" class=\"sources-carousel-source ng-tns-c665693076-314 hide ng-star-inserted\"\u003e\u003c!----\u003e\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"16:1-16:86\"\u003eEqual length headers with Formula 1 \/ Indy car style high-velocity merge collectors.\u003c\/li\u003e\n\u003cli data-sourcepos=\"17:1-17:153\"\u003e\n\u003cspan class=\"citation-3 recitation citation-end-3\"\u003eConstructed from CNC mandrel bent T304 stainless steel, bent in-house at Fabspeed on a UNISON limited defense quality all-electric bender.\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c!----\u003e\u003cspan class=\"button-container hide-from-message-actions ng-star-inserted\"\u003e   \u003c!----\u003e\u003c\/span\u003e\u003c!----\u003e\n\u003cdiv class=\"container ng-tns-c665693076-315 hide\"\u003e\n\u003c!----\u003e\n\u003cdiv class=\"carousel-container ng-tns-c665693076-315\"\u003e\n\u003cdiv class=\"carousel-content ng-tns-c665693076-315\"\u003e\n\u003cdiv data-test-id=\"sources-carousel-source\" class=\"sources-carousel-source ng-tns-c665693076-315 hide ng-star-inserted\"\u003e\u003c!----\u003e\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\n\u003c\/li\u003e\n\u003cli data-sourcepos=\"18:1-18:128\"\u003eBi-layer heat shielding consisting of a ceramic fiber core and stainless steel shell, capable of handling up to 2400F \/ 1300C.\u003c\/li\u003e\n\u003cli data-sourcepos=\"19:1-19:79\"\u003eInvestment cast stainless steel header flanges for maximum flow and strength.\u003c\/li\u003e\n\u003cli data-sourcepos=\"20:1-20:114\"\u003eModular RENNKRAFT design with a V-band clamp for quick swapping between HJS catalytic converters and cat bypass.\u003c\/li\u003e\n\u003cli data-sourcepos=\"21:1-21:23\"\u003eNo ECU tune required.\u003c\/li\u003e\n\u003cli data-sourcepos=\"22:1-22:68\"\u003eSimple bolt-on installation, with no cutting or welding necessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-sourcepos=\"3:1-3:13\"\u003e\u003cstrong\u003eReturns subject to a 25% restocking fee.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Fabspeed","offers":[{"title":"Default Title","offer_id":40854189113402,"sku":"FS.POR.718GT4RS.HDR.SC","price":8658.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/4846\/2650\/files\/Porsche-Long-Tube-Header-System-Cayman-2023-2025-F-0.jpg?v=1747927175","url":"https:\/\/sierramadrecollection.com\/products\/porsche-long-tube-header-system-cayman-2023-2025-fs-por-718gt4rs-hdr-sc","provider":"Sierra Madre Collection","version":"1.0","type":"link"}