{"product_id":"zone-offroad-99-04-ford-f-250-f-350-leaf-spring-4in-sd-6in-exc","title":"Zone Offroad 99-04 Ford F-250\/F-350 Leaf Spring 4in SD\/6in Exc.","description":"\u003ch4\u003eAdd Lift Without Sacrificing Ride Quality\u003c\/h4\u003e\n\u003cp\u003eThe Zone Offroad ZONF0401 multi-leaf spring pack is engineered to deliver 4 inches of lift on Ford Super Duty trucks and 6 inches of lift on the Ford Excursion while keeping the factory-like ride manufacturers spend years tuning. Built as a direct replacement front leaf spring, the ZONF0401 uses a 5-leaf design with anti-friction pads and center leaf spacer plates to reduce inter-leaf friction, control spring wrap, and extend service life. OE-style rubber bushings arrive pre-installed, so the ZONF0401 bolts in using factory mounting hardware without requiring a separate bushing purchase. Every ZONF0401 leaf spring meets or exceeds original equipment load ratings, giving Super Duty and Excursion owners a lift solution that supports plows, winches, and heavy front-end accessories without excessive sag.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eZONF0401 delivers 4 inches of lift on F-250\/F-350 Super Duty and 6 inches of lift on Excursion\u003c\/li\u003e\n\u003cli\u003e5-leaf pack construction meets or exceeds OE load capacity ratings\u003c\/li\u003e\n\u003cli\u003eAnti-friction pads reduce inter-leaf noise and friction for a smoother ride\u003c\/li\u003e\n\u003cli\u003eCenter leaf spacer plates maintain proper leaf alignment under load\u003c\/li\u003e\n\u003cli\u003eOE-style rubber bushings pre-installed for direct bolt-in installation\u003c\/li\u003e\n\u003cli\u003eSold individually — order two ZONF0401 units for a complete front axle pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2004\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-250 Super Duty 4WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1999-2004\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-350 Super Duty 4WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2000-2005\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eExcursion 4WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003eZONF0401\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e711745598973\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Leafs\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Size\u003c\/td\u003e\n\u003ctd\u003e5\/8 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye to Eye\u003c\/td\u003e\n\u003ctd\u003e52.38 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFree Height\u003c\/td\u003e\n\u003ctd\u003e8.13 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye to Center Front\u003c\/td\u003e\n\u003ctd\u003e25.88 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye to Center Rear\u003c\/td\u003e\n\u003ctd\u003e26.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLift Provided\u003c\/td\u003e\n\u003ctd\u003e4 in (Super Duty) \/ 6 in (Excursion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBushings\u003c\/td\u003e\n\u003ctd\u003eOE-style rubber, pre-installed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSold As\u003c\/td\u003e\n\u003ctd\u003eIndividually\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1x ZONF0401 multi-leaf spring pack with pre-installed bushings\u003c\/li\u003e\n\u003cli\u003eAnti-friction pads and center leaf spacer plates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout Zone Offroad\u003c\/h4\u003e\n\u003cp\u003eZone Offroad has spent decades engineering suspension lift systems for trucks and SUVs, focusing on components that hold up to real-world towing, hauling, and off-road use. The ZONF0401 leaf spring reflects that approach, pairing OE-matching or exceeding load ratings with hardware that installs using stock mounting points, so Super Duty and Excursion owners get predictable ride quality at their chosen lift height.\u003c\/p\u003e\n\u003ch4\u003eRelated Parts\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eZone Offroad Nitro Shock - 27.40in x 16.20in x 2-3\/8in - S50\/EB2\u003c\/li\u003e\n\u003cli\u003eZone Offroad Nitro Shock - 27.90in x 16.55in x 2-3\/8in - EB1\/EB1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the ZONF0401?\u003c\/strong\u003e\n\u003cp\u003eThe ZONF0401 is a Zone Offroad 5-leaf front leaf spring pack that provides 4 inches of lift on 1999-2004 Ford F-250\/F-350 Super Duty trucks and 6 inches of lift on 2000-2005 Ford Excursion, sold individually with OE-style bushings pre-installed.\u003c\/p\u003e\n\u003cstrong\u003eDoes the ZONF0401 fit 2WD trucks?\u003c\/strong\u003e\n\u003cp\u003eNo, the ZONF0401 is designed specifically for 4WD Super Duty and Excursion applications and is not intended for 2WD front suspension.\u003c\/p\u003e\n\u003cstrong\u003eHow many ZONF0401 springs do I need per truck?\u003c\/strong\u003e\n\u003cp\u003eThe ZONF0401 is sold individually, so a complete front axle installation requires two units, one per side.\u003c\/p\u003e\n\u003cstrong\u003eDoes the ZONF0401 include bushings?\u003c\/strong\u003e\n\u003cp\u003eYes, OE-style rubber bushings come pre-installed in each ZONF0401 leaf pack, so no separate bushing purchase is needed for a direct bolt-in install.\u003c\/p\u003e\n\u003cstrong\u003eWill the ZONF0401 affect ride quality?\u003c\/strong\u003e\n\u003cp\u003eThe ZONF0401 is engineered to meet or exceed OE load ratings while using anti-friction pads and spacer plates, which is designed to preserve a factory-like ride at the new lift height.\u003c\/p\u003e\n\u003cstrong\u003eCan the ZONF0401 support a front plow or winch?\u003c\/strong\u003e\n\u003cp\u003eBecause the ZONF0401 meets or exceeds original equipment load capacity, it is built to support the added front-end weight from plows, winches, and other heavy accessories.\u003c\/p\u003e\n\u003cstrong\u003eDoes installing the ZONF0401 require cutting or drilling?\u003c\/strong\u003e\n\u003cp\u003eThe ZONF0401 is designed as a direct bolt-in replacement using factory mounting hardware, so no cutting or drilling is required on the Super Duty or Excursion frame.\u003c\/p\u003e\n\u003cstrong\u003eWhat lift height does the ZONF0401 provide on an Excursion versus a Super Duty?\u003c\/strong\u003e\n\u003cp\u003eThe same ZONF0401 leaf pack provides 6 inches of lift when installed on a Ford Excursion and 4 inches of lift when installed on an F-250\/F-350 Super Duty due to the difference in factory ride height between the two platforms.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSupport the vehicle on jack stands and remove the front wheel on the side being serviced.\u003c\/li\u003e\n\u003cli\u003eSupport the front axle and disconnect the shock, sway bar link, and any other components attached to the factory leaf spring.\u003c\/li\u003e\n\u003cli\u003eRemove the factory leaf spring by unbolting the front eye bolt, rear shackle, and center U-bolts.\u003c\/li\u003e\n\u003cli\u003ePosition the ZONF0401 leaf spring using the factory mounting locations and torque the front eye bolt and rear shackle to factory specifications.\u003c\/li\u003e\n\u003cli\u003eReinstall the center U-bolts, shock, and sway bar link, then torque all hardware to factory specifications.\u003c\/li\u003e\n\u003cli\u003eRepeat on the opposite side using a second ZONF0401 unit, then lower the vehicle and perform a wheel alignment.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eProp 65 Warning\u003c\/h4\u003e\n\u003cp\u003eThis product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/p\u003e\n","brand":"Zone Offroad","offers":[{"title":"Default Title","offer_id":46355846955087,"sku":"ZORZONF0401","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/ZORZONF0401.jpg?v=1786042572","url":"https:\/\/www.blackopsautoworks.com\/products\/zone-offroad-99-04-ford-f-250-f-350-leaf-spring-4in-sd-6in-exc","provider":"Black Ops Auto Works","version":"1.0","type":"link"}