{"product_id":"exhaust-kit-for-ford-f-150-1987-1996-4-9l","title":"Exhaust Kit for Ford F-150 (1987-1996) 4.9L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eMandrel-Bent Dual Muffler-Back Exhaust Kit for 1987-1996 Ford F-150 (OBS)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The dual muffler-back exhaust kit replaces the restrictive stock single tailpipe and baffled silencer on the 1987-1996 Ford F-150 to reduce exhaust backpressure and optimize scavenging on the inline-six engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-150 Exhaust Restriction\u003c\/h3\u003e\n\u003cp\u003eFactory exhaust configurations on the \u003cstrong\u003eOBS\u003c\/strong\u003e F-150 rely on narrow-diameter, crush-bent tubing and heavily baffled OEM mufflers. Behind the catalytic converter, these restrictive press-bends create turbulent exhaust flow, choke low-RPM torque output on the \u003cstrong\u003eFord 300 Inline-6\u003c\/strong\u003e, and trap thermal energy under the bed. Decades of heat cycling also leave stock mild-steel joints and hangers severely corroded.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis kit upgrades the rear section with a high-flow Flowsound two-chamber muffler engineered with a single 3-inch inlet and split dual 2.5-inch outlets. The tailpipes are mandrel-bent from 2.5-inch aluminized steel to preserve uniform internal diameter and eliminate restrictive pinch points. Designed to exit parallel to the frame rails, the geometry maintains clearance for the factory receiver hitch and OEM-diameter spare tire 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;\"\u003e1987-1996 Ford F-150\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;\"\u003eFord 300 Inline-6 (4.9L) \/ OBS\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;\"\u003e145 hp \/ 265 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\u003e1987-1996 Ford F-150 4.9L Gasoline (Factory Single-Inlet Muffler Models Only)\u003c\/li\u003e\n  \u003cli\u003e1987-1996 Ford F-150 4.9L Flex-Fuel (Factory Single-Inlet Muffler Models Only)\u003c\/li\u003e\n  \u003cli\u003eFits all factory wheelbase lengths (Standard Cab, SuperCab, Short\/Long Bed)\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 OBS F-150?\u003c\/h4\u003e\n\u003cp\u003eYes, this is designed for the 1987-1996 Ford F-150 equipped with the \u003cstrong\u003eFord 300 Inline-6\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes V8 models, configurations with dual-inlet factory mufflers, and any system modified ahead of the muffler inlet.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs this exhaust kit a direct bolt-on installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this is not a direct bolt-on system; professional installation is recommended as pipe fabrication or trimming may be required, and non-stock suspension or tire setups will alter clearance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Truck Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for working trucks, this aluminized steel dual system delivers the corrosion resistance, thermal capacity, and low-RPM exhaust velocity required for heavy hauling and sustained towing.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67562633920760,"sku":"DS-E3FA73BF2","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-150-1987-1996-4-9l-1.jpg?v=1790987916","url":"https:\/\/performancechiptuning.com\/es\/products\/exhaust-kit-for-ford-f-150-1987-1996-4-9l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}