{"title":"2020-2026 GM 2500HD\/3500HD 6.6L L5P Duramax 7-8\" Rear Shocks","description":"\u003cdiv\u003e\n\u003cinput type=\"checkbox\" class=\"read-more-state\" id=\"post-1\"\u003e\n\u003cp class=\"read-more-wrap\"\u003eOne of the best things you can do for your lifted\/leveled 2020-2026 GM Sierra\/Silverado 2500\/3500 is adding on a new set of performance rear shocks. Our selection of aftermarket 7-8\" rear shocks were specifically designed to improve your truck's handling and stability during heavy-duty towing and off-road applications, giving you more confidence when you're behind the wheel. These shocks are designed to drop directly in place of your factory components to provide a quick and easy upgrade that anyone can benefit from. The 7-8\" lift range will help accommodate for your truck's massive ride height so you can have more confidence on every overland adventure. Pair your new rear shocks with some matching \u003ca href=\"2020-2022-gm-duramax-66l-l5p-7-8-front-shocks\" title='2020-2024 GM 2500HD\/3500HD 6.6L L5P Duramax 7-8\" Lift Front Shocks' rel=\"noopener\" target=\"_blank\"\u003e7-8\" Front Shocks\u003c\/a\u003e and gain even more control on all four corners!\u003cspan class=\"read-more-target\"\u003e \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":"77727p-01-23-2500hd-icon-6-8-rear-25-vs-pb-shock-pair","title":"ICON 77727P 2.5\" VS Piggyback Res Rear Shocks - for 6-8\" Lift - (Pair) | 2001-2026 GM Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupports 6-8\" rear lift\u003c\/li\u003e\n\u003cli\u003eFits 2001-2026 GM Silverado\/Sierra 2500HD\/3500HD\u003c\/li\u003e\n\u003cli\u003eNitrogen Charged Monotube\u003c\/li\u003e\n\u003cli\u003ePremium Grade 5WT Shock Oil\u003c\/li\u003e\n\u003cli\u003e7\/8\" Diameter Induction Hardened Shock Shaft\u003c\/li\u003e\n\u003cli\u003e100% Revalveable and Rebuildable\u003c\/li\u003e\n\u003cli\u003eCorrosion Resistant\u003c\/li\u003e\n\u003cli\u003eIncreases Damping With Bump Zone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eBuilt For The Harsh Off-Road\u003c\/h4\u003e\n\u003cp\u003eICON Vehicle Specific (V.S.) 2.5\" Aluminum Series shocks are designed and built to give your vehicle outstanding performance off-road and a smooth ride on the street. These shocks are configured specifically for each application in both length and damping tune. Like all ICON'S Shock Absorbers, V.S. 2.5\" Aluminum Series shocks are 100% rebuildable and 100% revalveable. For piggyback and specific remote reservoir applications, ICON'S unique use of a 6061 billet aluminum manifold a few inches below the top cap of the shock creates an internal Bump Zone that when used creates an additional 20% of damping force. This additional force helps prevent harsh bottom outs and controls the suspension when compressing at high velocity. If you are looking for a more user defined tune, consider looking into the Compression Damping Control Valve (CDCV) shocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment: \u003c\/strong\u003e2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM Silverado\/Sierra 2500HD\/3500HD w\/ 6-8\" Rear Lift\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2001-2026 Silverado\/Sierra 2500HD\/3500HD w\/ 6-8\" Rear Lift\u003c\/li\u003e\n\u003cli\u003eDesigned for vehicle-specific length and damping tune\u003c\/li\u003e\n\u003cli\u003eIntended for heavy off-road use and daily driving\u003c\/li\u003e\n\u003cli\u003eRequires correct lift height selection before purchase\u003c\/li\u003e\n\u003cli\u003eSold individually, check quantity needed for your setup\u003c\/li\u003e\n\u003cli\u003e100% rebuildable and revalveable for long service life\u003c\/li\u003e\n\u003cli\u003eOptional CDCV upgrade available for user-adjustable tuning\u003c\/li\u003e\n\u003cli\u003eInternal Bump Zone adds 20% more damping at full compression\u003c\/li\u003e\n\u003cli\u003eUses premium grade shock oil for consistent performance\u003c\/li\u003e\n\u003cli\u003e7\/8\" induction-hardened shaft resists bending and wear\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant aluminum construction for durability\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended for best results\u003c\/li\u003e\n\u003cli\u003e(2) ICON 2.5\" VS Piggyback Res Rear Shocks\u003c\/li\u003e\n\u003cli\u003eProduct images may be representative\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Icon Vehicle Dynamics","offers":[{"title":"Default Title","offer_id":49527335354652,"sku":"IVD77727P","price":1193.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/7286b55d3ed798d93f6689037db492dc_619ca046-93ed-46b4-b0e9-d5746265613c_1.webp?v=1787784142"},{"product_id":"77727cp-01-16-2500hd-icon-6-8-rear-25-vs-pb-cdcv-shock-pair","title":"ICON 77727CP 2.5\" VS Piggyback CDCV Rear Shocks - for 6-8\" Lift - (Pair) | 2001-2026 GM Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupports 6-8\" rear lift\u003c\/li\u003e\n\u003cli\u003eFits 2001-2026 GM Silverado\/Sierra 2500HD\/3500HD\u003c\/li\u003e\n\u003cli\u003eNitrogen Charged Monotube\u003c\/li\u003e\n\u003cli\u003ePremium Grade 5WT Shock Oil\u003c\/li\u003e\n\u003cli\u003e7\/8\" Diameter Induction Hardened Shock Shaft\u003c\/li\u003e\n\u003cli\u003e100% Revalveable and Rebuildable\u003c\/li\u003e\n\u003cli\u003eCorrosion Resistant\u003c\/li\u003e\n\u003cli\u003eIncreases Damping With Bump Zone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eBuilt For The Harsh Off-Road\u003c\/h4\u003e\n\u003cp\u003eICON Vehicle Specific (V.S.) 2.5\" Aluminum Series shocks are designed and built to give your vehicle outstanding performance off-road and a smooth ride on the street. These shocks are configured specifically for each application in both length and damping tune. Like all ICON'S Shock Absorbers, V.S. 2.5\" Aluminum Series shocks are 100% rebuildable and 100% revalveable. For piggyback and specific remote reservoir applications, ICON'S unique use of a 6061 billet aluminum manifold a few inches below the top cap of the shock creates an internal Bump Zone that when used creates an additional 20% of damping force. This additional force helps prevent harsh bottom outs and controls the suspension when compressing at high velocity. If you are looking for a more user defined tune, consider looking into the Compression Damping Control Valve (CDCV) shocks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment: \u003c\/strong\u003e2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, \u003cspan lang=\"EN-US\" class=\"TextRun SCXW47934426 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW47934426 BCX0\"\u003e2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025\u003c\/span\u003e\u003cspan class=\"NormalTextRun SCXW47934426 BCX0\"\u003e, 2026\u003c\/span\u003e\u003c\/span\u003e GM Silverado\/Sierra 2500HD\/3500HD w\/ 6-8\" Rear Lift \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits 2001-2026 GM 2500\/3500 HD trucks.\u003c\/li\u003e\n\u003cli\u003eDesigned for 6 to 8 inch lifts.\u003c\/li\u003e\n\u003cli\u003eInstalls on the rear suspension.\u003c\/li\u003e\n\u003cli\u003eSold as a pair.\u003c\/li\u003e\n\u003cli\u003eCDC adjustment is manual at each shock.\u003c\/li\u003e\n\u003cli\u003eTen compression damping settings are available.\u003c\/li\u003e\n\u003cli\u003eExtended length is 31.56 inches.\u003c\/li\u003e\n\u003cli\u003eCompressed length is 18.63 inches.\u003c\/li\u003e\n\u003cli\u003eShock travel measures 12.93 inches.\u003c\/li\u003e\n\u003cli\u003eApplication specific mounting hardware is included.\u003c\/li\u003e\n\u003cli\u003eShocks are fully rebuildable and revalveable.\u003c\/li\u003e\n\u003cli\u003e(2) ICON 2.5\" VS Piggyback CDCV Rear Shocks.\u003c\/li\u003e\n\u003cli\u003eProduct images may be representative.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Icon Vehicle Dynamics","offers":[{"title":"Default Title","offer_id":49527335518492,"sku":"IVD77727CP","price":1482.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/00d224dff97816dadc18917e6b8b02df_1.webp?v=1787785240"},{"product_id":"fox-987-24-025","title":"FOX 987-24-025 2.5 Performance IFP HTO Rear Shock - for 6.5\" Lift - (Single) | 2020-2026 GM Sierra\/Silverado 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupports 6.5\" rear lift \u003c\/li\u003e\n\u003cli\u003eFits 2020-2026 GM Sierra\/Silverado 2500HD\/3500HD\u003c\/li\u003e\n\u003cli\u003e2.5\" impact-extruded aluminum shock body\u003c\/li\u003e\n\u003cli\u003eType II clear-anodized corrosion protection\u003c\/li\u003e\n\u003cli\u003eInternal Floating Piston design boosts control\u003c\/li\u003e\n\u003cli\u003eHydraulic Top Out improves rebound comfort\u003c\/li\u003e\n\u003cli\u003eGreat for trucks with heavier tires\u003c\/li\u003e\n\u003cli\u003eHigh-flow velocity-sensitive damping response\u003c\/li\u003e\n\u003cli\u003e5\/8\" hard chrome-plated shaft\u003c\/li\u003e\n\u003cli\u003ePosition-sensitive rebound for better handling\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation for lifted trucks\u003c\/li\u003e\n\u003cli\u003eReduces harsh top-out impacts on road\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for GM HD trucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDrive Harder With Comfort You Can Feel\u003c\/h4\u003e\n\u003cp\u003eIf you’ve lifted your 2020-2026 Silverado or Sierra 2500HD\/3500HD and added more aggressive tires, the FOX 987-24-025 rear shock is exactly what your truck needs to handle the extra demand. This shock is all about combining strength with ride comfort, giving you the confidence to push harder both on and off the road. Thanks to FOX’s Hydraulic Top Out technology, you won’t get that harsh jolt at full rebound like you do with lesser shocks. Instead, it slows the return of the shock shaft just enough to keep things controlled and smooth, especially when hitting dips, ruts, or even speed bumps. It’s also a great match for trucks that haul gear or trailers, keeping the rear end stable without bouncing around. The bolt-on design means no headaches during installation, and once they’re in, you’ll notice the difference right away. Whether you're chasing trails or hauling heavy loads, these rear shocks deliver serious comfort, control, and capability every mile of the way.\u003c\/p\u003e\n\u003ch4\u003ePurpose Built To Handle Lifted Demands\u003c\/h4\u003e\n\u003cp\u003eFOX designed the 987-24-025 Performance Series IFP HTO rear shock to meet the unique challenges of 6.5-inch lifted GM HD trucks. The 2.5-inch impact-extruded 6061-T6 aluminum body is lightweight, strong, and coated in a Type II clear anodized finish that holds up against corrosion in all seasons. Inside, the high-flow, velocity-sensitive damping system adapts to road and terrain conditions in real time, offering a ride that’s both responsive and predictable. The Internal Floating Piston (IFP) keeps oil and nitrogen separated for consistent damping without cavitation, even during hard use. The 5\/8-inch hard chrome shaft provides long-term durability, and the position-sensitive Hydraulic Top Out piston helps reduce rebound harshness without sacrificing control. This becomes especially important with oversized tires or when carrying extra weight in the bed. Built for serious use and fine-tuned for comfort, this shock isn’t just compatible with lifted setups, it’s made to perform with them.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment: \u003c\/strong\u003e 2020, 2021, 2022, 2023, 2024, 2025, 2026 GM Sierra\/Silverado 2500HD\/3500HD w\/ 6.5\" Rear Lift\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNotes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 2020-2026 Silverado and Sierra 2500HD\/3500HD\u003c\/li\u003e\n\u003cli\u003eEngineered for vehicles with a 6.5\" rear lift\u003c\/li\u003e\n\u003cli\u003eOptimized for use with aggressive oversized tires\u003c\/li\u003e\n\u003cli\u003eHydraulic Top Out reduces harsh rebound impacts\u003c\/li\u003e\n\u003cli\u003eGreat for lifted trucks carrying extra weight or gear\u003c\/li\u003e\n\u003cli\u003eDirect bolt-on installation with no major modifications required\u003c\/li\u003e\n\u003cli\u003eBest paired with matching front shocks for balanced handling\u003c\/li\u003e\n\u003cli\u003eNot compatible with stock height or lower lift setups\u003c\/li\u003e\n\u003cli\u003eAluminum body resists corrosion in all driving environments\u003c\/li\u003e\n\u003cli\u003eDesigned to improve both off-road and highway ride quality\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended for proper suspension tuning\u003c\/li\u003e\n\u003cli\u003e(1) FOX 2.5 Performance IFP HTO Rear Shock\u003c\/li\u003e\n\u003cli\u003eProduct images may be representative\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/serenity-foxfactory.asset.akeneo.cloud\/fox_asset_family\/media\/605_01_053_REV_C.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eInstall Instructions\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Fox Shocks","offers":[{"title":"Default Title","offer_id":52168555069724,"sku":"FOX987-24-025","price":346.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/files\/987_24_009_P04_b89983de-af82-4b4b-a780-68d8d63f6659.webp?v=1751391263"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/2279\/8108\/collections\/GM_Duramax_7-8_Rear_Shocks_Thumb_2.jpg?v=1728507162","url":"https:\/\/www.alligatorperformance.com\/collections\/2020-2026-gm-duramax-66l-l5p-7-8-rear-shocks.oembed","provider":"Alligator Performance","version":"1.0","type":"link"}