{"product_id":"cognito-12-inch-elite-lift-kit-elka-2-5-reservoir-shocks-silverado-sierra-2500hd-3500hd-2020-210-p1178","title":"Cognito 12\" Elite Lift Kit with Elka 2.5 Reservoir Shocks | 2020-2025 Silverado\/Sierra 2500HD\/3500HD","description":"\u003ch2\u003eThe Obsidian Vision\u003c\/h2\u003e\u003cp\u003eTwelve inches of front lift and nine inches of rear lift on a 2020–2025 Silverado or Sierra 2500HD\/3500HD is the outer boundary of what a properly engineered T1 GMT1XX heavy-duty platform can achieve — a complete suspension system transformation that begins with a non-negotiable requirement: the stock front driveline is not supported with this kit on 4WD trucks, and a CV front driveline upgrade must be in place before the vehicle is operated in 4WD under any conditions. With that foundation established, the Cognito 12-Inch Elite Lift Kit with Elka 2.5 Reservoir Shocks delivers the rest of the transformation as a complete, no-guesswork system: SM Series Ball Joint Upper Control Arms, SM Series Compression Struts, the patented Pitman and Idler Arm Support Kit, Elka 2.5 Reservoir front shocks, forged torsion bar keys, Deaver replacement leaf packs, a 5-inch block and U-bolt kit, and stainless steel braided brake lines — every component engineered, manufactured, and assembled in the USA, and sized to clear a 40x13.5-inch tire on a 10-inch wide wheel. At $10,599.88, this is the T1 heavy-duty build that leaves nothing on the table.\u003c\/p\u003e\u003ch3\u003eConcierge Fitment Guarantee\u003c\/h3\u003e\u003cp\u003eEvery order is manually reviewed by our technicians to ensure 100% compatibility with your build before we ship.\u003c\/p\u003e\u003ch3\u003eEngineering Breakdown\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifts\u003c\/strong\u003e the front of the 2020–2025 Silverado\/Sierra 2500HD\/3500HD 12 inches via the Cognito SM Series Ball Joint Upper Control Arm Kit, SM Series Compression Struts, and forged torsion bar keys working in concert to correct ball joint and CV joint angles at extreme lift height — maintaining adequate front droop travel, corrected CV joint geometry, and long-term front suspension component integrity across the full 12-inch lift range on the T1 platform's front suspension architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEliminates\u003c\/strong\u003e the pitman and idler arm center-link movement that causes steering play, road wander, and accelerated steering component wear at extreme lift heights through the patented Cognito Pitman and Idler Arm Support Kit — the engineering solution to the inherent wear problem that has plagued GM truck steering systems for decades and is amplified at 12 inches of front lift on the T1 platform.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevels\u003c\/strong\u003e the truck front to rear with 9 inches of rear lift via Deaver replacement leaf packs (4 inches over stock) combined with the Cognito 5-inch block and U-bolt kit, with the Elka 2.5 Reservoir shocks delivering precise high- and low-speed compression damping tuned for the specific weight, geometry, and terrain demands of a 12-inch lifted T1 heavy-duty build capable of running a 40x13.5-inch tire.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Cognito SM Series Ball Joint Upper Control Arms feature boxed sheet-metal construction, welded seams, and semi-gloss black powder coat, with pre-installed maintenance-free ball joints and pivot bushings. The SM Series Compression Struts are required at 12 inches of front lift to maintain correct CV joint operating angles that the upper control arm alone cannot fully address at this lift height on the T1 platform. The forged torsion bar keys are the front ride height adjustment component specific to the T1 2500HD\/3500HD torsion bar front suspension, providing the mechanical advantage required to achieve 12 inches of front lift without over-cranking factory adjuster keys beyond their designed range. The Elka 2.5 Reservoir shocks feature an external reservoir with increased oil volume for cooler operating temperatures, and precise high- and low-speed compression damping adjustment that allows the owner to tune the damping character to their specific load, terrain, and driving style without compromise. The Deaver leaf pack is a complete OEM spring replacement arched for 4 inches over stock rear lift height, manufactured from high-quality spring steel with a higher leaf count and thinner leaf material for a more compliant progressive rate. The Cognito 5-inch block and U-bolt kit adds the remaining 5 inches of rear lift, with powder-coated semi-gloss black steel blocks and heavy-duty zinc plated U-bolts completing the 9-inch total rear lift system. Stainless steel braided brake lines are included to safely accommodate the increased suspension travel at 12 inches of front lift. All Cognito components are engineered, manufactured, and assembled in the USA. At 708 lbs, this kit ships via LTL freight carrier on multiple pallets with residential delivery included.\u003c\/p\u003e\u003ch3\u003eAudit Table\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eMaterials\u003c\/th\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003cth\u003eIncluded Components\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e210-P1178\u003c\/td\u003e\n\u003ctd\u003e12\" Front \/ 9\" Rear Complete Elite Lift System — 2020–2025 Silverado\/Sierra 2500HD\/3500HD 2WD\/4WD\u003c\/td\u003e\n\u003ctd\u003eBoxed sheet-metal UCAs; Elka 2.5 aluminum shock bodies with reservoirs; Deaver spring steel leaf packs; stainless braided brake lines; USA-manufactured\u003c\/td\u003e\n\u003ctd\u003e708 lbs\u003c\/td\u003e\n\u003ctd\u003eCognito SM Series Ball Joint UCA Kit (pair), SM Series Compression Struts, patented Pitman \u0026amp; Idler Arm Support Kit, Elka 2.5 Reservoir front shocks (pair), forged torsion bar keys (pair), Deaver replacement rear leaf packs (pair), 5\" powder-coated steel rear blocks with zinc plated U-bolts, stainless steel braided brake lines, all mounting hardware\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eVerified Fitment (OFAS Standard)\u003c\/h3\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — Chevrolet Silverado 2500HD:\u003c\/strong\u003e\u003cbr\u003e2020–2025 Chevrolet Silverado 2500HD Base, Custom, WT, LT, LTZ, High Country 2WD\/4WD\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — Chevrolet Silverado 3500HD:\u003c\/strong\u003e\u003cbr\u003e2020–2025 Chevrolet Silverado 3500HD Base, WT, LT, LTZ, High Country 2WD\/4WD SRW \u0026amp; DRW\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — GMC Sierra 2500HD:\u003c\/strong\u003e\u003cbr\u003e2020–2022 GMC Sierra 2500HD Base 2WD\/4WD\u003cbr\u003e2020–2025 GMC Sierra 2500HD SLE, SLT, AT4, Denali 2WD\/4WD\u003cbr\u003e2023–2025 GMC Sierra 2500HD Pro 2WD\/4WD\u003cbr\u003e2024–2025 GMC Sierra 2500HD Denali Ultimate 2WD\/4WD\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — GMC Sierra 3500HD:\u003c\/strong\u003e\u003cbr\u003e2020–2022 GMC Sierra 3500HD Base 2WD\/4WD\u003cbr\u003e2020–2025 GMC Sierra 3500HD SLE, SLT, AT4, Denali 2WD\/4WD SRW \u0026amp; DRW\u003cbr\u003e2023–2025 GMC Sierra 3500HD Pro 2WD\/4WD SRW \u0026amp; DRW\u003cbr\u003e2024–2025 GMC Sierra 3500HD Denali Ultimate 2WD\/4WD SRW \u0026amp; DRW\u003c\/p\u003e\u003cp\u003e❌ \u003cstrong\u003eREQUIREMENTS \u0026amp; CRITICAL NOTICES:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e⚠️ CV FRONT DRIVELINE REQUIRED — 4WD TRUCKS:\u003c\/strong\u003e The stock front driveline is NOT supported with this kit on 4WD trucks. A CV front driveline upgrade must be installed before operating the vehicle in 4WD under any conditions. Failure to install a CV front driveline before engaging 4WD will result in driveline damage. Contact the OFAS team to confirm the correct CV driveline for your specific truck before ordering.\u003cbr\u003eRequires front alignment immediately post-installation — at 12 inches of front lift, caster and camber correction is critical before any driving. Do not operate the vehicle before alignment is completed.\u003cbr\u003eRequires driveline u-joint angle verification post-installation — at 12 inches of front lift and 9 inches of rear lift, driveline operating angles must be verified and corrected before towing at rated capacity.\u003cbr\u003eRequires ADAS recalibration if equipped with forward collision alert, lane departure warning, adaptive cruise control, or Super Cruise.\u003cbr\u003eRequires professional brake system inspection post-installation to verify stainless braided brake line routing, clearance, and connection integrity before driving.\u003cbr\u003eRequires rear U-bolt re-torque after the first 500 miles of use.\u003cbr\u003e\u003cstrong\u003eShipping Notice:\u003c\/strong\u003e At 708 lbs, this kit ships via LTL freight carrier on multiple pallets. Residential delivery is included.\u003c\/p\u003e\u003ch3\u003eInstallation \u0026amp; Technical Notes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEstimated Install Time:\u003c\/strong\u003e 19-Hour DIY Install — this is a complete front and rear suspension system replacement requiring a 2-post or 4-post lift, comprehensive hand tools, torque wrench, spring compressor, torsion bar unloading tool, and alignment equipment or an immediate post-installation alignment appointment.\u003cbr\u003e\u003cstrong\u003eCV Driveline:\u003c\/strong\u003e Install the CV front driveline upgrade before engaging 4WD under any circumstances. The stock front driveline is not supported with this kit — this is not a speed-limited advisory, it is a hard requirement for all 4WD operation.\u003cbr\u003e\u003cstrong\u003eTorsion Bar Keys:\u003c\/strong\u003e Unload the factory torsion bars completely before removing the factory adjuster keys. Install the forged Cognito keys and set ride height per Cognito's included instructions — verify droop travel is adequate after setting height before finalizing.\u003cbr\u003e\u003cstrong\u003eAlignment Required:\u003c\/strong\u003e Yes — professional front alignment is mandatory immediately after installation. At 12 inches of front lift, caster and camber deviation from factory specification is at its maximum and must be corrected before any driving.\u003cbr\u003e\u003cstrong\u003eElka DSC Setup:\u003c\/strong\u003e Set Elka high- and low-speed compression adjusters to the softest position initially and tune incrementally based on load, tire size, and terrain preference.\u003cbr\u003e\u003cstrong\u003eTorque Specifications:\u003c\/strong\u003e Refer to Cognito's included instruction sheet for all component torque values — torque all fasteners with the suspension at ride height under load. Re-torque all critical fasteners after the first 500 miles.\u003cbr\u003e\u003cstrong\u003eBrake Line Routing:\u003c\/strong\u003e Route and secure stainless braided brake lines per Cognito's included instructions — verify clearance to all suspension components through the full travel arc before driving.\u003cbr\u003e\u003cstrong\u003eShipping Notice:\u003c\/strong\u003e At 708 lbs on multiple pallets, coordinate delivery logistics before ordering. Residential delivery is included but requires a clear delivery path and personnel to assist with unloading.\u003c\/p\u003e\u003ch3\u003eWheel \u0026amp; Tire Fitment\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eMaximum Confirmed Tire Size:\u003c\/strong\u003e 40x13.5\" on a 10-inch wide wheel with 4.5-inch backspacing — verified clearance with this kit at 12 inches of front lift and 9 inches of rear lift on the 2020–2025 Silverado\/Sierra 2500HD\/3500HD platform.\u003cbr\u003e\u003cstrong\u003eWheel Width:\u003c\/strong\u003e 10 inches recommended for maximum tire size\u003cbr\u003e\u003cstrong\u003eMaximum Backspacing:\u003c\/strong\u003e 4.5 inches with 40x13.5\" tires\u003cbr\u003eContact the OFAS team to verify inner fender clearance, fender flare compatibility, and offset requirements for your specific cab, bed, and fender configuration before finalizing wheel and tire selection at this tire size.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003eOur team is standing by to confirm your CV front driveline selection, torsion bar spring rate, drivetrain configuration, and 40-inch tire and wheel setup for your specific truck. Purchase with confidence; we review every build.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Cognito Motorsports Truck","offers":[{"title":"Default Title","offer_id":51705399411009,"sku":"210-P1178","price":10599.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/210-P1178-GFGQ.jpg?v=1778201809","url":"https:\/\/obsidianforgedautosupply.com\/products\/cognito-12-inch-elite-lift-kit-elka-2-5-reservoir-shocks-silverado-sierra-2500hd-3500hd-2020-210-p1178","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}