{"title":"Mega Duty","description":"","products":[{"product_id":"chevrolet-3500-silverado-pickup-2011-2020-hd","title":"Chevrolet 3500 Silverado 2011 – 2026 HD Kit","description":"\u003cp data-mce-fragment=\"1\"\u003eRoadActive Suspension kit includes an easy to install RAS Heavy Duty Helper Springs for each rear leaf spring. This RAS® kit is designed to stabilize, to reduce bounce and improve stability for towing or hauling while providing same-as or better-than stock unloaded ride and performance. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*If your truck \u003cstrong data-mce-fragment=\"1\"\u003edoes not\u003c\/strong\u003e have factory top overload springs, expect 30-40% increase suspension strength.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e*If your truck \u003cstrong data-mce-fragment=\"1\"\u003edoes\u003c\/strong\u003e have a factory top overload: it must be removed and we recommend RAS® Mega-Duty for that application\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Truck Comes with With Factory Overload","offer_id":39590437847248,"sku":"3611-CMD","price":549.0,"currency_code":"USD","in_stock":true},{"title":"Without Factory Overload","offer_id":39590437880016,"sku":"3611-HD","price":589.0,"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":"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":"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":"ford-f-350-2011-2026-mega-duty-kit","title":"Ford F-350 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-start=\"729\" data-end=\"783\"\u003e\u003cstrong\u003eIf truck has factory overload spring, top overload spring must be removed for installation of RAS. Mega-Duty will provide more strength than the factory overload spring.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"729\" data-end=\"783\"\u003e\u003cstrong\u003eIf you're squatting with your F-350 — Mega-Duty is the answer.\u003c\/strong\u003e\u003c\/p\u003e","brand":"RoadActive Suspension","offers":[{"title":"Truck Does Have Factory Top Overload Spring","offer_id":44994325315792,"sku":"3611-SLMD","price":649.0,"currency_code":"USD","in_stock":true},{"title":"Truck Does Not Have Factory Overload Spring","offer_id":44994325283024,"sku":"3611-SMD","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/7585\/4800\/files\/3611SHDSelects2_Small_square.png?v=1755892246"},{"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":"Default Title","offer_id":44994340520144,"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"}],"url":"https:\/\/www.roadactivesuspension.com\/collections\/mega-duty.oembed","provider":"RoadActive Suspension","version":"1.0","type":"link"}