{"product_id":"porsche-992-gt3-gt3rs-competition-long-tube-header-vanta-yonristic-performance","title":"Porsche 992 GT3 \/ GT3RS - Competition Long-Tube Header VANTA - Yonristic Performance","description":"\u003cp data-start=\"98\" data-end=\"832\"\u003e\u003cstrong data-start=\"98\" data-end=\"130\"\u003eBuilt to win. Tuned to sing.\u003c\/strong\u003e\u003cbr data-start=\"130\" data-end=\"133\"\u003eThe 992 GT3 and GT3 RS are benchmark track cars, but their factory header assemblies are a compromise—short primary runners, dense packaging and high-cell catalysts that raise backpressure, flatten mid-range response, and mute the glorious character of the 4.0-liter Mezger-line flat-six. Our \u003cstrong data-start=\"426\" data-end=\"472\"\u003eCompetition Long-Tube Equal-Length Headers\u003c\/strong\u003e remove those bottlenecks. Each cylinder sees a true, matched primary length that times pressure waves at the collector for strong scavenging, quicker cylinder emptying, and a broader, cleaner power band. The result is a sharper throttle, a harder pull from 4,000 rpm to redline, and the razor-clear motorsport timbre GT3 owners crave—without the brittle rasp.\u003c\/p\u003e\n\u003ch3 data-start=\"834\" data-end=\"859\"\u003eDesign \u0026amp; Construction\u003c\/h3\u003e\n\u003cul data-start=\"860\" data-end=\"1545\"\u003e\n\u003cli data-start=\"860\" data-end=\"1016\"\u003e\n\u003cp data-start=\"862\" data-end=\"1016\"\u003e\u003cstrong data-start=\"862\" data-end=\"879\"\u003eArchitecture:\u003c\/strong\u003e long-tube, \u003cstrong data-start=\"891\" data-end=\"913\"\u003etruly equal-length\u003c\/strong\u003e primaries merging into a high-efficiency collector for pulse-timed scavenging and reduced reversion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1017\" data-end=\"1158\"\u003e\n\u003cp data-start=\"1019\" data-end=\"1158\"\u003e\u003cstrong data-start=\"1019\" data-end=\"1032\"\u003eMaterial:\u003c\/strong\u003e \u003cstrong data-start=\"1033\" data-end=\"1066\"\u003eAISI 304 stainless steel only\u003c\/strong\u003e (no mix-and-match)—chosen for durability, heat resistance, and stable acoustic character.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1159\" data-end=\"1285\"\u003e\n\u003cp data-start=\"1161\" data-end=\"1285\"\u003e\u003cstrong data-start=\"1161\" data-end=\"1184\"\u003eThermal Management:\u003c\/strong\u003e full \u003cstrong data-start=\"1190\" data-end=\"1221\"\u003eintegrated heat-shield wrap\u003c\/strong\u003e to protect surrounding components and lower under-body temps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1286\" data-end=\"1457\"\u003e\n\u003cp data-start=\"1288\" data-end=\"1457\"\u003e\u003cstrong data-start=\"1288\" data-end=\"1306\"\u003eManufacturing:\u003c\/strong\u003e CAD\/3D scanned for millimetric fit; \u003cstrong data-start=\"1343\" data-end=\"1372\"\u003eCNC-machined head flanges\u003c\/strong\u003e; back-purged \u003cstrong data-start=\"1386\" data-end=\"1399\"\u003eTIG welds\u003c\/strong\u003e with smooth internal transitions to keep velocity high.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1458\" data-end=\"1545\"\u003e\n\u003cp data-start=\"1460\" data-end=\"1545\"\u003e\u003cstrong data-start=\"1460\" data-end=\"1472\"\u003eFitment:\u003c\/strong\u003e 992 GT3 and 992 GT3 RS (all years). Direct bolt-on to factory locations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1547\" data-end=\"1571\"\u003eSound \u0026amp; Driveability\u003c\/h3\u003e\n\u003cp data-start=\"1572\" data-end=\"1927\"\u003eEqual length kills the uneven, phasey note of short\/unequal runners. Idle settles into a richer baritone; mid-range gains a muscular, linear surge; and the top-end rips with a clean, high-frequency wail. Because pulses are synchronized and the collector does the work—not the muffler—you get \u003cstrong data-start=\"1864\" data-end=\"1892\"\u003eaggression without drone\u003c\/strong\u003e and \u003cstrong data-start=\"1897\" data-end=\"1926\"\u003eclarity without harshness\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-start=\"1929\" data-end=\"1963\"\u003eRealistic Performance Gains*\u003c\/h3\u003e\n\u003cp data-start=\"1964\" data-end=\"2182\"\u003eDyno results from the 992 GT3 platform with developed long-tube\/equal-length headers consistently show double-digit improvements, with \u003cstrong data-start=\"2099\" data-end=\"2118\"\u003e200-cell catted\u003c\/strong\u003e options slightly behind \u003cstrong data-start=\"2143\" data-end=\"2154\"\u003ecatless\u003c\/strong\u003e race versions, as expected.\u003c\/p\u003e\n\u003cul data-start=\"2184\" data-end=\"2817\"\u003e\n\u003cli data-start=\"2184\" data-end=\"2335\"\u003e\n\u003cp data-start=\"2186\" data-end=\"2335\"\u003e\u003cstrong data-start=\"2186\" data-end=\"2224\"\u003e200-Cell HJS-style Catted Version:\u003c\/strong\u003e\u003cbr data-start=\"2224\" data-end=\"2227\"\u003e\u003cstrong data-start=\"2229\" data-end=\"2258\"\u003e+12–16 whp \/ +16–20 lb-ft\u003c\/strong\u003e at the wheels (≈ \u003cstrong data-start=\"2276\" data-end=\"2295\"\u003e+15–20 hp crank\u003c\/strong\u003e). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2337\" data-end=\"2477\"\u003e\n\u003cp data-start=\"2339\" data-end=\"2477\"\u003e\u003cstrong data-start=\"2339\" data-end=\"2366\"\u003eCatless (Race) Version:\u003c\/strong\u003e\u003cbr data-start=\"2366\" data-end=\"2369\"\u003e\u003cstrong data-start=\"2371\" data-end=\"2400\"\u003e+18–22 whp \/ +24–28 lb-ft\u003c\/strong\u003e at the wheels (≈ \u003cstrong data-start=\"2418\" data-end=\"2437\"\u003e+22–26 hp crank\u003c\/strong\u003e). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2479\" data-end=\"2817\"\u003e\n\u003cp data-start=\"2481\" data-end=\"2817\"\u003e\u003cstrong data-start=\"2481\" data-end=\"2530\"\u003eWith ECU Calibration (on top of our headers):\u003c\/strong\u003e\u003cbr data-start=\"2530\" data-end=\"2533\"\u003eExpect an additional \u003cstrong data-start=\"2556\" data-end=\"2581\"\u003e+4–8 whp \/ +5–9 lb-ft\u003c\/strong\u003e, for combined gains of roughly \u003cstrong data-start=\"2613\" data-end=\"2627\"\u003e+20–30 whp\u003c\/strong\u003e depending on catted vs. catless, fuel quality, and paired rear exhaust. (Community and vendor data on GT3 header + tune packages support these ranges.) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003cspan class=\"ms-1 inline-flex max-w-full items-center relative top-[-0.094rem] animate-[show_150ms_ease-in]\" data-testid=\"webpage-citation-pill\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2819\" data-end=\"3032\"\u003e*Actual results vary with dyno type, ambient conditions, OPF\/GPF presence, rear-section choice, and calibration strategy. Ranges above reflect reputable vendor dynos and community testing on the 992 GT3 platform.\u003c\/p\u003e\n\u003ch3 data-start=\"3034\" data-end=\"3050\"\u003eWhy It Works\u003c\/h3\u003e\n\u003cp data-start=\"3051\" data-end=\"3447\"\u003eLong primaries and equal length \u003cstrong data-start=\"3083\" data-end=\"3118\"\u003etime the negative pressure wave\u003c\/strong\u003e to arrive as the exhaust valve opens on the next cycle—this \u003cstrong data-start=\"3179\" data-end=\"3188\"\u003epulls\u003c\/strong\u003e spent gases out and \u003cstrong data-start=\"3209\" data-end=\"3244\"\u003ehelps draw the intake charge in\u003c\/strong\u003e. The longer, smoother path \u003cstrong data-start=\"3272\" data-end=\"3296\"\u003ereduces backpressure\u003c\/strong\u003e where the GT3 breathes hardest (upper mid-range to redline), so you feel earlier torque, a stronger sweep to 9k, and cleaner gear-to-gear transitions.\u003c\/p\u003e\n\u003ch3 data-start=\"3449\" data-end=\"3460\"\u003eOptions\u003c\/h3\u003e\n\u003cul data-start=\"3461\" data-end=\"3772\"\u003e\n\u003cli data-start=\"3461\" data-end=\"3547\"\u003e\n\u003cp data-start=\"3463\" data-end=\"3547\"\u003e\u003cstrong data-start=\"3463\" data-end=\"3481\"\u003eConfiguration:\u003c\/strong\u003e 200-cell catted (street-friendly) \u003cstrong data-start=\"3516\" data-end=\"3522\"\u003eor\u003c\/strong\u003e catless (competition).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3548\" data-end=\"3629\"\u003e\n\u003cp data-start=\"3550\" data-end=\"3629\"\u003e\u003cstrong data-start=\"3550\" data-end=\"3563\"\u003eHardware:\u003c\/strong\u003e new multi-layer steel gaskets and high-temp fasteners included.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3630\" data-end=\"3772\"\u003e\n\u003cp data-start=\"3632\" data-end=\"3772\"\u003e\u003cstrong data-start=\"3632\" data-end=\"3650\"\u003eCompatibility:\u003c\/strong\u003e mates to OE or aftermarket center\/rear sections; ECU calibration recommended for catless use or to maximize catted gains.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yonristic Performance","offers":[{"title":"Free Flow (Race Edition)","offer_id":46034887737578,"sku":"YR-4122-POR-FRE","price":2499.0,"currency_code":"USD","in_stock":true},{"title":"200 Cells Catted (Street Edition)","offer_id":46034887770346,"sku":"YR-1065-POR-200","price":2999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0477\/0427\/7142\/files\/992GT3LongtubeHeader.jpg?v=1778282229","url":"https:\/\/www.k2-industries.com\/en-ca\/products\/porsche-992-gt3-gt3rs-competition-long-tube-header-vanta-yonristic-performance","provider":"K2 Industries","version":"1.0","type":"link"}