ARK Square Brake Mounting Plate – Suits 40mm Round Axle for Electric & Mechanical Drum Brakes (SKU: MPS40R)

ARK MPS40R Brake Mounting Plate is a versatile and durable square backing plate designed to fit 40mm round axles. It’s compatible with both mechanical and electric drum brakes, making it the perfect base for lightweight trailers, campers, and utility builds.

Whether you’re building a new trailer or upgrading your braking system, this plate ensures a rock-solid base for securing your brake backing plate. Built from heavy-duty steel, it delivers strength and stability under load, while its pre-drilled square format simplifies alignment and installation.

Key Features:

• Square mounting plate for 40mm round trailer axles
• Supports mechanical and electric drum brake backing plates
• Heavy-duty steel construction for long-term durability
• Pre-drilled for easy, precise installation
• Ideal for small to mid-size trailers, campers, and light-duty builds

This plate is the foundation of a reliable braking system—get it right from the start with a part that’s built to last and easy to fit.

FAQ

Q: What axle size does this suit?

A: It’s designed to fit 40mm round axles, common on small to medium trailers in Australia.

Q: What kind of brakes can I install on it?

A: You can use both mechanical and electric drum brake backing plates with this mounting bracket.

Q: Is it pre-drilled?

A: Yes, the plate comes with a standard square hole pattern for easy and accurate installation.

Q: Can I weld this plate onto my axle?

A: While it’s designed for bolt-on use, welding is possible if properly aligned and done by a qualified installer.

Evaluation & Recommendation

The ARK MPS40R is an excellent choice for builders or DIYers working with 40mm round axles and needing a reliable mounting base for drum brakes. Its square design simplifies install while supporting both mechanical and electric brake setups.

Recommended for:

• Light-duty trailers and box trailers
• Campers and utility trailers needing brake upgrades
• Custom trailer builds or replacement brake projects

Installation Tips:

• Check your brake backing plate is compatible with square mounts
• Align the plate carefully before bolting or welding to axle
• Secure all fasteners with proper torque for vibration resistance

Need help selecting the correct backing plate or brake system? Contact our team and we’ll match the right parts to your axle and setup.