{"product_id":"icon-v-s-2-5-aluminum-series-rear-shocks-internal-reservoir-for-1999-2","title":"ICON V.S. 2.5 Aluminum Series Rear Shocks Internal Reservoir for 1999-2026 Ford Super Duty 0-3\" Lift","description":"\u003cp class=\"product-lead\"\u003eThe ICON Vehicle Specific (V.S.) 2.5 Aluminum Series rear shocks with internal reservoir are a pair of nitrogen-charged monotube shocks engineered for 1999–2026 Ford Super Duty trucks running 0–3 inches of rear lift over stock. Each shock is valved and dimensioned specifically for this application, balancing off-road performance with on-road ride quality. These shocks do not fit F-350 and F-450 cab-and-chassis models.\u003c\/p\u003e\n\u003cp class=\"product-shipping-note\"\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e ICON parts ship direct from ICON Vehicle Dynamics, mostly by UPS Ground. Lead times vary by part and some items are built to order, so please allow extra time. We email tracking as soon as your order ships.\u003c\/p\u003e\n\n\u003ch2\u003eApplication-Specific Valving and Sizing\u003c\/h2\u003e\n\u003cp\u003eThe V.S. 2.5 Aluminum Series shocks are configured in both length and damping tune for the 1999–2026 Ford Super Duty rear suspension, rather than adapted from a universal platform. Application-specific valving calibrates the damping curve for the actual corner weights, suspension geometry, and lift range of this truck, so performance works as intended from the first mile whether the truck is loaded or empty, on pavement or trail.\u003c\/p\u003e\n\n\u003ch2\u003eMore Oil Volume, Better Heat Management\u003c\/h2\u003e\n\u003cp\u003eThe 2.5-inch aluminum body carries more oil volume than ICON's V.S. 2.0 Series shocks, which directly improves heat dissipation during sustained off-road use. Heat buildup causes fade in smaller shocks; the larger reservoir delays that fade and keeps damping consistent through longer runs. Premium-grade 5WT shock oil maintains consistent damping across a wide temperature range, so performance does not degrade in cold mornings or hot desert runs.\u003c\/p\u003e\n\n\u003ch2\u003eRebuildable and Revalveable Construction\u003c\/h2\u003e\n\u003cp\u003eEvery V.S. 2.5 Aluminum Series shock is 100% rebuildable and 100% revalveable. The one-piece impact-extruded 6061 aircraft-grade aluminum cylinder resists corrosion and holds tight tolerances for consistent finish over time. The 7\/8-inch induction-hardened, chrome-plated shock shaft resists bending and surface wear. PTFE-lined spherical bearings and application-specific mounting hardware are included. When damping needs change due to heavier payload, different terrain, or high-mileage wear, the shock can be serviced rather than replaced.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVehicle-specific valving:\u003c\/strong\u003e one-piece digressive piston tuned in length and damping for 1999–2026 Ford Super Duty rear suspension\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNitrogen-charged monotube with internal reservoir:\u003c\/strong\u003e consistent pressure and improved heat dissipation over twin-tube designs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e6061 aluminum construction:\u003c\/strong\u003e CNC-machined components and impact-extruded cylinder for corrosion resistance and consistent finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e7\/8\" hardened shaft:\u003c\/strong\u003e induction-hardened, chrome-plated for wear and bend resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePTFE spherical bearings:\u003c\/strong\u003e low-friction, application-specific mounting hardware included\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully rebuildable and revalveable:\u003c\/strong\u003e serviceable at end of life rather than disposable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n      \u003cth\u003eDetail\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBrand\u003c\/td\u003e\n      \u003ctd\u003eICON Vehicle Dynamics\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSKU\u003c\/td\u003e\n      \u003ctd\u003e37605P\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFitment\u003c\/td\u003e\n      \u003ctd\u003e1999–2026 Ford Super Duty (excludes F-350\/F-450 cab and chassis)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePosition\u003c\/td\u003e\n      \u003ctd\u003eRear\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLift Range\u003c\/td\u003e\n      \u003ctd\u003e0–3 inches over stock\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShock Body Diameter\u003c\/td\u003e\n      \u003ctd\u003e2.5 inches\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShaft Diameter\u003c\/td\u003e\n      \u003ctd\u003e7\/8 inch\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShaft Finish\u003c\/td\u003e\n      \u003ctd\u003eInduction hardened, chrome plated\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCylinder Material\u003c\/td\u003e\n      \u003ctd\u003e6061 aircraft-grade aluminum, impact extruded\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShock Oil\u003c\/td\u003e\n      \u003ctd\u003ePremium 5WT\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eReservoir Type\u003c\/td\u003e\n      \u003ctd\u003eInternal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eQuantity\u003c\/td\u003e\n      \u003ctd\u003ePair (2 shocks)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShipping Weight\u003c\/td\u003e\n      \u003ctd\u003e15 lb\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWho This Is For and Isn't\u003c\/h2\u003e\n\u003cp class=\"product-fit-yes\"\u003eThese shocks suit 1999–2026 Ford Super Duty owners running 0–3 inches of rear lift who want a rebuildable, application-tuned shock with more heat capacity than a 2.0-series unit, whether the truck sees regular trail use, towing, or mixed on- and off-road driving.\u003c\/p\u003e\n\u003cp class=\"product-fit-no\"\u003eThese shocks do not fit F-350 or F-450 cab-and-chassis models. They are rear shocks only and do not address front suspension. Buyers wanting user-adjustable compression damping should consider ICON's CDC Valve shocks instead, as this pair does not include a compression damping control valve.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Questions\u003c\/h2\u003e\n\u003ch3 class=\"product-faq-q\"\u003eWhich Ford Super Duty model years and body styles do these shocks fit?\u003c\/h3\u003e\n\u003cp class=\"product-faq-a\"\u003eThese ICON V.S. 2.5 Aluminum Series rear shocks fit 1999–2026 Ford Super Duty trucks with 0–3 inches of rear lift over stock. F-350 and F-450 cab-and-chassis models are explicitly excluded; all other Super Duty cab and bed configurations within those years are the intended application.\u003c\/p\u003e\n\n\u003ch3 class=\"product-faq-q\"\u003eWhat lift range are these shocks compatible with?\u003c\/h3\u003e\n\u003cp class=\"product-faq-a\"\u003eThe ICON V.S. 2.5 rear shocks for the Ford Super Duty are compatible with 0–3 inches of rear lift over the factory ride height. Running lift outside that range is not a supported application for this shock pair.\u003c\/p\u003e\n\n\u003ch3 class=\"product-faq-q\"\u003eCan these shocks be rebuilt or revalved after high-mileage use?\u003c\/h3\u003e\n\u003cp class=\"product-faq-a\"\u003eYes. The ICON V.S. 2.5 Aluminum Series shocks are 100% rebuildable and 100% revalveable, meaning worn seals, oil, or valving can be serviced by a qualified shop rather than requiring full shock replacement. This is a standard feature across ICON's shock absorber lineup.\u003c\/p\u003e\n\n\u003ch3 class=\"product-faq-q\"\u003eWhat is the advantage of the 2.5-inch body over ICON's 2.0 Series shocks?\u003c\/h3\u003e\n\u003cp class=\"product-faq-a\"\u003eThe larger 2.5-inch aluminum body holds more oil volume than the V.S. 2.0 Series shocks, which improves heat dissipation during sustained off-road use. More oil volume delays the heat fade that causes damping inconsistency in smaller shocks, keeping performance more consistent through longer or more demanding runs.\u003c\/p\u003e\n\n\u003ch3 class=\"product-faq-q\"\u003eDo these shocks include mounting hardware?\u003c\/h3\u003e\n\u003cp class=\"product-faq-a\"\u003eApplication-specific mounting hardware and PTFE-lined spherical bearings are included with the ICON V.S. 2.5 Aluminum Series rear shock pair. Shock boots are not included and are available separately.\u003c\/p\u003e\n\n\u003cp\u003eCalifornia Residents: This product contains chemicals known to the State of California to cause cancer, birth anomalies, or other reproductive harm (Proposition 65).\u003c\/p\u003e","brand":"ICON Vehicle Dynamics","offers":[{"title":"Default Title","offer_id":50633115861062,"sku":"37605P","price":812.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/2203\/1686\/files\/c65ecbbe9c432e12b5dad5343098f575-sq.jpg?v=1791974824","url":"https:\/\/terrainvault.com\/products\/icon-v-s-2-5-aluminum-series-rear-shocks-internal-reservoir-for-1999-2","provider":"TerrainVault","version":"1.0","type":"link"}