ARK Square Brake Mounting Plate – Suits 40mm Square Axle for Electric & Mechanical Drum Brakes (SKU: MPS40S)

ARK MPS40S Square Brake Mounting Plate is purpose-built for 40mm square trailer axles and supports both mechanical and electric drum brake systems. This plate provides a secure and stable base for fitting brake backing plates, ensuring your trailer stops safely and reliably.

Made from heavy-duty steel and precision-machined, this mounting plate is designed to simplify your brake installation or upgrade process. It’s a direct fit for most common brake setups on light-duty trailers, campers, and general utility builds.

Key Features:

• Square mounting plate for 40mm square trailer axles
• Suits both electric and mechanical drum brakes
• Durable steel construction for long-lasting performance
• Easy bolt-on installation – pre-drilled and ready to go
• Perfect for small trailers, box trailers, and custom builds

Upgrade or repair your trailer’s brake system with confidence using this high-quality mounting plate engineered for Australian conditions.

FAQ

Q: What axle does this suit?

A: It is made for 40mm square trailer axles, which are common on small to medium trailers.

Q: Can I use this with both electric and mechanical brakes?

A: Yes, it is compatible with standard backing plates for both types of drum brakes.

Q: Is it ready to install or does it need modification?

A: It is pre-drilled and ready for installation—no cutting or welding required if matched correctly.

Q: Is it suitable for DIY installs?

A: Absolutely. It’s ideal for both workshop and DIY applications thanks to its simple, bolt-on design.

Evaluation & Recommendation

The ARK MPS40S is an essential part for trailers running 40mm square axles. It’s especially useful when setting up or restoring a brake system using mechanical or electric drum brakes. Pre-drilled and built tough, it offers dependable alignment and load resistance.

Recommended for:

• Box trailers and utility trailers with 40mm square axles
• Campers and small caravans
• Custom builds and brake system upgrades

Installation Tips:

• Ensure the plate is properly aligned before tightening bolts
• Use lock washers or thread locker for vibration resistance
• Check your brake plate matches the bolt pattern

If you’re unsure whether your axle is square or round, or need help matching a complete brake setup, reach out to our team—we’ll help you get it right the first time.