{"title":"2020-2026 GM 2500HD\/3500HD 6.6L L5P Duramax 8\"+ Lift Kits","description":"\u003cdiv\u003e\n\u003cinput type=\"checkbox\" class=\"read-more-state\" id=\"post-1\"\u003e\n\u003cp class=\"read-more-wrap\"\u003e\u003cspan class=\"read-more-target\"\u003eIf you're someone who demands attention on the road, an 8\"+ lift kit will be the perfect upgrade for your 2020-2026 GM 2500HD\/3500HD 6.6L Duramax build. These extreme lift kits are designed to deliver maximum ground clearance, allowing you to conquer the most rugged terrains with ease. With more than 8\" of lift, your truck will stand out with a bold, towering stance that not only turns heads but gives you more confidence when you come across a demanding trail. Each GM Sierra\/Silverado lift kit is built by trusted manufacturers to ensure long-lasting strength and reliable performance, even when your applications become extreme. To complete your build, consider pairing your new lift with some larger \u003ca href=\"2020-2022-gm-2500hd-3500hd-duramax-66l-l5p-wheels-tires\" title=\"2020-2024 GM 2500HD\/3500HD 6.6L L5P Duramax Wheels \u0026amp; Tires\" rel=\"noopener\" target=\"_blank\"\u003eWheels \u0026amp; Tires\u003c\/a\u003e to push your truck's capability even further. \u003cspan class=\"headerspam\"\u003e\u003cstrong\u003eGM Duramax Fitments:\u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM 6.6L Duramax.\u003c\/span\u003e \u003cspan class=\"headerspam\"\u003e\u003cstrong\u003eSubmodel Fitments:\u003c\/strong\u003e WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.\u003c\/span\u003e \u003cspan class=\"headerspam\"\u003eSome exceptions apply, please see individual product pages for specific fitments.\u003c\/span\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003clabel for=\"post-1\" class=\"read-more-trigger\"\u003e\u003c\/label\u003e\n\u003c\/div\u003e","products":[{"product_id":"cognito-210-p1034-10-performance-lift-kit-with-fox-2-0-reservoir-shocks-20-21-gm-2500-3500hd-trucks","title":"Cognito 210-P1034 10\" inch Performance Lift Kit with Fox PSRR 2.0 Shocks | 2020-2025 GM Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10\" front lift for bold stance\u003c\/li\u003e\n\u003cli\u003e8\" rear lift with Deaver leaf springs\u003c\/li\u003e\n\u003cli\u003eFox 2.0 remote reservoir shocks included\u003c\/li\u003e\n\u003cli\u003eRust resistant aluminum shock bodies\u003c\/li\u003e\n\u003cli\u003eSM Series upper control arms for strength\u003c\/li\u003e\n\u003cli\u003ePatented pitman and idler arm support kit\u003c\/li\u003e\n\u003cli\u003eStainless steel extended brake lines included\u003c\/li\u003e\n\u003cli\u003eMaintains droop travel for smooth ride quality\u003c\/li\u003e\n\u003cli\u003eFits up to 40\" x 13.5\" tires\u003c\/li\u003e\n\u003cli\u003eLevels stance front to rear\u003c\/li\u003e\n\u003cli\u003eCV driveline required for 4WD use above 20mph\u003c\/li\u003e\n\u003cli\u003eEngineered, manufactured, and assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eElevate Your Truck To A Whole New Level\u003c\/h4\u003e\n\u003cp\u003eIf you want your Silverado or Sierra to stand out with a commanding stance and unmatched presence, the Cognito 10-inch Performance Lift Kit with Fox 2.0 Reservoir Shocks has you covered. This kit raises your truck enough to clear massive 40-inch tires, instantly transforming it into a bold statement on the road or trail. The Fox shocks are designed to keep your ride smooth and steady, whether you are cruising down the highway or navigating uneven ground out in the wild. Cognito ensures that performance is just as important as appearance by including high quality components like SM Series control arms, compression struts, and stainless steel brake lines. Together, these upgrades work to keep your truck driving comfortably and confidently no matter the situation. With the added height, you gain more ground clearance for off-road challenges while enjoying a level stance that looks sharp from every angle. Built with pride in the USA, this kit gives your truck the look, performance, and reliability that will keep you excited every time you climb behind the wheel.\u003c\/p\u003e\n\u003ch4\u003eEngineered With Strength And Precision Throughout\u003c\/h4\u003e\n\u003cp\u003eThe Cognito 10-inch Performance Lift Kit is carefully designed to balance big lift with durability and proper handling. At the front, SM Series upper control arms correct ball joint angles and allow more droop travel, which improves suspension movement and overall ride quality. The Fox 2.0 remote reservoir shocks feature aluminum bodies to resist rust and dissipate heat, keeping damping consistent even under heavy use. In the rear, a Deaver leaf pack replaces the factory springs with a multi-leaf design that maintains load capacity while delivering a smoother, more compliant ride. To reinforce the steering system, Cognito includes their patented pitman and idler arm support kit, which eliminates center-link movement and helps address a common weak point on GM trucks. Heavy-duty compression struts and a 4-inch block and U-bolt kit complete the rear lift, ensuring both strength and stability at the new ride height. With corrected CV angles and stainless steel extended brake lines, this system is built for both daily driving and serious off-road performance. Every piece is engineered, manufactured, and assembled in the USA, making this kit a dependable choice for truck owners who want performance to match the lift.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fitment: \u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides 10\" of front lift and 8\" of rear lift\u003c\/li\u003e\n\u003cli\u003eCompatible with up to 40x13.5 tires on 10\" wide wheels\u003c\/li\u003e\n\u003cli\u003eRecommended wheel backspacing: 4.5 inches\u003c\/li\u003e\n\u003cli\u003eCV driveline required if operating in 4WD above 20mph\u003c\/li\u003e\n\u003cli\u003eIncludes Deaver leaf pack for improved rear ride quality\u003c\/li\u003e\n\u003cli\u003ePatented Pitman and Idler Arm Support Kit addresses common GM steering wear\u003c\/li\u003e\n\u003cli\u003eMaintains droop travel for proper suspension performance\u003c\/li\u003e\n\u003cli\u003eEstimated 18-hour DIY installation time\u003c\/li\u003e\n\u003cli\u003eAll components engineered, manufactured, and assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cognito","offers":[{"title":"Default Title","offer_id":49526988243228,"sku":"COG210-P1034","price":8609.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/210-P1034_0.jpg?v=1722352622"},{"product_id":"cognito-210-p1035-12-performance-lift-kit-with-fox-2-0-reservoir-shocks-20-21-gm-2500-3500hd-trucks","title":"Cognito 210-P1035 12\" inch Performance Lift Kit with Fox 2.0 PSRR Shocks | 2020-2025 GM Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e12\" front lift for maximum clearance\u003c\/li\u003e\n\u003cli\u003e9\" rear lift with Deaver leaf springs\u003c\/li\u003e\n\u003cli\u003eFox 2.0 remote reservoir shocks included\u003c\/li\u003e\n\u003cli\u003eImproved cooling capacity with aluminum shock bodies\u003c\/li\u003e\n\u003cli\u003eSM Series upper control arms for strength\u003c\/li\u003e\n\u003cli\u003ePatented pitman and idler arm support kit\u003c\/li\u003e\n\u003cli\u003eForged torsion bar keys for added durability\u003c\/li\u003e\n\u003cli\u003eStainless steel braided brake lines included\u003c\/li\u003e\n\u003cli\u003eMaintains droop travel for smooth ride quality\u003c\/li\u003e\n\u003cli\u003eFits up to 40\" x 13.5\" tires\u003c\/li\u003e\n\u003cli\u003eLevels stance front to rear\u003c\/li\u003e\n\u003cli\u003eMade in the USA with premium components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTake On The Road With An Unstoppable Stance\u003c\/h4\u003e\n\u003cp\u003eIf you are looking to completely transform the look and capability of your Silverado or Sierra, this Cognito 12-inch Performance Lift Kit with Fox 2.0 Reservoir Shocks delivers everything you need. With a towering stance and clearance for massive 40-inch tires, your truck will stand out anywhere, whether parked in town or crawling over rocky trails. The Fox remote reservoir shocks give you confidence with every mile by keeping your ride stable and controlled, even on long highway runs or unpredictable off-road terrain. Cognito designed this system to not only provide aggressive lift but also to improve steering stability and ride comfort, so you can enjoy the upgrade every day. The inclusion of heavy-duty control arms and compression struts means strength and performance are built in from the start. What’s more, every piece is engineered and assembled in the USA, so you know you are getting top-level quality. This is the kind of lift kit that makes your truck look unstoppable while keeping it reliable where it matters most.\u003c\/p\u003e\n\u003ch4\u003eBuilt For Strength With Proven Suspension Engineering\u003c\/h4\u003e\n\u003cp\u003eThe Cognito 12-inch Performance Lift Kit is a complete system built with attention to detail and long-term durability. At the heart of the kit are SM Series upper control arms that correct ball joint angles while improving suspension travel for a smoother ride. Fox 2.0 remote reservoir shocks are included, offering a metal impact-extruded aluminum body that increases cooling capacity while preventing oil aeration, ensuring consistent damping performance. In the rear, a Deaver leaf pack replaces the factory springs with high quality steel and a thinner multi-leaf design, delivering a compliant ride without sacrificing load capacity. To strengthen the steering system, the patented pitman and idler arm support kit eliminates unwanted center-link movement, addressing a common wear point on GM trucks. Forged torsion bar keys, stainless steel braided brake lines, and compression struts round out the front suspension for a complete, reinforced setup. With corrected CV joint angles and maintained droop travel, this lift balances big height with safe, predictable handling. It is designed to handle serious off-road use while keeping your truck stable and dependable on the pavement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fitment: \u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProvides 12\" of front lift and 9\" of rear lift\u003c\/li\u003e\n\u003cli\u003eCV driveline required if operating 4WD above 20mph\u003c\/li\u003e\n\u003cli\u003eCompatible with up to 40x13.5 tires on 10\" wide wheels\u003c\/li\u003e\n\u003cli\u003eRecommended wheel backspacing: 4.5 inches\u003c\/li\u003e\n\u003cli\u003eIncludes Deaver leaf pack for improved rear ride quality\u003c\/li\u003e\n\u003cli\u003ePatented Pitman and Idler Arm Support Kit addresses common GM steering wear\u003c\/li\u003e\n\u003cli\u003eEstimated 18-hour DIY installation time\u003c\/li\u003e\n\u003cli\u003eForged torsion bar keys included for added strength\u003c\/li\u003e\n\u003cli\u003eAll components engineered, manufactured, and assembled in the USA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cognito","offers":[{"title":"Default Title","offer_id":49526988341532,"sku":"COG210-P1035","price":8760.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/210-P1035_0.jpg?v=1722352621"},{"product_id":"cognito-210-p1178-12-elite-lift-kit-w-elka-25-reservoir-shocks-for-2020-2024-gm-sierrasilverado-25003500","title":"Cognito 210-P1178 12\" inch Elite Lift Kit with Elka 2.5 Reservoir Shocks | 2020-2025 GM Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGain impressive 12\" of front lift\u003c\/li\u003e\n\u003cli\u003eAdds 9\" of rear lift from Deaver leaf pack and block and U-bolt Kit\u003c\/li\u003e\n\u003cli\u003eLevels vehicle front to rear\u003c\/li\u003e\n\u003cli\u003eSuperior ride quality\u003c\/li\u003e\n\u003cli\u003eAllows room for 40\" tires\u003c\/li\u003e\n\u003cli\u003eElka 2.5 remote reservoir shocks\u003c\/li\u003e\n\u003cli\u003ePatented Pitman Idler Arm Support Kit\u003c\/li\u003e\n\u003cli\u003eSM Series Ball Joint Upper Control Arms\u003c\/li\u003e\n\u003cli\u003eSM Series Compression Struts\u003c\/li\u003e\n\u003cli\u003eHeavy-duty front sway bar\u003c\/li\u003e\n\u003cli\u003eForged torsion bar keys\u003c\/li\u003e\n\u003cli\u003eExtended stainless steel brake lines\u003c\/li\u003e\n\u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003cli\u003eMade in USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCommand Presence On and Off-road with Comfort and Capability\u003c\/h4\u003e\n\u003cp\u003eYour 2020-2025 GM Sierra\/Silverado deserves much more than the stock height suspension. A 12\" lift completely transforms the appearance of your truck, taking it from stock pickup truck to king of the road. But why should you compromise comfort and capability to get the aggressive stance you want? Cognito doesn't think you should; that's why the Cognito 12\" Elite Lift Kit with Elka 2.5 Reservoir Shocks delivers comfort, capability, and an undeniable stance. The Elka 2.5 Reservoir Shocks are tuned specifically for your truck to deliver ride quality that exceeds expectations. Additionally, the Elka shocks deliver increased towing handling as it reduces rear-end bucking and lifting. The Deaver rear leaf springs also add to a more compliant and plusher on and off-road ride, as it features a higher count of thinner leaf material. The kit also includes Upper Control arms that have a corrected ball joint angle with added caster, which translates to better ride quality and a truck that tracks straight down the highway.\u003c\/p\u003e\n\u003ch4\u003ePatented Design with Heavy-Duty Materials\u003c\/h4\u003e\n\u003cp\u003eStandard off the shelf parts just didn't sit well for Cognito when they designed their 12\" Elite Lift Kit. They decided to go the extra mile by including their own patented technology with the Pitman Idler Arm Support kit. This included kit solves a common issue that effects almost all GM trucks and SUVs, where the pitman and idler arm suffer premature wear which leads to lane wandering, driver fatigue and excess tire wear. Cognito's reinforcement kit fixes these issues and improves the driving experience across the board. Cognito's kit also includes Upper Control arms that come complete with heavy duty ball joints that are maintenance free. The Cognito 12\" Elite Lift Kit for your GM Sierra\/Silverado has everything you need to become the king of the road both on road and off-road.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFits: \u003c\/strong\u003e2020, 2021, 2022, 2023, 2024, 2025 GM Sierra\/Silverado 2500HD\/3500HD\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplication Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCV Front Driveline is required on 4WD models if operating in 4WD above 20mph\u003c\/li\u003e\n\u003cli\u003eAllows for up to a 40 x 13.5-Inch Tire on a 10-Inch Wide Wheel with 4.5-Inch Backspacing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cognitomotorsports.com\/mwdownloads\/download\/link\/id\/1021\" target=\"_blank\"\u003e Installation Instructions: Start Here\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cognitomotorsports.com\/mwdownloads\/download\/link\/id\/1036\" target=\"_blank\"\u003e Installation Instructions: Front Suspension\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cognitomotorsports.com\/mwdownloads\/download\/link\/id\/741\" target=\"_blank\"\u003e Installation Instructions: Pitman and Idler Arm Support Kit\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cognitomotorsports.com\/mwdownloads\/download\/link\/id\/922\" target=\"_blank\"\u003e Installation Instructions: Upper Control Arm Kit\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cognitomotorsports.com\/mwdownloads\/download\/link\/id\/763\" target=\"_blank\"\u003e Installation Instructions: Rear Lift Block and U-Bolt Kit\u003c\/a\u003e \u003c\/strong\u003e\u003c\/p\u003e","brand":"Cognito","offers":[{"title":"Default Title","offer_id":49527502504220,"sku":"COG210-P1178","price":10705.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/20cog210-p1178_01.jpg?v=1722352639"},{"product_id":"readylift-42-30840-8-inch-max3-3-suspension-system-with-falcon-3-3-shocks-and-fab-uca-arms-20-24-gm-6-6l-duramax","title":"ReadyLift 42-30840 8-inch MAX3.3 Suspension System with Falcon 3.3 Shocks And Fab UCA Arms | 2020-2025 GM Silverado\/Sierra 2500HD\/3500HD 6.6L Duramax L5P","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFalcon 3.3 Fast Adjust Shocks offer 3-position compression settings\u003c\/li\u003e\n\u003cli\u003eIncreases nitrogen-to-oil ratio for consistent damping\u003c\/li\u003e\n\u003cli\u003eDelivers consistent performance across temperatures from -50 °F to 450 °F\u003c\/li\u003e\n\u003cli\u003eClears up to 37x12.50 tires on 20×9†wheels with a 0 offset\u003c\/li\u003e\n\u003cli\u003eMaintains superior handling and a factory-like ride feel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e8 Inches of Bold Power for Your GM Truck\u003c\/h4\u003e\n\u003cp\u003eTransform your 2020-2025 Chevy Silverado or GMC Sierra 2500HD\/3500HD with the ReadyLift 8-Inch MAX3.3 Suspension System. Designed for those who demand the ultimate combination of performance, style, and capability, this kit gives your truck an aggressive, towering stance while maintaining superior ride quality. With 3.3 Falcon Fast Adjust Shocks at all four corners, you can fine-tune your suspension for any terrain ”from city streets to rugged trails. This premium system not only clears up to 37-inch tires but also elevates your truck's handling, comfort, and versatility. Whether you're tackling off-road adventures, towing heavy loads, or simply cruising in style, this lift kit is your ticket to a better-than-factory driving experience.\u003c\/p\u003e\n\u003ch4\u003eEngineered Excellence for Heavy-Duty Demands\u003c\/h4\u003e\n\u003cp\u003eThe ReadyLift 8-Inch MAX3.3 Suspension System is meticulously crafted for durability and precision. The kit includes laser-cut, heavy-duty steel cross-members, new cast iron OE-style knuckles, forged torsion keys, and taller cast rear lift blocks for a solid, reliable lift. Paired with Falcon 3.3 adjustable dampers, this system offers customizable compression settings, ensuring optimal performance in any condition. Advanced features like chromoly steel upper control arms with corrected ball joint angles and torsion bar relocation brackets improve ground clearance and suspension geometry for a smoother, more controlled ride. This comprehensive lift system is engineered to withstand the toughest conditions while delivering unmatched capability and comfort.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025 GM 6.6L Duramax\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle Cab configuration has not been validated for fitment \u0026amp; drivability by ReadyLift.\u003c\/li\u003e\n\u003cli\u003eSome GM HD trucks equipped with the Tow Package may require custom-length U-bolts purchased separately.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ReadyLift Suspension","offers":[{"title":"Default Title","offer_id":50871187538204,"sku":"RLS42-30840","price":4729.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/RLS42-30840_1.jpg?v=1734456513"},{"product_id":"readylift-44-30821-8-lift-kit-w-falcon-2-1-shocks-2020-2025-gm-silverado-sierra-2500hd-3500hd-4wd-at4","title":"ReadyLift 44-30821  8'' Lift Kit W\/ Falcon 2.1 Shocks | 2020-2025 GM Silverado\/Sierra 2500HD\/3500HD 4WD\/AT4","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2020–2025 GM 2500HD\/3500HD 4WD and AT4\u003c\/li\u003e\n\u003cli\u003eProvides a full 8 inches of lift\u003c\/li\u003e\n\u003cli\u003eIncludes four Falcon 2.1 monotube shocks\u003c\/li\u003e\n\u003cli\u003eAllows fitment of up to 38 inch tires\u003c\/li\u003e\n\u003cli\u003eIncludes heavy-duty laser-cut steel crossmembers\u003c\/li\u003e\n\u003cli\u003eFeatures OE-style cast iron steering knuckles\u003c\/li\u003e\n\u003cli\u003eForged torsion keys with proper indexing included\u003c\/li\u003e\n\u003cli\u003eTorsion bar brackets maintain factory bar position\u003c\/li\u003e\n\u003cli\u003eIncludes differential drop brackets and CV spacers\u003c\/li\u003e\n\u003cli\u003eComes with heavy-duty steel skid plate\u003c\/li\u003e\n\u003cli\u003eImproves ground clearance and front-end geometry\u003c\/li\u003e\n\u003cli\u003eMade in the USA with premium materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTake Your HD Build To The Next Level\u003c\/h4\u003e\n\u003cp\u003eIf you're ready to go big with your 2020–2025 Silverado or Sierra HD, the ReadyLift 8'' Lift Kit with Falcon 2.1 shocks is built to make it happen. This isn't just for looks, this full suspension system gives your truck the stance, clearance, and ride quality to back up its aggressive new profile. With room for up to 38-inch tires, you'll gain serious off-road capability and a head-turning presence on the street. The Falcon 2.1 monotube shocks deliver confident handling and control, even when the pavement ends. Whether you're building a show-worthy rig or outfitting a workhorse that handles rugged terrain, this kit provides the strength and ride comfort you're after. Every component, from the forged torsion keys to the heavy-duty crossmembers, is built to last and handle serious use. If you're looking for a lift kit that delivers real-world performance and style, this one is ready to go the distance.\u003c\/p\u003e\n\u003ch4\u003eEngineered For Strength Ride Quality And Proper Geometry\u003c\/h4\u003e\n\u003cp\u003eThe ReadyLift 44-30821 8'' Lift Kit is a complete front and rear suspension solution designed for 2020–2025 GM 2500HD and 3500HD 4WD trucks, including AT4 models. It features laser-cut, CNC-formed crossmembers, OE-style cast iron knuckles, and forged torsion keys to deliver the right lift height while preserving alignment geometry and drivability. Included torsion bar relocation brackets keep the bars in their factory location, improving ground clearance and reducing stress on suspension components. The Falcon 2.1 monotube shocks are tuned to manage the increased height and mass, helping maintain control and ride comfort on and off the road. Differential drop brackets and CNC-machined CV axle spacers are included to protect driveline angles, while extended sway bar end links and bump stop extensions help keep the suspension operating within proper limits. The kit also includes a heavy-duty skid plate and OE-style rear lift blocks with integrated bump stop pads. This system is built to handle the weight, power, and real-world demands of GM’s HD trucks without cutting corners on ride or reliability\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e Fitment: \u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025 GM Silverado\/Sierra 2500HD\/3500HD 4WD\/AT4\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2020–2025 Silverado and Sierra 2500HD\/3500HD 4WD and AT4 models\u003c\/li\u003e\n\u003cli\u003eNot compatible with AT4X or ZR2 trim levels\u003c\/li\u003e\n\u003cli\u003eSingle cab fitment has not been validated by ReadyLift\u003c\/li\u003e\n\u003cli\u003eSupports up to 38\" tall tires for aggressive stance\u003c\/li\u003e\n\u003cli\u003eSome vehicles with tow packages may require custom U-bolts\u003c\/li\u003e\n\u003cli\u003eIncludes Falcon 2.1 monotube shocks for improved ride control\u003c\/li\u003e\n\u003cli\u003eRequires headlamp and ADAS recalibration after installation\u003c\/li\u003e\n\u003cli\u003eAlignment is necessary after installation to ensure proper handling\u003c\/li\u003e\n\u003cli\u003eHeavy-duty components designed for strength and long-term durability\u003c\/li\u003e\n\u003cli\u003eModifications may be required for full installation\u003c\/li\u003e\n\u003cli\u003eSkid plate, sway bar links, and CV spacers included in the kit\u003c\/li\u003e\n\u003cli\u003eMade in the USA and backed by ReadyLift quality standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"file:\/\/\/C:\/Users\/edgar.ramirez\/Downloads\/44-30821.pdf\" target=\"_blank\"\u003e\u003cstrong\u003eInstall Instructions\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"ReadyLift Suspension","offers":[{"title":"Default Title","offer_id":53818409287964,"sku":"RLS44-30821","price":3699.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/44-30821_1.jpg?v=1769707387"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/collections\/GM_Duramax_8inch_Lift_Kits_Thumb_1.jpg?v=1728504711","url":"https:\/\/www.alligatorperformance.com\/collections\/2020-2026-gm-duramax-66l-l5p-8-lift-kits.oembed","provider":"Alligator Performance","version":"1.0","type":"link"}