{"title":"Popular RAS® Kits","description":"","products":[{"product_id":"ford-f-150-pickup-two-wheel-drive-2015-2021-hd","title":"Ford F-150 (2WD) 2015 - 2026 HD Kit","description":"Get the best of both worlds with RoadActive Suspension® HD — the only suspension upgrade that strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control.\n\nUnlike suspension upgrades that require constant adjustment, maintenance, or compromise everyday comfort, RAS® HD reduces squat, excessive bounce, sway, and body roll without the hassle of airbags or harsh unloaded ride quality.\n\nThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade designed for trucks that tow, haul, and drive loaded regularly.\n\nHelps provide:\n\n• Up to 50% increase in rear suspension strength\n• Up to 2\" reduction in squat\n• Improved towing \u0026amp; hauling stability\n• Reduced sway, bounce, and axle wrap\n• Same-as or improved unloaded ride quality\n\nWith a quick 1-hour installation and zero maintenance, RAS® HD is one of the simplest and most effective ways to improve towing, hauling, and everyday driving performance.","brand":"RoadActive Suspension","offers":[{"title":"Default Title","offer_id":39504018538704,"sku":"3611-BHD","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611BHDSelects2_small_square_13503bce-b9ca-4315-be2b-f67ca73b43c1.png?v=1757087268"},{"product_id":"chevrolet-1500-silverado-pickup-1990-2021-hd","title":"Chevrolet 1500 Silverado 1990 - 2024 | HD Kit","description":"\u003cp\u003eBuilt for truck owners who tow, haul, and drive loaded regularly.\u003c\/p\u003e\n\u003cp\u003eRoadActive Suspension HD strengthens your factory leaf spring suspension to improve stability, reduce squat, and keep your truck controlled under load — without the hassle of airbags.\u003c\/p\u003e\n\u003cp\u003eBetter under load while improving unloaded ride quality and handling — that’s what makes RAS® different.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHelps provide:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 50% increase in rear suspension strength\u003c\/li\u003e\n\u003cli\u003eUp to 2\" reduction in squat\u003c\/li\u003e\n\u003cli\u003eImproved towing \u0026amp; hauling stability\u003c\/li\u003e\n\u003cli\u003eMaintain \u0026amp; improve unloaded ride\u003c\/li\u003e\n\u003cli\u003eReduced sway, bounce, and axle wrap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFully mechanical. No compressors, air lines, or maintenance. Progressive tension design adapts automatically to changing loads.\u003c\/p\u003e\n\u003c!-- COLLAPSED: Installation Video --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003eWatch Installation Video\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px; text-align: center;\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Dj_so_yQbVk?si=ZdKORJPB-gpFh3yW\" title=\"RoadActive Suspension Installation Video\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails open=\"\" style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003e FREE \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\" alt=\"RoadActive Suspension warehouse network ground coverage map\" style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp style=\"margin-top: 14px;\"\u003e\u003cstrong\u003e*Does not fit 2022-2024 models with single leaf spring\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Default Title","offer_id":39590323159248,"sku":"4611-HD","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/4611HDSelectsAgain2_small_square_364c247f-9b9f-4b19-a45e-9309c52db38f.png?v=1757087265"},{"product_id":"gmc-1500-sierra-pickup-1990-2022","title":"GMC 1500 Sierra 1990 - 2024 | HD Kit","description":"\u003cp\u003eGet the best of both worlds with this authentic RAS® Heavy Duty RoadActive Suspension kit -- the only solution that strengthens leaf springs by up to 50% while providing a more smooth, controlled ride at all times. \u003c\/p\u003e\n\u003cp\u003eUnlike other suspension upgrades that need constant adjustments \u0026amp; maintenance or negatively impact unloaded ride, RAS® greatly reduces squat, excessive bounce and body roll-- without hassle or sacrificing comfort.\u003c\/p\u003e\n\u003cp\u003e This 3-in-1 system offers the benefits of a helper spring, sway bar, and traction bar at the fraction of the cost of other upgrades. With a quick 1-hour installation and zero maintenance, it's the simplest most effective way to reduce squat and improve your truck's towing\/hauling performance. \u003cstrong\u003eTried and true since 1998.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c!-- COLLAPSED: Installation Video --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\" open=\"\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003eWatch Installation Video\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px; text-align: center;\"\u003e\u003ciframe title=\"RoadActive Suspension Installation Video\" src=\"https:\/\/www.youtube.com\/embed\/Dj_so_yQbVk?si=ZdKORJPB-gpFh3yW\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- COLLAPSED: FAQs (your items nested inside) --\u003e\n\u003cdetails open=\"\" style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003eFAQs (squat reduction, ride quality, how it works)\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cdetails style=\"border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px; margin-bottom: 8px;\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow does RAS® work?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003eRAS uses a variable-rate tension coil spring that attaches directly to your rear leaf springs. It works like a muscle, progressively engaging as load or force is applied. This keeps the leaf springs in an upright bowed position to prevent sag, improve stability, and enhance bounce isolation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- ADDED FAQ: Squat Reduction --\u003e\n\u003cdetails style=\"border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px; margin-bottom: 8px;\"\u003e\n\u003csummary\u003e\u003cstrong\u003eHow much does RAS reduce squat?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003eMost applications see a 2–3\" reduction in rear squat. The exact amount will depend on multiple factors such as vehicle size, load size, load placement, leaf spring condition, and the tension setting of the RAS.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- \/ADDED --\u003e\n\u003cdetails style=\"border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px; margin-bottom: 8px;\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWill RAS affect unloaded ride?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003eExpect same-as or better-than-stock unloaded ride with less bounce and more control.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px; margin-bottom: 8px;\"\u003e\n\u003csummary\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003eYes—in as little as 45 minutes with jack stands and hand tools. No drilling, no airlines.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px; margin-bottom: 8px;\"\u003e\n\u003csummary\u003e\u003cstrong\u003eWhy not airbags or helper springs?\u003c\/strong\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003eAirbags add complexity and maintenance. Other helper springs fix sag only, can negatively impact ride quality, and don’t deliver the same combination of benefits. \u003cstrong\u003eRAS is 3-in-1:\u003c\/strong\u003e controls squat, reduces sway, and improves traction.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003e FREE \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\" alt=\"RoadActive Suspension warehouse network ground coverage map\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp style=\"margin-top: 14px;\"\u003e\u003cem\u003e\u003cstrong\u003e*Does not fit 2022-2024 models with single leaf spring\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Default Title","offer_id":39603507495120,"sku":"4611-HD","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/4611HDSelectsAgain2_small_square_3dce68d6-af53-479c-9896-b5db6a8d9570.png?v=1756997461"},{"product_id":"toyota-tacoma-2023","title":"Toyota Tacoma 2023-2026","description":"\u003cp data-end=\"1229\" data-start=\"1036\"\u003eGet the best of both worlds with RoadActive Suspension® — the only suspension upgrade that strengthens your factory leaf springs by up to 50% while improving unloaded ride quality and handling.\u003c\/p\u003e\n\u003cp data-end=\"1428\" data-start=\"1234\"\u003eUnlike suspension upgrades that require constant adjustment, maintenance, or compromise everyday comfort, RAS® reduces squat, excessive bounce, sway, and body roll without the hassle of airbags.\u003c\/p\u003e\n\u003cp data-end=\"1739\" data-start=\"1433\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade. With a quick 1-hour installation and zero maintenance, RAS® is one of the simplest and most effective ways to improve towing, hauling, and everyday driving performance.\u003c\/p\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails open=\"\" style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e 1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003e FREE \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\" alt=\"RoadActive Suspension warehouse network ground coverage map\" style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp style=\"margin-top: 14px;\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e*Does not fit with TRD Pro Shocks or Tacoma models with rear coil spring suspension.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"My Tacoma Has Axle BELOW Leaf Spring","offer_id":44688737272016,"sku":"4614-SAT","price":539.0,"currency_code":"USD","in_stock":true},{"title":"My Tacoma Has Axle ABOVE Leaf Spring","offer_id":44688737304784,"sku":"4624-SAT","price":539.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/4614SatSelects2_small_square_8a44c3a5-818e-4be7-a07a-7b92d24d0719.png?v=1763755301"},{"product_id":"chevrolet-1500-silverado-2025","title":"2025-2026 GMC Sierra 1500 | HD Kit","description":"\u003cp\u003eBuilt for truck owners who tow, haul, and drive loaded regularly.\u003c\/p\u003e\n\u003cp\u003eRoadActive Suspension HD strengthens your factory leaf spring suspension to improve stability, reduce squat, and keep your truck controlled under load — without the hassle of airbags.\u003c\/p\u003e\n\u003cp\u003eBetter under load while improving unloaded ride quality and handling — that’s what makes RAS® different.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHelps provide:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 50% increase in rear suspension strength\u003c\/li\u003e\n\u003cli\u003eUp to 2\" reduction in squat\u003c\/li\u003e\n\u003cli\u003eImproved towing \u0026amp; hauling stability\u003c\/li\u003e\n\u003cli\u003eMaintain \u0026amp; improve unloaded ride\u003c\/li\u003e\n\u003cli\u003eReduced sway, bounce, and axle wrap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFully mechanical. No compressors, air lines, or maintenance. Progressive tension design adapts automatically to changing loads.\u003c\/p\u003e\n\u003c!-- COLLAPSED: Installation Video --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003eWatch Installation Video\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px; text-align: center;\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Dj_so_yQbVk?si=ZdKORJPB-gpFh3yW\" title=\"RoadActive Suspension Installation Video\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails open=\"\" style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003e FREE \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\" alt=\"RoadActive Suspension warehouse network ground coverage map\" style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp style=\"margin-top: 14px;\"\u003e\u003cstrong\u003e*Does not fit 2022-2024 models with single leaf spring\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Default Title","offer_id":44670889033936,"sku":"5611-TZHD","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/5611tzHDSelect11_1.png?v=1761079026"},{"product_id":"chevrolet-2500-silverado-2011-2025-mega-duty-kit","title":"Chevrolet 2500 Silverado 2011 – 2026 | Mega Duty Kit","description":"\u003cp data-start=\"0\" data-end=\"181\"\u003eGet the best of both worlds with RoadActive Suspension® Mega-Duty — our strongest suspension upgrade engineered for heavy payloads, serious towing, and demanding truck applications.\u003c\/p\u003e\n\u003cp data-start=\"183\" data-end=\"360\"\u003eMega-Duty strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control — without the hassle or maintenance of airbags.\u003c\/p\u003e\n\u003cp data-start=\"362\" data-end=\"457\"\u003eDesigned for 3\/4-ton and 1-ton trucks that tow and haul regularly, RAS® Mega-Duty helps reduce:\u003c\/p\u003e\n\u003cp data-start=\"459\" data-end=\"534\"\u003e• Up to 2\" of squat\u003cbr data-start=\"478\" data-end=\"481\"\u003e• Excessive bounce \u0026amp; body roll\u003cbr data-start=\"511\" data-end=\"514\"\u003e• Sway \u0026amp; axle wrap\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"601\"\u003eIndependently tested at the Transportation Research Center (TRC):\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"735\"\u003e• 23% reduction in road transmissibility\u003cbr data-start=\"643\" data-end=\"646\"\u003e• 43% improvement in pitch stability\u003cbr data-start=\"682\" data-end=\"685\"\u003e• Approximately 30% stronger spring rate than HD\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"905\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade with zero maintenance required.\u003c\/p\u003e\n\u003cp data-end=\"783\" data-start=\"729\"\u003e\u003cstrong\u003eIf you're squatting with your F-250 — Mega-Duty is the answer.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"With Factory Top Overload Spring","offer_id":44994318467280,"sku":"3611-CMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"Without Factory Top Overload Spring","offer_id":44994318500048,"sku":"3611-MD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611HDselects2_small_square_96276d9b-db02-4332-9677-e500adc264e3.png?v=1757087264"},{"product_id":"chevrolet-3500-silverado-2011-2025-mega-duty-kit","title":"Chevrolet 3500 Silverado 2011 – 2026 | Mega Duty Kit","description":"\u003cp data-start=\"0\" data-end=\"181\"\u003eGet the best of both worlds with RoadActive Suspension® Mega-Duty — our strongest suspension upgrade engineered for heavy payloads, serious towing, and demanding truck applications.\u003c\/p\u003e\n\u003cp data-start=\"183\" data-end=\"360\"\u003eMega-Duty strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control — without the hassle or maintenance of airbags.\u003c\/p\u003e\n\u003cp data-start=\"362\" data-end=\"457\"\u003eDesigned for 3\/4-ton and 1-ton trucks that tow and haul regularly, RAS® Mega-Duty helps reduce:\u003c\/p\u003e\n\u003cp data-start=\"459\" data-end=\"534\"\u003e• Up to 2\" of squat\u003cbr data-start=\"478\" data-end=\"481\"\u003e• Excessive bounce \u0026amp; body roll\u003cbr data-start=\"511\" data-end=\"514\"\u003e• Sway \u0026amp; axle wrap\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"601\"\u003eIndependently tested at the Transportation Research Center (TRC):\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"735\"\u003e• 23% reduction in road transmissibility\u003cbr data-start=\"643\" data-end=\"646\"\u003e• 43% improvement in pitch stability\u003cbr data-start=\"682\" data-end=\"685\"\u003e• Approximately 30% stronger spring rate than HD\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"905\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade with zero maintenance required.\u003c\/p\u003e\n\u003cp data-end=\"783\" data-start=\"729\"\u003e\u003cstrong\u003eIf you're squatting with your 1 ton truck — Mega-Duty is the answer.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*If your truck \u003cstrong\u003edoes\u003c\/strong\u003e have a factory top overload: it must be removed and RAS® HD will provide a slight improvement in suspension strength vs factory overload spring.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"With Factory Overload","offer_id":44994319319248,"sku":"3611-CMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"Without Factory Overload","offer_id":44994319352016,"sku":"3611-MD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611HDselects2_small_square_baf55fca-6b05-4870-b803-12ac2dec92d6.png?v=1757087263"},{"product_id":"gmc-3500-sierra-2011-2026-mega-duty-kit","title":"GMC 3500 Sierra 2011-2026 | Mega Duty Kit","description":"\u003cp data-start=\"0\" data-end=\"181\"\u003eGet the best of both worlds with RoadActive Suspension® Mega-Duty — our strongest suspension upgrade engineered for heavy payloads, serious towing, and demanding truck applications.\u003c\/p\u003e\n\u003cp data-start=\"183\" data-end=\"360\"\u003e\u003cstrong\u003eMega-Duty\u003c\/strong\u003e strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control — without the hassle or maintenance of airbags.\u003c\/p\u003e\n\u003cp data-start=\"362\" data-end=\"457\"\u003eDesigned for 3\/4-ton and 1-ton trucks that tow and haul regularly, RAS® Mega-Duty helps reduce:\u003c\/p\u003e\n\u003cp data-start=\"459\" data-end=\"534\"\u003e• Up to 2\" of squat\u003cbr data-start=\"478\" data-end=\"481\"\u003e• Excessive bounce \u0026amp; body roll\u003cbr data-start=\"511\" data-end=\"514\"\u003e• Sway \u0026amp; axle wrap\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"601\"\u003eIndependently tested at the Transportation Research Center (TRC):\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"735\"\u003e• 23% reduction in road transmissibility\u003cbr data-start=\"643\" data-end=\"646\"\u003e• 43% improvement in pitch stability\u003cbr data-start=\"682\" data-end=\"685\"\u003e• Approximately 30% stronger spring rate than HD\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"905\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade with zero maintenance required.\u003c\/p\u003e\n\u003cp data-start=\"729\" data-end=\"783\"\u003e\u003cstrong\u003eIf you're squatting with your 1 ton — Mega-Duty is the answer.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e*If your truck \u003cstrong\u003edoes\u003c\/strong\u003e have a factory top overload: it must be removed and RAS® HD will provide a slight improvement in suspension strength vs factory overload spring.\u003c\/span\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Does Have Factory Top Overload Spring","offer_id":44994319745232,"sku":"3611-CMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"Does Not Have Factory Top Overload Spring","offer_id":44994319712464,"sku":"3611-MD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611HDselects2_small_square_63aafbdf-52f4-4499-a323-1f2c70af254d.png?v=1755891238"},{"product_id":"ford-f-250-2011-2026-mega-duty-kit","title":"Ford F-250 2011-2026 | Mega Duty Kit","description":"\u003cp data-end=\"181\" data-start=\"0\"\u003eGet the best of both worlds with RoadActive Suspension® Mega-Duty — our strongest suspension upgrade engineered for heavy payloads, serious towing, and demanding truck applications.\u003c\/p\u003e\n\u003cp data-end=\"360\" data-start=\"183\"\u003eMega-Duty strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control — without the hassle or maintenance of airbags.\u003c\/p\u003e\n\u003cp data-end=\"457\" data-start=\"362\"\u003eDesigned for 3\/4-ton and 1-ton trucks that tow and haul regularly, RAS® Mega-Duty helps reduce:\u003c\/p\u003e\n\u003cp data-end=\"534\" data-start=\"459\"\u003e• Up to 2\" of squat\u003cbr data-end=\"481\" data-start=\"478\"\u003e• Excessive bounce \u0026amp; body roll\u003cbr data-end=\"514\" data-start=\"511\"\u003e• Sway \u0026amp; axle wrap\u003c\/p\u003e\n\u003cp data-end=\"601\" data-start=\"536\"\u003eIndependently tested at the Transportation Research Center (TRC):\u003c\/p\u003e\n\u003cp data-end=\"735\" data-start=\"603\"\u003e• 23% reduction in road transmissibility\u003cbr data-end=\"646\" data-start=\"643\"\u003e• 43% improvement in pitch stability\u003cbr data-end=\"685\" data-start=\"682\"\u003e• Approximately 30% stronger spring rate than HD\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"905\" data-start=\"737\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade with zero maintenance required.\u003c\/p\u003e\n\u003cp data-end=\"783\" data-start=\"729\"\u003e\u003cstrong\u003e*If your truck does have a factory top overload, it must be removed in order to install RAS and will provide slightly better than factory suspension strength.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"783\" data-start=\"729\"\u003e\u003cstrong\u003eIf you're squatting with your F-250 — Mega-Duty is the answer.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e🚚 1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003e FREE \u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\" alt=\"RoadActive Suspension warehouse network ground coverage map\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"No Factory Overload Spring","offer_id":44994320203984,"sku":"3611-SMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"With Top Factory Overload Spring","offer_id":44994320236752,"sku":"3611-SLMD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611SHDSelects2_Small_square_8979d788-5a8d-4d0d-b3ff-2fe2f2fe0d74.png?v=1757007808"},{"product_id":"gmc-2500-sierra-2011-2026-mega-duty-kit","title":"GMC 2500 Sierra 2011- 2026 | Mega Duty Kit","description":"\u003cp data-start=\"0\" data-end=\"181\"\u003eGet the best of both worlds with RoadActive Suspension® Mega-Duty — our strongest suspension upgrade engineered for heavy payloads, serious towing, and demanding truck applications.\u003c\/p\u003e\n\u003cp data-start=\"183\" data-end=\"360\"\u003eMega-Duty strengthens your factory leaf springs by up to 50% while improving unloaded ride quality, handling, and overall control — without the hassle or maintenance of airbags.\u003c\/p\u003e\n\u003cp data-start=\"362\" data-end=\"457\"\u003eDesigned for 3\/4-ton and 1-ton trucks that tow and haul regularly, RAS® Mega-Duty helps reduce:\u003c\/p\u003e\n\u003cp data-start=\"459\" data-end=\"534\"\u003e• Up to 2\" of squat\u003cbr data-start=\"478\" data-end=\"481\"\u003e• Excessive bounce \u0026amp; body roll\u003cbr data-start=\"511\" data-end=\"514\"\u003e• Sway \u0026amp; axle wrap\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"601\"\u003eIndependently tested at the Transportation Research Center (TRC):\u003c\/p\u003e\n\u003cp data-start=\"603\" data-end=\"735\"\u003e• 23% reduction in road transmissibility\u003cbr data-start=\"643\" data-end=\"646\"\u003e• 43% improvement in pitch stability\u003cbr data-start=\"682\" data-end=\"685\"\u003e• Approximately 30% stronger spring rate than HD\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"905\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThis fully mechanical 3-in-1 system combines the benefits of a helper spring, sway bar, and traction bar into one simple bolt-on upgrade with zero maintenance required.\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Truck Comes With Factory Top Overload Spring","offer_id":45034788585680,"sku":"3611-CMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"Does Not Have Factory Top Overload Spring","offer_id":45034788618448,"sku":"3611-MD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611HDselects2_small_square_57e20bc3-8f98-4b72-8232-d68af9c1bfd4.png?v=1756930679"},{"product_id":"2025-2026-chevy-1500-hd-kit","title":"2025-2026 Chevy Silverado 1500 | HD Kit","description":"\u003cp\u003eBuilt for truck owners who tow, haul, and drive loaded regularly.\u003c\/p\u003e\n\u003cp\u003eRoadActive Suspension HD strengthens your factory leaf spring suspension to improve stability, reduce squat, and keep your truck controlled under load — without the hassle of airbags.\u003c\/p\u003e\n\u003cp\u003eBetter under load while improving unloaded ride quality and handling — that’s what makes RAS® different.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHelps provide:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUp to 50% increase in rear suspension strength\u003c\/li\u003e\n\u003cli\u003eUp to 2\" reduction in squat\u003c\/li\u003e\n\u003cli\u003eImproved towing \u0026amp; hauling stability\u003c\/li\u003e\n\u003cli\u003eReduced sway, bounce, and axle wrap\u003c\/li\u003e\n\u003cli\u003eSame-as or improved unloaded ride quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFully mechanical. No compressors, air lines, or maintenance. Progressive tension design adapts automatically to changing loads.\u003c\/p\u003e\n\u003c!-- COLLAPSED: Installation Video --\u003e\n\u003cdetails style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003eWatch Installation Video\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px; text-align: center;\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Dj_so_yQbVk?si=ZdKORJPB-gpFh3yW\" title=\"RoadActive Suspension Installation Video\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- COLLAPSED: Shipping (with inline map) --\u003e\n\u003cdetails open=\"\" style=\"margin: 12px 0; border: 1px solid #e5e5e5; border-radius: 6px; padding: 10px;\"\u003e\n\u003csummary style=\"cursor: pointer; font-weight: 600;\"\u003e1–2 Day In-Network Ground Shipping \u003cspan style=\"display: inline-block; background: #c00; color: #fff; font-size: 12px; font-weight: bold; padding: 2px 6px; border-radius: 4px; margin-left: 8px;\"\u003eFREE\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/RAS_Network_Ground_Map.png?v=1755621326\" alt=\"RoadActive Suspension warehouse network ground coverage map\" style=\"max-width: 100%; height: auto; border: 1px solid #e5e5e5; border-radius: 6px;\"\u003e\n\u003cdiv style=\"font-size: 12px; color: #666; margin-top: 6px;\"\u003eTransit estimates shown. Actual delivery times may vary.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c!-- Compatibility note --\u003e\n\u003cp style=\"margin-top: 14px;\"\u003e\u003cstrong\u003e*Does not fit 2022-2024 models with single leaf spring\u003c\/strong\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Default Title","offer_id":44997352456400,"sku":"5611-TZHD","price":589.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/5611tzHDSelect11_1.png?v=1761079026"}],"url":"https:\/\/www.roadactivesuspension.com\/collections\/popular-ras%c2%ae-kits.oembed","provider":"RoadActive Suspension","version":"1.0","type":"link"}