{"product_id":"porsche-718-gt4-cayman-street-headers","title":"Porsche 718 GT4 \/ Spyder \/ GTS 4.0L SOUL Street Headers","description":"\u003cp\u003eSoul Performance Products Street Headers are built around large diameter, free-flowing catalytic converters with optimized cast flanges and runners for maximum gains in power, throttle response, and flat-six engine tone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDETAILS\u003c\/strong\u003e\u003cbr\u003e\n\u003cstrong\u003e+\u003c\/strong\u003e  Fits all 4.0L Porsche 718 GT4 \/ GTS Cayman and Spyder vehicles (2020+)\u003cbr\u003e\n\u003cstrong\u003e+  \u003c\/strong\u003eDirect bolt on installation\u003cbr\u003e\n\u003cstrong\u003e+\u003c\/strong\u003e  Weighs 1.51 lbs \/ .6 kg less than factory exhaust components (24.19 lbs vs 25.7 lbs)\u003cbr\u003e\n\u003cstrong\u003e+\u003c\/strong\u003e  All Soul Performance Products exhaust components are backed by the industry’s first and finest \u003ca href=\"https:\/\/soulpp.com\/warranty\/\" target=\"_blank\" rel=\"noopener\"\u003eLifetime Warranty\u003c\/a\u003e for both street and track use\u003cbr\u003e\n\u003cb\u003e+\u003c\/b\u003e  Designed and built in-house at our Willow Grove, PA facility\u003c\/p\u003e\u003cp\u003e\u003cb\u003eDEVELOPMENT AND TESTING:  \u003c\/b\u003eThe factory headers were designed to be easy and cheap to manufacture while also conforming to the performance killing emissions standards of the market. The stock headers use cheap pressed flanges, squashed primary tubing, subpar collectors and dense catalytic converters – all robbing your high performance Porsche of the sound and performance it deserves. By smoothing the interface between the flange\/primary tubes, using smooth radius large diameter bends, and implementing a performance oriented collector with merge spikes, we have been able to achieve increased flow, response, and performance with a more aggressive exhaust note to match.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/soulpp.com\/wp-content\/uploads\/2026\/02\/Soul-Performance-Products-Porsche-718-GT4-Headers-Flange-Design-Website.jpg\" target=\"_blank\" rel=\"noopener\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCONSTRUCTION:  \u003c\/b\u003eEach set is assembled in house in the USA out of mandrel bent, thick wall .065″” T304L stainless steel. Back purged TIG welding (with \u003ca href=\"https:\/\/soulpp.com\/2019\/12\/13\/tech-talk-airgas-arcal-prime\/\" target=\"_blank\" rel=\"noopener\"\u003eARCAL™ Prime argon gas\u003c\/a\u003e) ensures proper weld penetration and longevity – crucial for durability on the track. Our cast head flanges allow for a smooth transition from exhaust ports into the runners. Water jet cut exhaust flanges are made to ISO 9001:2015 standards with tolerances of +\/- 0.003 inches for extreme precision. We fabricate these headers using thick gauge aluminum fixtures which act as a great heat sink during the welding process and prevent warping not only of our products, but the fixtures themselves to ensure perfect fitment.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/soulpp.com\/wp-content\/uploads\/2026\/02\/Soul-Performance-Products-Porsche-718-GT4-Street-Headers-Development-2.jpg\" target=\"_blank\" rel=\"noopener\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eBOLT ON AND GO:  \u003c\/b\u003eEvery set is rigorously quality-checked prior to shipping and then foam packed to ensure your order arrives in perfect condition. New high grade hardware and OEM three bolt gaskets are included.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eLIFETIME WARRANTY:  \u003c\/b\u003eEnjoy your SOUL exhaust components with confidence on both the street and track as they are covered for life! Our team will quickly work with you to resolve any issues or answer any questions that you may have.\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\u003ch3\u003eAvailability \u0026amp; estimated lead time\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eSpecial-order notice:\u003c\/strong\u003e Most SOUL Performance Products components are built or finished to order. Estimated lead times vary by configuration and production schedule, are estimates only, and are not guaranteed. Contact EuroCustomsPR before ordering if timing is critical.\u003c\/p\u003e","brand":"SOUL Performance Products","offers":[{"title":"Default Title","offer_id":45298520195254,"sku":"POR.718GT4.STH","price":5275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1553\/5229\/files\/SOUL-Performance-Products-Porsche-718-GT4-Street-Headers-1.jpg?v=1785360182","url":"https:\/\/eurocustomspr.com\/products\/porsche-718-gt4-cayman-street-headers","provider":"EuroCustomsPR","version":"1.0","type":"link"}