{"product_id":"milltek-active-valved-cat-back-with-x-pipe-system-brushed-titanium-tips-2026-mustang-5-0l-gt-fastback","title":"Milltek Active Valved Cat-Back with X-Pipe System (Brushed Titanium Tips) – 2026 Mustang 5.0L GT Fastback","description":"\u003cdiv class=\"description\"\u003e\n    \u003cp\u003eThe \u003cstrong\u003eMilltek Active Valved Cat-Back with X-Pipe System\u003c\/strong\u003e featuring \u003cstrong\u003eBrushed Titanium Tips\u003c\/strong\u003e is built for Mustang GT owners who want refined tone, improved flow, and a clean, motorsport-grade finish. This isn’t just about looking good—it’s about waking up your 5.0L Coyote with a sharper edge and more responsive character, all while keeping the daily-drive functionality of factory active exhaust.\u003c\/p\u003e\n    \n    \u003ch2\u003eWhat It Solves\u003c\/h2\u003e\n    \u003cp\u003eThe stock cat-back on the 2026 Mustang GT is soft around the edges—muffled tone, restricted airflow, and a sound profile that’s more rental-spec than road-weapon. This system replaces the bottlenecks with free-flowing T304 stainless steel, a high-velocity \u003cstrong\u003eX-pipe crossover\u003c\/strong\u003e, and \u003cstrong\u003equad brushed titanium-finish tips\u003c\/strong\u003e that add a lightweight, purpose-built vibe. Plus, it retains your active exhaust control, so you get volume when you want it, and subtlety when you don’t.\u003c\/p\u003e\n    \n    \u003ch2\u003eWhat It Improves Over Stock\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003eDitching factory resonators and mufflers frees up \u003cstrong\u003ehorsepower and throttle response\u003c\/strong\u003e\n\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eX-pipe design\u003c\/strong\u003e enhances high-RPM clarity and gives off a cleaner, more exotic sound than the stock H-pipe\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBrushed titanium-finish tips\u003c\/strong\u003e deliver high-end style without flash—track-ready and understated\u003c\/li\u003e\n      \u003cli\u003eMaintains \u003cstrong\u003eactive exhaust valve compatibility\u003c\/strong\u003e for drive mode-based sound adjustability\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eYou’ll find this setup in our full \u003ca href=\"https:\/\/www.lethalperformance.com\/shop-now\/vehicle-selector\/ford-mustang-v8-gt\/2026-2025-mustang-gt\/exhaust\/catbacks\"\u003e2026-2025 Mustang GT Cat-Back Exhausts\u003c\/a\u003e lineup for good reason—it walks the line between factory refinement and aftermarket aggression.\u003c\/p\u003e\n    \n    \u003ch2\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eActive Exhaust Valves\u003c\/strong\u003e: Keeps your OEM valve system fully functional—open it up on command or stay quiet during cold starts.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eX-Pipe Midsection\u003c\/strong\u003e: Delivers that crisp, Euro-style tone without drone; sounds refined under load and aggressive at WOT.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBrushed Titanium Tips\u003c\/strong\u003e: Motorsports-inspired and corrosion-resistant, these quad tips finish the system with an OEM+ look.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDurable T304 Stainless Steel\u003c\/strong\u003e: Handles daily use, heat cycles, and road grime with no compromise in flow or strength.\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \u003cp\u003eCheck out other finishes in our \u003ca href=\"https:\/\/www.lethalperformance.com\/shop-now\/vehicle-selector\/ford-mustang-v8-gt\/2026-2025-mustang-gt\/exhaust\/catbacks\/milltek\"\u003eMilltek cat-back exhaust systems\u003c\/a\u003e if you’re after a more aggressive or stealthy look.\u003c\/p\u003e\n    \n    \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: T304 stainless steel with brushed titanium-finish quad tips\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWeight Savings\u003c\/strong\u003e: Yes – reduced muffler mass and more efficient pipe routing save weight over stock\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAdjustability\u003c\/strong\u003e: Fully integrates with the factory active valve system for quiet\/cruise\/loud modes\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAdditional Required Components\u003c\/strong\u003e: None—uses OEM valve motors\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003ePart Number\u003c\/strong\u003e: SSXFD427\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch2\u003eWho This is For\u003c\/h2\u003e\n    \u003cp\u003eDesigned for \u003cstrong\u003e2026 Mustang GT Fastback owners\u003c\/strong\u003e who have the \u003cstrong\u003efactory active exhaust\u003c\/strong\u003e, this system is for anyone who wants a more responsive exhaust tone that doesn’t scream look-at-me. It’s a smart upgrade for street-driven builds that already have—or plan to add—cold air intakes, tunes, or headers. If your GT didn’t come with active exhaust from the factory, this system isn’t compatible.\u003c\/p\u003e\n    \n    \u003ch2\u003eFitment \u0026amp; Installation Notes\u003c\/h2\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eVehicle Compatibility\u003c\/strong\u003e: 2026 Ford Mustang GT Fastback (5.0L V8), manual and automatic\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDirect Fitment or Requires Modifications\u003c\/strong\u003e: Direct bolt-on; no cutting, welding, or fabrication needed\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eInstallation Requirements\u003c\/strong\u003e:\n        \u003cul\u003e\n          \u003cli\u003eReuse OEM active exhaust valve actuators\u003c\/li\u003e\n          \u003cli\u003eNo tuning or recalibration required\u003c\/li\u003e\n          \u003cli\u003e\n\u003cstrong\u003eProfessional installation recommended\u003c\/strong\u003e for proper fit and valve motor positioning\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003ch3\u003eWarnings\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWill not work with base exhaust setups\u003c\/strong\u003e—requires OEM active exhaust\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eNot compatible with convertibles\u003c\/strong\u003e due to chassis and clearance differences\u003c\/li\u003e\n      \u003cli\u003eFor full performance gains, pair with headers or high-flow mid-pipes—don’t expect maximum output with stock manifolds\u003c\/li\u003e\n      \u003cli\u003eThis is a full cat-back system—\u003cstrong\u003emost buyers should go this route instead of mixing parts\u003c\/strong\u003e\n\u003c\/li\u003e\n    \u003c\/ul\u003e\n    \n    \u003cp\u003eIf you’re chasing a refined tone with better flow, daily drivability, and lightweight, understated tips that actually belong on a modern muscle car, this brushed titanium Milltek X-pipe system delivers. It’s balanced, sharp, and built for people who know exactly what they’re installing—and why.\u003c\/p\u003e    \n\u003c\/div\u003e\n\u003cstyle\u003e\n    .description a {\n        color: #00a2e5 !important;\n    }\n    .description ul {\n        list-style: disc !important;\n        margin-left: 20px !important;\n        margin-bottom: 30px !important;\n    }\n    .description li {\n        float: none !important;\n    }\n    .description h2 {\n        margin-bottom: 20px;\n        display: block !important;\n    }\n    .description iframe {\n        margin: 30px auto;\n    }\n    .description hr {\n        margin: 30px auto;\n    }\n\u003c\/style\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":48146748309762,"sku":"MTK-SSXFD427","price":3594.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0618\/0354\/files\/ssxfd427.jpg?v=1785009129","url":"https:\/\/www.lethalperformance.com\/products\/milltek-active-valved-cat-back-with-x-pipe-system-brushed-titanium-tips-2026-mustang-5-0l-gt-fastback","provider":"Lethal Performance","version":"1.0","type":"link"}