This combo pack includes everything you need to apply Under Gone™ Undercoating directly from our new 32 oz Ready-to-Spray (RTS) bottles using the included Paint/Undercoating Applicator Gun and Extension Hoses. No pouring into a separate cup, no transferring product, and less mess. Simply attach an Under Gone™ RTS bottle to the applicator gun and start applying.

Under Gone™ undercoating is a soft, oil rust-converting salt barrier designed to help protect undercarriages, frames, trailers, equipment, and other metal surfaces exposed to salt, brine, moisture, and corrosion. The 32 oz RTS bottles make it easy to work in sections, move around the vehicle, and swap bottles as needed.

This kit also includes two extension hoses that attach directly to the applicator gun, making it easier to reach inside frames, tight areas, crossmembers, wheel wells, and other hard-to-access spots.

Kit Includes:

• Six 32 oz Under Gone™ Ready-to-Spray (RTS) Bottles
• One Paint/Undercoating Applicator Gun
• Two Extension Hoses for hard-to-reach areas

Why You’ll Like It:

• Ready-to-spray setup — bottles screw directly onto the applicator gun
• Less mess — no need to pour product into a separate container
• Great for undercarriage application — ideal for frames, wheel wells, suspension areas, trailers, equipment, and more
• Extension hoses included — helps reach inside frames and tight areas
• Easy to use, store, and swap bottles
• Perfect for DIY users, shops, mobile applicators, and small undercoating jobs

For best results, remove loose or flaking rust before application and rinse the surface with Salts Gone® first to remove soluble salts. Allow the surface to dry before applying Under Gone™ Undercoating.