{"product_id":"under-gone-rust-converting-undercoating-kit","title":"Soft Coat Rust Converting Undercoating Kit | Under Gone® | Salts Gone®","description":"\u003ch2\u003e🛡️ Soft, Self-Healing Rust Protection That Keeps Working\u003c\/h2\u003e\n\u003cp\u003eProtect your vehicle with a corrosion-control system designed to \u003cstrong\u003ecreep into seams, address existing rust, and remain soft and active over time\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Under Gone™ Soft-Coat Rust Protection Kit gives you everything needed to prep and protect a typical vehicle with a soft, flexible undercoating designed for frames, chassis components, seams, cavities, and other rust-prone areas.\u003c\/p\u003e\n\u003cp\u003eUnlike hard coatings that cure into a rigid shell, \u003cstrong\u003eUnder Gone™ remains soft and self-healing\u003c\/strong\u003e, allowing it to creep into difficult-to-reach areas and flow back over surfaces that may be disturbed by road debris or normal vehicle use.\u003c\/p\u003e\n\u003cp\u003eAnd unlike many traditional soft undercoatings that simply cover existing corrosion, \u003cstrong\u003eUnder Gone™ also helps chemically convert and stabilize existing surface rust while leaving behind a calcium-sulfonate-based protective barrier.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe result is an easy-to-apply rustproofing system designed for \u003cstrong\u003etrucks, cars, trailers, work vehicles, equipment, and other metal surfaces regularly exposed to moisture, road salt, and harsh environments.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eThe Under Gone™ Protection Process\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003ePREP → SPRAY → PROTECT\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePREP:\u003c\/strong\u003e Remove road salt, brine, and corrosive contamination with Salts Gone®.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPRAY:\u003c\/strong\u003e Apply Under Gone™ to the frame, underbody, seams, cavities, and other rust-prone metal surfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePROTECT:\u003c\/strong\u003e Under Gone™ helps treat existing surface rust while leaving behind a soft, creeping, self-healing corrosion barrier that stays active over time.\u003c\/p\u003e\n\u003cp\u003eSimple application. Serious rust protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e⭐ Why Choose Under Gone™?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConverts \u0026amp; Protects:\u003c\/strong\u003e Helps chemically address existing surface rust instead of simply covering it.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSoft \u0026amp; Self-Healing:\u003c\/strong\u003e Remains flexible and can flow back over areas disturbed by road debris, vibration, or normal use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCreeps Into Hard-to-Reach Areas:\u003c\/strong\u003e Designed to penetrate seams, crevices, boxed sections, and other areas where corrosion often begins.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCalcium Sulfonate Protection:\u003c\/strong\u003e Creates a corrosion-resistant barrier designed to help protect steel from moisture and environmental exposure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWon't Cure Into a Hard Shell:\u003c\/strong\u003e Stays soft and active instead of becoming rigid or brittle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEasy to Inspect \u0026amp; Maintain:\u003c\/strong\u003e The coating can be checked, touched up, and refreshed over time as needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for Harsh Environments:\u003c\/strong\u003e Helps protect against road salt, brine, moisture, oxygen, and other common causes of corrosion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eComplete Vehicle System:\u003c\/strong\u003e Includes the coating, surface-prep solution, applicator gun, and extension hoses needed for a thorough application.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📦 What's Included\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003e8 Quarts of Under Gone™ Rust-Converting Undercoating\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eA full \u003cstrong\u003e2 gallons of Under Gone™\u003c\/strong\u003e for protecting frames, chassis components, seams, cavities, and other corrosion-prone areas.\u003c\/p\u003e\n\u003cp\u003eUnder Gone™ combines rust-converting chemistry with a soft, calcium-sulfonate-based protective barrier designed to remain active after application.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eUndercoating Applicator Gun\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eProvides controlled spray application for coating broad areas of the frame and underbody.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSpray Gun Extension Hoses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eReach deeper into \u003cstrong\u003eboxed frames, cavities, channels, seams, and other difficult-to-access areas\u003c\/strong\u003e where corrosion can begin long before it becomes visible from the outside.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSalts Gone® Hose End Sprayer\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eProper rust protection starts with proper preparation.\u003c\/p\u003e\n\u003cp\u003eSalts Gone® helps remove road salt, brine, and other corrosive salt contamination before Under Gone™ is applied, helping prevent those contaminants from becoming trapped beneath the protective coating.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e🚙 How Much Will One Kit Cover?\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eOne Kit Is Designed for One Typical Vehicle\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis kit is intentionally sized to provide enough material for a \u003cstrong\u003etypical passenger vehicle or pickup truck\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWith \u003cstrong\u003e8 quarts — 2 full gallons — of Under Gone™\u003c\/strong\u003e, you'll have material for broad frame and underbody coverage as well as seams, cavities, and hard-to-reach areas.\u003c\/p\u003e\n\u003cp\u003eExact coverage will vary depending on:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eVehicle size\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAmount of surface area being coated\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApplication thickness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExisting surface condition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOverspray\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow extensively internal cavities and boxed sections are treated\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a typical passenger vehicle or pickup truck, \u003cstrong\u003eone complete kit should provide the material needed for a thorough application\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eExtra-large trucks, commercial vehicles, or unusually extensive applications may require additional material.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e🔧 How to Apply the Under Gone™ System\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eSTEP 1 — Prep With Salts Gone®\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eLong-lasting rust protection starts with a properly prepared surface.\u003c\/p\u003e\n\u003cp\u003eUse the included \u003cstrong\u003eSalts Gone® Hose End Sprayer\u003c\/strong\u003e to thoroughly wash areas that will be coated, helping remove road salt, brine, and other corrosive salt contamination.\u003c\/p\u003e\n\u003cp\u003eThis is especially important on vehicles that have been driven in winter conditions or regularly exposed to salt.\u003c\/p\u003e\n\u003cp\u003eAllow the surface to properly dry before applying Under Gone™.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSTEP 2 — Apply Under Gone™\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUse the included applicator gun to spray Under Gone™ onto the areas you want to protect.\u003c\/p\u003e\n\u003cp\u003eFocus on corrosion-prone areas such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFrames and chassis components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCrossmembers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSuspension mounting areas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWheel wells\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeams and overlapping metal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWelded areas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBrackets and supports\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBoxed frame sections\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInternal cavities and channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse the included extension hoses to reach inside enclosed areas where conventional spray patterns cannot easily reach.\u003c\/p\u003e\n\u003cp\u003eBecause Under Gone™ remains soft, it can \u003cstrong\u003ecreep into seams and irregular surfaces\u003c\/strong\u003e after application instead of simply sitting as a rigid coating on top of the metal.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eSTEP 3 — Let Under Gone™ Keep Working\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUnder Gone™ is intentionally different from a traditional paint or hard undercoating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIt does not cure into a hard shell.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInstead, it remains soft and active, helping maintain a protective barrier while allowing the coating to move, creep, and self-heal over time.\u003c\/p\u003e\n\u003cp\u003eBecause it remains accessible, the coating can also be \u003cstrong\u003einspected, touched up, or refreshed in the future\u003c\/strong\u003e as needed.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Under Gone™ Is Different\u003c\/h2\u003e\n\u003cp\u003eMany conventional soft rustproofing products are designed primarily to create a moisture barrier over the metal.\u003c\/p\u003e\n\u003cp\u003eUnder Gone™ takes a different approach.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eIt Helps Address the Rust That's Already There\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUnder Gone™ incorporates rust-converting chemistry designed to help chemically react with and stabilize existing surface rust.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eThen It Protects the Surface\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAfter application, the calcium-sulfonate-based coating remains soft and provides an active barrier between the metal and the moisture, salt, oxygen, and environmental exposure that contribute to continued corrosion.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAnd It Stays Active\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBecause the coating does not cure into a rigid shell, it can continue creeping into seams and hard-to-reach areas while maintaining the soft, self-healing characteristics many vehicle owners prefer from a rustproofing undercoating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConvert. Protect. Maintain.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSoft-Coat or Hard-Coat — Which Is Right for You?\u003c\/h2\u003e\n\u003cp\u003eSalts Gone® offers two different approaches to vehicle rust protection because not every customer wants the same type of coating.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eChoose Under Gone™ Soft-Coat Protection If You Want:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eA soft, flexible rustproofing coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSelf-healing protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA coating that creeps into seams and cavities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRust-converting chemistry built into the undercoating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasy future inspection and touch-ups\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtection that remains active instead of curing hard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eChoose a Thixo-Coat® Hard-Coat System If You Want:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eA hard, cured protective finish\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eZinc-enhanced corrosion protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGreater resistance to abrasion and impact\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA painted, semi-gloss finished appearance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA rigid long-term coating system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSoft or hard, the right system depends on how you want your vehicle protected.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cp\u003eThe Under Gone™ Soft-Coat Rust Protection Kit is ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePickup trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePassenger vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWork trucks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSUVs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVehicle frames and chassis\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUtility trailers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEquipment trailers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMarine trailers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAgricultural equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConstruction equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRestoration projects\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFleet vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOff-road vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOther steel surfaces exposed to moisture, road salt, and corrosive environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e🛡️ Don't Just Cover Rust. Convert It. Protect It.\u003c\/h2\u003e\n\u003cp\u003eRust often starts in the places you can't easily see — \u003cstrong\u003einside seams, around overlapping metal, within boxed frame sections, and in areas repeatedly exposed to moisture and road salt.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUnder Gone™ is designed to go after those areas with a different kind of rust protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWash away the salt.\u003cbr\u003eAddress the existing rust.\u003cbr\u003eSpray the areas corrosion attacks first.\u003cbr\u003eLeave behind a soft, active protective barrier.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Under Gone™ Soft-Coat Rust Protection Kit brings the entire process together in one convenient package, giving you the products and application tools needed to protect a typical vehicle from the places you can see to the places you can't.\u003c\/p\u003e","brand":"Salts Gone","offers":[{"title":"Default Title","offer_id":52386238300341,"sku":null,"price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0249\/2170\/2485\/files\/ThixoHES_RTS_Bottle_Case_Pack_Product_Images_2026_2.png?v=1787327804","url":"https:\/\/saltsgone.com\/products\/under-gone-rust-converting-undercoating-kit","provider":"Salts Gone™","version":"1.0","type":"link"}