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

The 4x4LAB Ultra-Duty Magnetic Mounting Discs are engineered for serious off-grid touring, beach runs, salt spray, corrugations, extreme heat and long-term vibration.

Designed specifically for Starlink Mini and Gen 3 magnet mounts, these heavy-duty 76mm discs create a powerful magnetic base on non-metal surfaces like fibreglass, aluminium, canopy panels and composite roofs.

But we didn’t just copy what’s already out there. We upgraded it.

Each disc is manufactured from high-permeability steel and finished with a 4x4LAB MarineGuard Anti-Corrosion Coating, a specialised protective layer engineered to resist rust, oxidation and salt damage even in harsh coastal environments.

As far as we know, these are the most corrosion-resistant magnetic mounting discs available in Australia.

⭐ Why 4x4LAB Discs Are Different

• MarineGuard Protective Coating – engineered for beach driving, salt air and extreme Aussie conditions. Designed to resist rust long-term.
• Ultra-Duty Steel Core – optimised for maximum magnetic flux transfer and stronger pull force.
• Stronger Magnetic Hold – improves magnet grip compared to mounting directly on thin vehicle roof panels.
• Genuine 3M VHB Industrial Adhesive – serious bonding power without drilling.
• Heavy-Duty 2mm Construction – thicker, more stable platform for consistent magnet contact.
• Low-Profile 76mm Design – clean, flush installation under your magnet mount.

Why Use These Even on a Metal Roof?

Even if your vehicle has a steel roof and you're using a Starlink Mini magnet mount, these discs can significantly enhance magnetic pull force.

Why?

Most modern vehicle roofs are:

• Thin sheet metal

• Curved

• Reinforced internally

• Painted and coated

This reduces magnetic efficiency.

Our high-permeability steel discs create a concentrated magnetic surface allowing your magnet mount to grab harder and sit flatter.

More grip. More stability. Less movement.

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

Installation (Simple But Important)

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.

Specifications

Diameter: 76mm
Thickness: ~2mm
Material: High-permeability ferrous steel
Coating: 4x4LAB MarineGuard Anti-Corrosion finish
Adhesive: Genuine 3M VHB
Pack Size: 4 discs

What’s Included

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

Why 4x4LAB?

We design for real-world Australian touring conditions, not showroom builds.

Every product we release is tested with vibration, heat, coastal exposure and real off-grid use in mind.

Tested for real Aussie off-grid conditions 🇦🇺

🚚 Fastest Shipping, True Aussie Customer Service

⚡ Free Express Shipping on orders over $49
⏱️ Same-day dispatch on business days when ordered before 5PM AEST
🏙️ Cities: 1–2 business day delivery to: Sydney, Melbourne, Brisbane, Perth, Adelaide, Canberra & Hobart
🌄 Rural areas: You’ll still receive it one of the fastest ways possible with consistent Australia Post Express shipping.

💬 Questions?

We usually reply within a few hours and always within 24 hours – real support from a real Aussie business.