{"product_id":"cencal-high-flow-race-headers-porsche-991-1-991-2-gt3-gt3rs-t304-stainless-steel","title":"F1 High-Flow Race Headers – Porsche 991.1\/991.2 GT3 \u0026 GT3RS (T304 Stainless","description":"\u003ch6\u003e\u003cstrong\u003eHigh-Flow Race Headers – Porsche 991.1 \/ 991.2 GT3 \u0026amp; GT3RS (T304 Stainless Steel)\u003c\/strong\u003e\u003c\/h6\u003e\u003cp\u003eUnleash the full performance and sound potential of your Porsche 991 GT3 or GT3 RS with the Cen-Cal Motorsport High-Flow Race Headers, engineered for maximum flow, throttle response, and pure motorsport tone. Designed for the high-revving 9,000 RPM flat-six, these headers transform both the character and capability of your GT3—enhancing exhaust velocity, mid-range torque, and top-end power.\u003c\/p\u003e\u003cp\u003eConstructed from premium T304 stainless steel, each set is built to withstand extreme track temperatures and deliver long-lasting durability. Precision-engineered mandrel bends and TIG welds ensure perfect flow consistency and a flawless fit—backed by the same race-ready quality standards used in our F1 exhaust systems.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eProduct Features\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eT304 Stainless Steel Construction: Corrosion-resistant stainless steel designed for heat endurance and long-term durability\u003c\/li\u003e\n\u003cli\u003eMaximized Exhaust Flow: Reduces backpressure, increases horsepower, and sharpens throttle response across the RPM range\u003c\/li\u003e\n\u003cli\u003eMandrel-Bent Tubing: Smooth, unrestricted flow with consistent diameter for optimal gas velocity\u003c\/li\u003e\n\u003cli\u003ePrecision TIG Welds: Show-quality welds ensure strength, durability, and premium finish\u003c\/li\u003e\n\u003cli\u003e100% OEM-Compatible Fitment: Direct bolt-on installation for factory or aftermarket exhaust systems—no cutting or permanent modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eConfiguration Options\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFree-Flow Catless Race Headers: Loudest, most aggressive tone and maximum performance\u003c\/li\u003e\n\u003cli\u003eHigh-Flow Catted Race Headers: Strong flow while providing a more refined, street-friendly sound\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2014–2019 Porsche 991.1 \/ 991.2 GT3\u003c\/li\u003e\n\u003cli\u003e2016–2019 Porsche 991.1 \/ 991.2 GT3RS\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNoticeable horsepower and torque increase throughout the rev range\u003c\/li\u003e\n\u003cli\u003eSharper throttle response and reduced backpressure\u003c\/li\u003e\n\u003cli\u003eAggressive, high-frequency exhaust note true to Porsche motorsport heritage\u003c\/li\u003e\n\u003cli\u003ePrecision-built from premium stainless steel for lasting performance\u003c\/li\u003e\n\u003cli\u003eFully reversible installation compatible with stock or aftermarket cat-backs\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eLead Time \u0026amp; Availability\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis product is sometimes in stock at our Oceanside, CA location, but lead times can vary based on demand. All headers are usually made to order, typically requiring 5–15 business days for production, with an additional 10 business days for shipping.\u003c\/p\u003e\u003cp\u003ePlease email \u003ca\u003esupport@cencalmotorsport.com\n\n\u003c\/a\u003e to check current availability before ordering.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eFAQs\u003c\/strong\u003e\u003c\/h3\u003e\u003ch6\u003e\u003cstrong\u003eDo I need a tune with these headers?\u003c\/strong\u003e\u003c\/h6\u003e\u003cp\u003eA tune is recommended to optimize performance and prevent check-engine lights when removing or modifying catalytic components.\u003c\/p\u003e\u003ch6\u003e\u003cstrong\u003eAre these street-legal?\u003c\/strong\u003e\u003c\/h6\u003e\u003cp\u003eThese headers are for off-road and track use only and may not comply with emissions regulations in all areas.\u003c\/p\u003e\u003ch6\u003e\u003cstrong\u003eDo they work with the factory exhaust system?\u003c\/strong\u003e\u003c\/h6\u003e\u003cp\u003eYes, they integrate seamlessly with both OEM and aftermarket cat-back systems.\u003c\/p\u003e\u003ch6\u003e\u003cstrong\u003eAre these a full replacement?\u003c\/strong\u003e\u003c\/h6\u003e\u003cp\u003eYes, they replace the factory headers entirely with a high-performance, race-grade design.\u003c\/p\u003e\u003chr\u003e\u003ch6\u003e⚠️ THIS PRODUCT IS FOR OFFROAD USE ONLY\u003c\/h6\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"CenCal Motorsport","offers":[{"title":"Free Flow Catless Headers","offer_id":46457418285253,"sku":"991-GT3-HDR-CATLESS","price":1799.99,"currency_code":"USD","in_stock":true},{"title":"High Flow Catted Headers","offer_id":46457418318021,"sku":"991-GT3-HDR-CAT","price":2999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0765\/9841\/1461\/files\/F1High-FlowRaceHeaders_Porsche991.1_991.2GT3_GT3RS_T304Stainless.png?v=1782510081","url":"https:\/\/bmdperformance.com\/products\/cencal-high-flow-race-headers-porsche-991-1-991-2-gt3-gt3rs-t304-stainless-steel","provider":"My Store","version":"1.0","type":"link"}