{"product_id":"brp-4130-upper-control-arms-dk-638993","title":"Dirt King 4130 Upper Control Arms | Sierra 2500 2011-2026","description":"\u003cdiv\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eDirt King 4130 Upper Control Arms – Built to Solve Real Problems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you drive a 2011–2025 Silverado or Sierra 2500HD (2WD or 4WD) and you're ready for a suspension upgrade, these 4130 UCAs are for you. We made them to tackle the exact issues we kept running into ourselves—squeaky bushings, joints that need constant attention, and geometry thrown off as soon as you add a lift. Whether you're daily driving, overlanding, rock crawling, or chasing desert trails, these UCAs handle it all.\u003c\/p\u003e\n\u003cp\u003eThese arms feature maintenance-free SilentSpin™ bushings that eliminate grease fittings and unwanted noise, along with heavy-duty Probearing ball joints for high articulation and superior strength. The ball joints are sealed to block out debris and finished with anodized caps. Built to maintain proper alignment from 0–3\" of lift, these arms also add roughly an inch of down travel compared to stock, a must-have when paired with the shocks or other aftermarket shocks like King, Fox, Icon, and more.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSilentSpin™ bushings — no squeaks or maintenance\u003c\/li\u003e\n\u003cli\u003ePro 4 ball joints with sealed dust caps\u003c\/li\u003e\n\u003cli\u003eRebuildable, USA-made construction\u003c\/li\u003e\n\u003cli\u003ePrecision-welded 4130 chromoly tubing\u003c\/li\u003e\n\u003cli\u003eShipped preassembled for faster installs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eUpgrade Your GM 2500 With Confidence\u003c\/strong\u003e\u003cbr\u003eBuilt and tested in the USA, these 4130 UCAs are engineered for the long haul—perfect for rigs that work hard on weekdays and explore even harder on weekends. It's the last set of upper control arms you'll ever need.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eAmount of Lift: Allows for 0–3\" of lift\u003c\/li\u003e\n\u003cli\u003eTrack Width: Stock\u003c\/li\u003e\n\u003cli\u003eMaximum Backspacing: 5.75\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003ch2\u003eWhat's included\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e4130 Chromoly upper control arms\u003c\/li\u003e\n\u003cli\u003eProbearing SilentSpin Hybrid bushings\u003c\/li\u003e\n\u003cli\u003eHeavy-duty Probearing Ball Joints\u003c\/li\u003e\n\u003cli\u003eBall joint caps\u003c\/li\u003e\n\u003cli\u003eDirt King sticker pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro 4 Series Ball Joints\u003c\/strong\u003e – Forged SAE4140 housing, 76° of articulation, and induction-hardened ball stud for maximum strength and smoother steering feel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilentSpin Hybrid Bushings\u003c\/strong\u003e – Maintenance-free, greaseless, and engineered for quiet, free-spinning articulation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeometry Corrected\u003c\/strong\u003e – Improved caster and pivot angles deliver better handling and control with up to 3\" of lift\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4130 Chromoly Construction\u003c\/strong\u003e – Built with high-strength tubing and reinforced gussets for extreme durability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Rebuildable Design\u003c\/strong\u003e – All wear items are replaceable for long-term reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Finishes\u003c\/strong\u003e – Zinc-plated hardware and black powder coat protect against the elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessionally MIG Welded\u003c\/strong\u003e – Ensures structural integrity for demanding off-road use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreassembled\u003c\/strong\u003e – Quick, hassle-free installation with no guesswork\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in the USA\u003c\/strong\u003e – Built with pride and quality you can trust\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ca href=\"https:\/\/dirtking.com\/pages\/dk-638993-instructions\" rel=\"noopener noreferrer\" target=\"_blank\"\u003e\n\u003ch2\u003eInstallation instructions\u003c\/h2\u003e\n\n\u003c\/a\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003e2011–2019 Silverado 2500HD 2WD \/ 4WD\u003cbr\u003e2011–2019 Sierra 2500HD 2WD \/ 4WD\u003cbr\u003e2020–2026 Silverado 2500HD\/3500HD 2WD \/ 4WD\u003cbr\u003e2020–2026 Sierra 2500HD\/3500HD 2WD \/ 4WD\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan\u003e*\u003c\/span\u003eThis product is designed to pair with OEM and Dirt King parts. Compatibility with other brands must be approved by the respective manufacturer.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*\u003c\/span\u003eNot compatible with coilover conversion kits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch2\u003ePart numbers and configurations\u003c\/h2\u003e\u003cdiv class=\"brp-product-specs\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBadge \u0026amp; Cap Color\u003c\/th\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003ctd\u003eDK-638993-GD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003ctd\u003eDK-638993-BK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003eDK-638993-CL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlue\u003c\/td\u003e\n\u003ctd\u003eDK-638993-BL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePurple\u003c\/td\u003e\n\u003ctd\u003eDK-638993-PR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003ctd\u003eDK-638993-RD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003ctd\u003eDK-638993-OR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBronze\u003c\/td\u003e\n\u003ctd\u003eDK-638993-BZ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003eShips directly from the supplier.\u003c\/p\u003e\u003csection data-brp-manufacturer-warranty=\"true\"\u003e\u003cdetails class=\"brp-manufacturer-warranty\"\u003e\u003csummary\u003eManufacturer Warranty\u003c\/summary\u003e\u003cp\u003eApplicable warranty terms depend on the product and manufacturer. See our \u003ca href=\"\/pages\/warranty-policy\"\u003eWarranty Policy\u003c\/a\u003e or contact \u003ca href=\"mailto:sales@bajaracingparts.com\"\u003esales@bajaracingparts.com\u003c\/a\u003e for the applicable written terms.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e","brand":"Dirt King","offers":[{"title":"Gold","offer_id":68049101619443,"sku":"DK-638993-GD","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":68049101652211,"sku":"DK-638993-BK","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Clear","offer_id":68049101684979,"sku":"DK-638993-CL","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":68049101717747,"sku":"DK-638993-BL","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Purple","offer_id":68049101750515,"sku":"DK-638993-PR","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":68049101783283,"sku":"DK-638993-RD","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":68049101816051,"sku":"DK-638993-OR","price":899.0,"currency_code":"USD","in_stock":true},{"title":"Bronze","offer_id":68049101848819,"sku":"DK-638993-BZ","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0695\/6908\/5683\/files\/brp-dk-7436210667563-35282242502699.jpg?v=1793375267","url":"https:\/\/www.bajaracingparts.com\/products\/brp-4130-upper-control-arms-dk-638993","provider":"Baja Racing Parts","version":"1.0","type":"link"}