Description

Trusted by trailer manufacturers and workshop engineers across New Zealand.

This 1,250 kg Single Axle Trailer Spring Set is a complete trailer suspension kit designed to deliver reliable performance, load stability, and smoother towing. With a load capacity of up to 1,250 kg, this 5-leaf trailer spring set features progressive spring compression for improved comfort, a longer second leaf for enhanced durability, and anti-rattle leaves to minimise noise and movement.

This set includes not only the springs but also essential mounting components, making it a convenient choice for both new builds and trailer upgrades.

Key Features

  • Longer second leaf provides added strength and durability
  • Anti-rattle leaves reduce wear and noise
  • Zinctech coating on springs for corrosion resistance
  • Trailer springs come with pre-installed nylon bushes
  • Anti-rattle slippers fit snugly around the springs to reduce movement and wear.

Applications

  • General utility trailers
  • Tool, equipment, and service trailers
  • Agricultural and rural trailers
  • Trade and commercial use
  • Suitable for both road and light off-road towing
  • Ideal for single axle trailer suspension replacement or new installations.

Specifications

  • Load Rating: 1,250 kg (per spring pair)
  • Trailer Spring Type: Eye-to-slipper
  • Number of Leaves: 5 per spring
  • Leaf Width: 50 mm
  • Leaf Thickness: 6 mm
  • Spring finish: Zinctech anti-corrosion coating

Kit Inclusions

  • 60003 Springs Only 1,250 kg Zinctech 5 Leaf (1 pair)
  • 60014 Spring Hanger Bolt M16 x 95 mm (1 pair)
  • 60015 Spring Hanger Nut M16 Nyloc (1 pair)
  • 60013 Spring Hanger 16 mm Eye, suits 50 mm Spring (1 pair)
  • 60012 Spring Slipper, suits 50 mm Spring (1 pair)

Frequently Asked Questions

What is progressive spring compression?

Unlike linear springs that compress at a constant rate, a progressive spring features leaves designed to increase stiffness as they compress. This design allows the trailer spring to provide a smoother ride under light loads while offering greater support under heavier loads. As a result, it delivers better control across varying conditions and helps prevent excessive sag. This dual-rate behaviour allows your trailer to handle a wider range of load conditions without sacrificing control, ride quality, or safety. It also helps reduce wear on other suspension components and minimises the risk of bottoming out under heavy loads.

What is Zinctech coating?

Zinctech is a specialised corrosion-resistant zinc coating applied to steel components. It offers strong protection against rust, extending the life of springs and hardware in outdoor environments.

Why is the second leaf longer?

A longer second leaf supports the main leaf, reducing stress on the eye area and extending the trailer spring's service life.

What are anti-rattle leaves?

Anti-rattle leaves are designed to minimise movement and noise in a leaf spring suspension system. At the slipper end, the spring leaves are spread out (or "fanned") rather than stacked tightly together. This creates a snug fit inside the slipper, which helps reduce rattling, wear, and vibration during towing.

Can I use this for a tandem axle trailer?

Yes, by purchasing two kits you can support up to 2,500 kg for tandem axle applications.

Can I get axles with this kit?

Yes. You can add ready-made axles or custom fabricated axles to your order. To get axles made to your specifications, please visit: Axle Fabrication

Specifications

Length: 106mm eye to end
Brand: Treadway
Material: Steel
Load Rating: 1250kg
Type/Finish: Zinctech
Width: 50mm

Questions?

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