XTroll Chassis Guard underbody rust protection is the ultimate rust prevention spray for 4WDs, utes, and trailers. Once applied, it creates an impervious barrier that protects your vehicle's underbody from saltwater, sand, and corrosion. As a result, it stops existing rust in its tracks and prevents new rust from forming. XTroll Chassis Guard is Australian-made and suitable for all vehicles, both new and older.

Unlike wax-based underbody coatings, XTroll Chassis Guard dries to a clear, hard finish. Because of this, it does not attract dirt or wash off in water crossings. It is ideal for beach driving, coastal living, and off-road use where saltwater exposure is constant. In addition, the easy-to-use spray bottle means no professional application is needed — any 4WD owner can apply it at home.

Coverage is straightforward. One litre covers the underbody of most 4WDs. Two litres is recommended for heavily corroded vehicles. A second coat can be applied 4–6 hours after the first. After that, allow at least 12 hours drying time before use.

XTroll Chassis Guard underbody rust protection:

• Stops and prevents saltwater and rust damage
• Creates a hard, clear, long-lasting finish
• Guards against sand, mud, and corrosion
• Safe for all underbody surfaces including steel and aluminium
• Suitable for new and older vehicles

Coverage & Application

• 1 litre covers the underbody of most 4WDs
• 2 litres for heavily corroded vehicles
• Apply evenly across all underbody surfaces
• Second coat optional after 4–6 hours
• Allow 12 hours drying time minimum
• Clean up with mineral turps
• Avoid sensors, wiring connectors, and paintwork

Surface Preparation

• Apply to a clean surface
• Wash with detergent, degrease, then rinse
• Allow to dry completely before applying
• Allow 7 days before exposure to heavy saltwater environments