{"product_id":"kyb-5640021-monomax-front-strut-ford-f150","title":"KYB 2021+ Ford F150 4WD (Ex. Raptor\/Tremor \u0026 w\/o Elec. Susp.) MonoMax Gas Strut - Front","description":"\u003ch4\u003eUpgrade Ride Control On Your Ford F-150 4WD\u003c\/h4\u003e\n\u003cp\u003eThe KYB MonoMax front strut delivers up to 40 percent more damping force than a factory twin-tube design, giving F-150 4WD owners sharper handling and reduced body roll. KYB5640021 is engineered as a direct replacement for trucks without the electronic suspension package, restoring OE ride height while adding a firmer performance feel.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eKYB5640021 uses a monotube gas charged design for faster response\u003c\/li\u003e\n\u003cli\u003eDelivers up to 40 percent more damping over OE twin-tube struts\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on replacement, no modification required\u003c\/li\u003e\n\u003cli\u003eKYB5640021 restores factory ride height and handling characteristics\u003c\/li\u003e\n\u003cli\u003eLarger piston diameter reduces heat buildup during extended driving\u003c\/li\u003e\n\u003cli\u003eBacked by KYB testing standards for durability and consistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2024\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eXL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2024\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eXLT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2024\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eLariat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2021-2024\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eF-150\u003c\/td\u003e\n\u003ctd\u003eKing Ranch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003e5640021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKYB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMonoMax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eFront\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign\u003c\/td\u003e\n\u003ctd\u003eMonotube gas charged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eNot publicly listed by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOne KYB5640021 MonoMax front strut assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAbout KYB\u003c\/h4\u003e\n\u003cp\u003eKYB has manufactured shocks and struts for original equipment and aftermarket applications for decades, supplying ride control components trusted by truck and SUV owners across North America. The MonoMax line applies OE manufacturing standards to a monotube design built for trucks that need extra control under load.\u003c\/p\u003e\n\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the KYB5640021?\u003c\/strong\u003e\u003cp\u003eThe KYB5640021 is a MonoMax front strut built for 2021 and newer Ford F-150 4WD trucks without the electronic suspension package. Its monotube gas charged design delivers up to 40 percent more damping than a factory twin-tube strut for sharper handling.\u003c\/p\u003e\n\u003cstrong\u003eWill this fit my F-150 if it has the Raptor or Tremor package?\u003c\/strong\u003e\u003cp\u003eNo, this strut is designed for standard F-150 4WD trucks and excludes Raptor and Tremor trims, which use different suspension tuning.\u003c\/p\u003e\n\u003cstrong\u003eDoes this work with the electronic suspension option?\u003c\/strong\u003e\u003cp\u003eNo, it's built for trucks without the electronic suspension package.\u003c\/p\u003e\n\u003cstrong\u003eIs this a direct bolt-on replacement?\u003c\/strong\u003e\u003cp\u003eYes, it installs in the factory strut location without modification.\u003c\/p\u003e\n\u003cstrong\u003eDo I need to transfer my coil spring to the new strut?\u003c\/strong\u003e\u003cp\u003eYes, the factory coil spring and upper mount need to be moved over to the new strut during installation.\u003c\/p\u003e\n\u003cstrong\u003eWill my ride height change after installing this?\u003c\/strong\u003e\u003cp\u003eNo, it's designed to restore factory ride height while adding a firmer performance feel.\u003c\/p\u003e\n\u003cstrong\u003eCan I install just one side?\u003c\/strong\u003e\u003cp\u003eIt's sold individually, but KYB recommends replacing struts in pairs for even handling.\u003c\/p\u003e\n\u003cstrong\u003eWill this make my truck ride stiffer than stock?\u003c\/strong\u003e\u003cp\u003eThe monotube design does add more damping force than the factory twin-tube strut, so many drivers notice sharper handling with reduced body roll.\u003c\/p\u003e\n\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRaise the front of the truck and support it on jack stands.\u003c\/li\u003e\n\u003cli\u003eRemove the front wheel and disconnect the sway bar link and brake line bracket.\u003c\/li\u003e\n\u003cli\u003eRemove the upper strut mount nuts and lower strut bolts to free the factory strut.\u003c\/li\u003e\n\u003cli\u003eTransfer the coil spring and upper mount from the factory strut to the KYB5640021.\u003c\/li\u003e\n\u003cli\u003eInstall the KYB5640021 assembly and torque all fasteners to factory specification.\u003c\/li\u003e\n\u003cli\u003eReinstall the wheel and repeat on the opposite side if replacing in pairs.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"KYB","offers":[{"title":"Default Title","offer_id":46138383597647,"sku":"KYB5640021","price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/kyb5640021-hero.webp?v=1784725995","url":"https:\/\/www.blackopsautoworks.com\/products\/kyb-5640021-monomax-front-strut-ford-f150","provider":"Black Ops Auto Works","version":"1.0","type":"link"}