{"product_id":"porsche-997-1-carrera-exhaust-mufflers-race-headers-yonristic-performance","title":"Porsche 997.1 Carrera Exhaust Mufflers \u0026 Race Headers - Yonristic Performance","description":"\u003cp data-start=\"94\" data-end=\"165\"\u003e\u003cstrong data-start=\"94\" data-end=\"165\"\u003eCenter X-pipe clarity. Tuned side cans. True PSE valve integration.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"167\" data-end=\"863\"\u003eThe 997.1 Carrera family (3.6\/3.8 NA flat-six) is one of the sweetest-revving 911s ever built, but the factory exhaust keeps a lid on its character. The big center canister and conservative cross-over dull throttle response, flatten the midrange, and leave the note a little hollow—more hush than heartbeat. Our Yonristic system replaces the entire center section with a \u003cstrong data-start=\"538\" data-end=\"558\"\u003etrue X-pipe core\u003c\/strong\u003e flanked by \u003cstrong data-start=\"570\" data-end=\"594\"\u003etuned high-flow cans\u003c\/strong\u003e, then routes to compact \u003cstrong data-start=\"619\" data-end=\"636\"\u003eside mufflers\u003c\/strong\u003e that preserve tone while controlling volume. The result is the sound the 997 deserves: \u003cstrong data-start=\"724\" data-end=\"800\"\u003ecleaner harmonics, fuller midrange, and a hard-edged, motorsport top end\u003c\/strong\u003e—without the droning that plagues straight-through conversions.\u003c\/p\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/YT3rBl1vqYQ?si=-IBRB10Cyb-nL0no\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003ch3 data-start=\"865\" data-end=\"912\"\u003eDesign \u0026amp; Sound (what you see in the photos)\u003c\/h3\u003e\n\u003cul data-start=\"913\" data-end=\"1621\"\u003e\n\u003cli data-start=\"913\" data-end=\"1095\"\u003e\n\u003cp data-start=\"915\" data-end=\"1095\"\u003e\u003cstrong data-start=\"915\" data-end=\"938\"\u003eTrue Center X-Pipe:\u003c\/strong\u003e Positioned at the pulse-exchange sweet spot, the X equalizes pressure between banks, improving scavenging and sharpening the engine’s attack as revs rise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1096\" data-end=\"1271\"\u003e\n\u003cp data-start=\"1098\" data-end=\"1271\"\u003e\u003cstrong data-start=\"1098\" data-end=\"1132\"\u003eTuned High-Flow Cans (center):\u003c\/strong\u003e Sized and placed to knock out the 997’s boom frequencies; they smooth the note under cruise while keeping the exhaust path free-flowing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1272\" data-end=\"1455\"\u003e\n\u003cp data-start=\"1274\" data-end=\"1455\"\u003e\u003cstrong data-start=\"1274\" data-end=\"1300\"\u003eCompact Side Mufflers:\u003c\/strong\u003e Unpacked, straight-through internals maintain velocity and give the car a rich, classic 911 timbre at light load with a fierce wail when you lean on it.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1456\" data-end=\"1621\"\u003e\n\u003cp data-start=\"1458\" data-end=\"1621\"\u003e\u003cstrong data-start=\"1458\" data-end=\"1478\"\u003eNo Drone Tuning:\u003c\/strong\u003e Geometry and can volumes are modeled around cabin resonance zones, so highway cruising stays calm while exterior character remains aggressive.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1623\" data-end=\"1672\"\u003eValve Control — OEM behavior, plug-and-play\u003c\/h3\u003e\n\u003cp data-start=\"1673\" data-end=\"1933\"\u003eWe retain the factory \u003cstrong data-start=\"1695\" data-end=\"1738\"\u003ePSE valve locations and actuator mounts\u003c\/strong\u003e; on PSE-equipped cars the behavior is fully preserved. For non-PSE cars, our optional \u003cstrong data-start=\"1825\" data-end=\"1845\"\u003eremote valve kit\u003c\/strong\u003e gives you two characters on demand—refined for long trips, or wide-open for back roads.\u003c\/p\u003e\n\u003ch3 data-start=\"1935\" data-end=\"1966\"\u003eMaterials \u0026amp; Craftsmanship\u003c\/h3\u003e\n\u003cp data-start=\"1967\" data-end=\"2383\"\u003eBuilt from \u003cstrong data-start=\"1978\" data-end=\"2006\"\u003eAISI 304 stainless steel\u003c\/strong\u003e for daily-driven durability (titanium available by request), each system is derived from \u003cstrong data-start=\"2096\" data-end=\"2108\"\u003e3D scans\u003c\/strong\u003e of the 997 underbody for perfect alignment. \u003cstrong data-start=\"2153\" data-end=\"2190\"\u003eCNC-machined flanges and brackets\u003c\/strong\u003e lock to factory points, while \u003cstrong data-start=\"2221\" data-end=\"2246\"\u003eback-purged TIG welds\u003c\/strong\u003e ensure smooth internal transitions and long life under heat cycling. Mandrel bends keep the cross-section consistent from inlet to tips.\u003c\/p\u003e\n\u003ch3 data-start=\"2385\" data-end=\"2433\"\u003ePerformance — realistic gains you can feel\u003c\/h3\u003e\n\u003cp data-start=\"2434\" data-end=\"2933\"\u003eOn a healthy 997.1, a well-designed X-pipe cat-back typically delivers \u003cstrong data-start=\"2505\" data-end=\"2534\"\u003e+8–12 whp and +8–12 lb-ft\u003c\/strong\u003e with noticeably crisper throttle response. Pairing our system with \u003cstrong data-start=\"2602\" data-end=\"2625\"\u003e200-cell sport cats\u003c\/strong\u003e and a quality ECU calibration commonly lifts total improvements into the \u003cstrong data-start=\"2699\" data-end=\"2713\"\u003e+15–25 whp\u003c\/strong\u003e range, with a broader, cleaner pull to redline. The headline, however, is \u003cstrong data-start=\"2788\" data-end=\"2815\"\u003etone quality and weight\u003c\/strong\u003e: deleting the bulky center canister drops mass and replaces the muted stock voice with a sharp, classic flat-six cry.\u003c\/p\u003e\n\u003ch3 data-start=\"2935\" data-end=\"2958\"\u003eFitment \u0026amp; Options\u003c\/h3\u003e\n\u003cul data-start=\"2959\" data-end=\"3359\"\u003e\n\u003cli data-start=\"2959\" data-end=\"3094\"\u003e\n\u003cp data-start=\"2961\" data-end=\"3094\"\u003e\u003cstrong data-start=\"2961\" data-end=\"2972\"\u003eModels:\u003c\/strong\u003e 997.1 \u003cstrong data-start=\"2979\" data-end=\"3015\"\u003eCarrera \/ Carrera S \/ Carrera 4S\u003c\/strong\u003e (and \u003cstrong data-start=\"3021\" data-end=\"3028\"\u003eGTS\u003c\/strong\u003e applications supported—confirm valve\/connector style at order).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3095\" data-end=\"3174\"\u003e\n\u003cp data-start=\"3097\" data-end=\"3174\"\u003e\u003cstrong data-start=\"3097\" data-end=\"3106\"\u003eTips:\u003c\/strong\u003e Quad outlets in polished, satin black, burnt, or carbon finishes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3175\" data-end=\"3279\"\u003e\n\u003cp data-start=\"3177\" data-end=\"3279\"\u003e\u003cstrong data-start=\"3177\" data-end=\"3194\"\u003eInstallation:\u003c\/strong\u003e \u003cstrong data-start=\"3195\" data-end=\"3211\"\u003e100% bolt-on\u003c\/strong\u003e, reversible; uses factory mounting points; no cutting or welding.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3280\" data-end=\"3359\"\u003e\n\u003cp data-start=\"3282\" data-end=\"3359\"\u003e\u003cstrong data-start=\"3282\" data-end=\"3300\"\u003eCompatibility:\u003c\/strong\u003e Works with OE manifolds or aftermarket headers\/sport cats.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yonristic Performance","offers":[{"title":"AISI304 Stainless Steel \/ Catback System","offer_id":51568790470954,"sku":"YR-0786-POR-AIS","price":2599.0,"currency_code":"USD","in_stock":true},{"title":"AISI304 Stainless Steel \/ Catback + Free Flow Headers","offer_id":51568790503722,"sku":"YR-6405-POR-AIS","price":2899.0,"currency_code":"USD","in_stock":true},{"title":"AISI304 Stainless Steel \/ Catback + High Flow Headers (200 Cell)","offer_id":51568790536490,"sku":"YR-0702-POR-AIS","price":2999.0,"currency_code":"USD","in_stock":true},{"title":"TI-6AL-4V Titanium \/ Catback System","offer_id":51568790569258,"sku":"YR-6512-POR-TI-","price":3299.0,"currency_code":"USD","in_stock":true},{"title":"TI-6AL-4V Titanium \/ Catback + Free Flow Headers","offer_id":51568790602026,"sku":"YR-8725-POR-TI-","price":3599.0,"currency_code":"USD","in_stock":true},{"title":"TI-6AL-4V Titanium \/ Catback + High Flow Headers (200 Cell)","offer_id":51568790634794,"sku":"YR-5716-POR-TI-","price":3999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0990\/7103\/3642\/files\/385_c04a1c3e-76f5-4839-afdd-77e4fedb3b6e.jpg?v=1779395561","url":"https:\/\/equipmentleader.com\/products\/porsche-997-1-carrera-exhaust-mufflers-race-headers-yonristic-performance","provider":"Equipment Leader","version":"1.0","type":"link"}