{"product_id":"cognito-comfort-ride-torsion-bar-kit-silverado-sierra-2500hd-3500hd-510-91036","title":"Cognito Comfort Ride Torsion Bar Kit | 2011-2019 Silverado\/Sierra 2500HD\/3500HD","description":"\u003cp\u003e\u003cstrong\u003e⚠️ Torsion Keys Required:\u003c\/strong\u003e Due to the softer spring rate of these torsion bars, front ride height will sit lower than stock without torsion keys. Torsion keys are required to restore and maintain stock ride height after installation. They are not included in this kit — add them to your order before checkout or contact the OFAS team.\u003c\/p\u003e\u003ch2\u003eThe Obsidian Vision\u003c\/h2\u003e\u003cp\u003eThe factory torsion bars on the 2011–2019 K2 Silverado and Sierra 2500HD\/3500HD are tuned for maximum load capacity and towing stability — which produces a characteristically stiff, punishing ride on unladen trucks over rough pavement and washboard. The Cognito Comfort Ride Torsion Bar Kit replaces both factory torsion bars with a reduced-rate direct OEM replacement pair, built to OEM standards, that delivers a measurably softer and more compliant front ride quality without altering the factory suspension geometry. Left and right bars included, 1-hour DIY install, made in the USA. Torsion keys are required to maintain stock ride height — see the requirements section.\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\u003eReduces\u003c\/strong\u003e the front torsion bar spring rate below the factory specification — delivering a softer, more compliant initial ride response on unladen and lightly loaded 2011–2019 K2 2500HD\/3500HD trucks by decreasing the torsional stiffness that the factory bars use to support maximum payload and towing loads, absorbing road inputs that the OEM bars transmit directly to the chassis and cab.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces\u003c\/strong\u003e both factory torsion bars as a direct OEM-standard left and right pair — same mounting points, same installation procedure as the factory bars, no modification to the factory torsion bar adjuster bolts, crossmember, or suspension geometry required — a bolt-in ride quality upgrade that installs in approximately 1 hour with standard hand tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivers\u003c\/strong\u003e improved front ride quality on the K2 2500HD\/3500HD torsion bar front suspension platform — the same platform used across the 2011–2019 Silverado and Sierra 2500HD\/3500HD — by targeting the spring rate as the primary variable, without requiring shock replacement, lift kit installation, or geometry modification to achieve the ride quality improvement.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Cognito Comfort Ride Torsion Bars are built to OEM dimensional and material standards — correct bar diameter, correct spline count, correct length for the K2 2500HD\/3500HD torsion bar crossmember — with a reduced torsional spring rate as the sole engineering change. Because the softer rate allows the front suspension to settle lower at the same adjuster bolt position, torsion keys are required after installation to crank the adjuster back up to stock ride height. Without torsion keys, the front of the truck will sit lower than stock. At 71 lbs, this kit ships standard parcel.\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\u003e510-91036\u003c\/td\u003e\n\u003ctd\u003eReduced-Rate OEM Replacement Torsion Bar Kit — 2011–2019 K2 Silverado\/Sierra 2500HD\/3500HD 2WD\/4WD; Left and Right Pair; Torsion Keys Required (not included)\u003c\/td\u003e\n\u003ctd\u003eOEM-standard torsion bar steel; reduced torsional spring rate; USA-manufactured\u003c\/td\u003e\n\u003ctd\u003e71 lbs\u003c\/td\u003e\n\u003ctd\u003eLeft torsion bar; right torsion bar\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 (K2, 2011–2019):\u003c\/strong\u003e\u003cbr\u003e2011–2019 Chevrolet Silverado 2500HD WT, LT, LTZ 2WD\/4WD\u003cbr\u003e2015–2019 Chevrolet Silverado 2500HD High Country 2WD\/4WD\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — Chevrolet Silverado 3500HD (K2, 2011–2019):\u003c\/strong\u003e\u003cbr\u003e2011–2019 Chevrolet Silverado 3500HD WT, LT, LTZ 2WD\/4WD SRW \u0026amp; DRW\u003cbr\u003e2015–2019 Chevrolet Silverado 3500HD High Country 2WD\/4WD SRW \u0026amp; DRW\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — GMC Sierra 2500HD (K2, 2011–2019):\u003c\/strong\u003e\u003cbr\u003e2011–2014 GMC Sierra 2500HD WT 2WD\/4WD\u003cbr\u003e2011–2019 GMC Sierra 2500HD SLE, SLT, Denali 2WD\/4WD\u003cbr\u003e2015–2019 GMC Sierra 2500HD (base) 2WD\/4WD\u003c\/p\u003e\u003cp\u003e✅ \u003cstrong\u003eCONFIRMED — GMC Sierra 3500HD (K2, 2011–2019):\u003c\/strong\u003e\u003cbr\u003e2011–2014 GMC Sierra 3500HD WT 2WD\/4WD SRW \u0026amp; DRW\u003cbr\u003e2011–2019 GMC Sierra 3500HD SLE, SLT, Denali 2WD\/4WD SRW \u0026amp; DRW\u003cbr\u003e2015–2019 GMC Sierra 3500HD (base) 2WD\/4WD SRW \u0026amp; DRW\u003c\/p\u003e\u003cp\u003e❌ \u003cstrong\u003eREQUIREMENTS \u0026amp; CRITICAL NOTICES:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e⚠️ TORSION KEYS REQUIRED — NOT INCLUDED:\u003c\/strong\u003e The softer spring rate of these torsion bars will cause the front of the truck to sit lower than stock at the factory adjuster bolt position. Torsion keys are required to restore and maintain stock ride height after installation. Torsion keys are not included in this kit. Contact the OFAS team to add compatible torsion keys to your order before shipping.\u003cbr\u003e\u003cstrong\u003e⚠️ K2 GENERATION ONLY (2011–2019):\u003c\/strong\u003e Engineered for the K2 generation Silverado\/Sierra 2500HD\/3500HD torsion bar front suspension only. Not compatible with the T1 generation (2020–2026), which does not use a torsion bar front suspension.\u003cbr\u003eFront alignment check recommended after installation — verify caster and camber are within GM specification after setting ride height with torsion keys.\u003cbr\u003eRe-torque torsion bar adjuster bolts after the first 500 miles post-installation.\u003c\/p\u003e\u003ch3\u003eInstallation \u0026amp; Technical Notes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEstimated Install Time:\u003c\/strong\u003e 1-hour DIY install — with a floor jack, jack stands, basic hand tools, and a torque wrench.\u003cbr\u003e\u003cstrong\u003eTorsion Keys:\u003c\/strong\u003e Install torsion keys after installing the Comfort Ride torsion bars to restore stock ride height. Set the adjuster bolts to achieve the desired front ride height before performing a front alignment check.\u003cbr\u003e\u003cstrong\u003eRide Height Setting:\u003c\/strong\u003e After installing torsion keys, set the front ride height to stock specification using the torsion bar adjuster bolts. Measure front ride height at the factory measurement points before and after adjustment.\u003cbr\u003e\u003cstrong\u003eAlignment Check:\u003c\/strong\u003e Verify front caster and camber are within GM specification after setting ride height. A full alignment is recommended if caster or camber are out of spec.\u003cbr\u003e\u003cstrong\u003eTorque Specifications:\u003c\/strong\u003e Torque all torsion bar mounting and adjuster fasteners to GM specification.\u003cbr\u003e\u003cstrong\u003eRe-Torque Interval:\u003c\/strong\u003e Re-torque torsion bar adjuster bolts after the first 500 miles of driving post-installation.\u003c\/p\u003e\u003ch3\u003eWheel \u0026amp; Tire Fitment\u003c\/h3\u003e\u003cp\u003eThese torsion bars are a direct OEM replacement at stock ride height (with torsion keys installed) and do not alter wheel offset requirements or tire clearance beyond the factory specification. If torsion keys are used to achieve a lift above stock height, verify wheel and tire clearance at the elevated ride height before finalizing wheel and tire selection. Contact the OFAS team for torsion key and wheel\/tire fitment guidance for your specific build.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003eOur team is standing by to verify compatible torsion keys and confirm your front ride height target before you order — torsion keys are required and should ship with this kit. Purchase with confidence; we review every build.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Cognito Motorsports Truck","offers":[{"title":"Default Title","offer_id":51705397805377,"sku":"510-91036","price":899.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/1284\/1793\/files\/510-91036_0-GFGQ.jpg?v=1778201671","url":"https:\/\/obsidianforgedautosupply.com\/products\/cognito-comfort-ride-torsion-bar-kit-silverado-sierra-2500hd-3500hd-510-91036","provider":"Obsidian Forged Auto Supply","version":"1.0","type":"link"}