3M Ultra-Duty Adhesive Mounting Discs for Magnets 4 Pack

Upgrade your magnetic mount with the 4x4LAB Ultra-Duty Mounting Discs.

Designed for serious off-grid use, these 76mm discs create a strong magnetic base on fibreglass, aluminium and composite surfaces, while also boosting hold on standard steel roofs. Built with high-permeability steel and a MarineGuard anti-corrosion coating, they’re made to handle salt, heat, vibration and harsh Aussie conditions.

With genuine 3M VHB adhesive and a thick, stable design, they deliver more grip, better stability and a cleaner mount for Starlink Mini, Gen 3 and other magnetic accessories.

• MarineGuard anti-corrosion coating for salt, moisture and harsh conditions
• High-permeability steel core for stronger magnetic performance
• Increases magnetic hold compared to mounting directly to vehicle panels
• Genuine 3M VHB adhesive for secure, drill-free installation
• Heavy-duty 2mm construction for stability and durability
• 76mm low-profile design for clean, flush mounting
• Creates a magnetic base on fibreglass, aluminium and composite surfaces
• Improves grip and reduces movement on thin or curved steel roofs
• Compatible with Starlink Mini and Gen 3 magnet mounts
• Also suits magnetic antennas and other base-mounted accessories

Built for:

• 4WD touring
• Beach driving
• Campervans & caravans
• Canopies & tray setups
• Boats (non-submersible areas)
• Off-grid Starlink installs

Compatible with:

• Starlink Mini magnet mount
• Starlink Gen 3 magnet mount
• GPS / LTE / UHF / CB magnetic antennas
• Any magnetic base accessory

Specifications:

• Material: High-permeability ferrous steel
• Coating: 4x4LAB MarineGuard Anti-Corrosion finish
• Adhesive: Genuine 3M VHB
• Pack Size: 4 discs

Dimensions:

• Diameter: 76mm
• Thickness: ~2mm

Installation:

1. Clean surface thoroughly (isopropyl alcohol recommended).
2. Peel backing from genuine 3M VHB adhesive.
3. Press firmly for 30 seconds.
4. Allow 24 hours for full adhesive cure before attaching magnet.

Always mount at your own risk. Ensure surface is flat, clean and suitable. Do not use on textured, weak or contaminated surfaces.

• Suitable for fibreglass, aluminium, composite and thin steel surfaces
• Can be used on steel roofs to improve magnetic strength and stability
• Requires a clean, flat surface for proper adhesion
• Not suitable for textured, uneven or contaminated surfaces
• Uses permanent 3M VHB adhesive – not designed for repositioning
• Allow 24 hours cure time before attaching magnet mount
• Performance improves with proper surface prep (isopropyl alcohol recommended)
• Not designed for submersion or constant water exposure
• Ideal for off-grid, touring, beach and vibration-heavy environments
• Always install securely and use at your own risk

• x4 4x4LAB Ultra-Duty Magnetic Mounting Discs
• Pre-applied genuine 3M VHB backing