{"product_id":"exhaust-kit-for-ford-f-250-1998-1999-5-4l","title":"Exhaust Kit for Ford F-250 (1998-1999) 5.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Dual Muffler-Back Exhaust Kit for 1998-1999 Ford F-250 (PN96)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The dual muffler-back exhaust kit replaces the restrictive factory single tailpipe and baffled silencer on the 1998-1999 Ford F-250 to lower backpressure, accelerate exhaust velocity, and improve engine scavenging under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-250 Exhaust Restriction\u003c\/h3\u003e\n\u003cp\u003eFrom the factory, the 1998-1999 Ford F-250 equipped with the \u003cstrong\u003e5.4L Triton (Modular 2V)\u003c\/strong\u003e V8 routes exhaust through a single-inlet, highly baffled OEM chambered muffler paired with narrow, crush-bent tubing. Crush-bent pipe geometry creates localized neck-downs, increasing parasitic pumping losses and trapping thermal energy near the rear axle. Under sustained towing or heavy hauling, this excessive backpressure restricts cylinder scavenging, increases combustion chamber temperatures, and stifles throttle response on the \u003cstrong\u003ePN96\u003c\/strong\u003e platform.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis dual muffler-back system resolves factory flow bottlenecks by routing spent gases through a free-flowing Flowsound 2-chamber muffler utilizing a 3.0-inch inlet and dual 2.5-inch outlets. The tailpipes are manufactured from heavy-duty 2.5-inch aluminized steel and shaped using CNC mandrel bending, which preserves consistent internal pipe diameter across every radius without wall collapse. Designed with a dual rear-exit path parallel to the frame rails, the geometry maintains critical clearance around OEM spare tires and factory receiver hitches across all wheelbase configurations.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Flowsound 2-chamber muffler (single 3\" inlet, dual 2.5\" outlets)\u003c\/li\u003e\n  \u003cli\u003e2 aluminized mandrel-bent two-piece 2.5\" tail pipes (slip-together)\u003c\/li\u003e\n  \u003cli\u003e8 muffler clamps\u003c\/li\u003e\n  \u003cli\u003e1 larger exhaust clamp\u003c\/li\u003e\n  \u003cli\u003e4 rubber-insulated hangers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1998-1999 Ford F-250\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e5.4L Triton V8 \/ PN96\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e235 hp \/ 330 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1998-1999 Ford F-250 Base 5.4L V8 Gas (Factory Single-Inlet Muffler Only)\u003c\/li\u003e\n  \u003cli\u003e1998-1999 Ford F-250 XL 5.4L V8 Gas (Factory Single-Inlet Muffler Only)\u003c\/li\u003e\n  \u003cli\u003e1998-1999 Ford F-250 XLT 5.4L V8 Gas (Factory Single-Inlet Muffler Only)\u003c\/li\u003e\n  \u003cli\u003e1998-1999 Ford F-250 Lariat 5.4L V8 Gas (Factory Single-Inlet Muffler Only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the PN96 F-250?\u003c\/h4\u003e\n\u003cp\u003eYes, this fits the 1998-1999 Ford F-250 equipped with the \u003cstrong\u003e5.4L Triton\u003c\/strong\u003e engine. \u003cstrong\u003eDoes not fit models equipped with CNG, LPG, or bi-fuel systems, or trucks with dual-inlet factory mufflers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs this exhaust system a direct bolt-on installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this is not a direct bolt-on kit; an experienced installer may need to cut or fabricate adapter pipe sections ahead of the muffler, and aftermarket suspension, wheel, or tire configurations can alter clearance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Truck Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe towing cycles and off-camber frame flex, this aluminized steel dual exhaust configuration ensures reliable thermal evacuation and rigid structural mounting under extreme commercial duty.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562639589624,"sku":"DS-E0AKFDX2R","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-kit-for-ford-f-250-1998-1999-5-4l-1.jpg?v=1790988382","url":"https:\/\/performancechiptuning.com\/es\/products\/exhaust-kit-for-ford-f-250-1998-1999-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}