Axles & Suspension Spring Sets Tandem Axle Kits

Spring Set Tandem Axle 3500kg Zinctech Inc ubolts & plates to suit 65mm axle

NZ $1,158.23 excl GST
SKU: 62055
Sorry, the selected product is currently out of stock. Sorry, there are only 1000 of this item currently in stock. the selected product is not available.

Description

Designed to accommodate 65 mm axles, this trailer spring set is a robust suspension solution for tandem trailers with a gross vehicle mass (GVM) of up to 3,500 kg. The heavy-duty 8-leaf springs are Zinctech-coated to resist rust and corrosion, while the extended second leaf wraps around the spring eye for added strength and durability.

This spring set features a progressive compression profile for smoother ride control under changing loads, as well as an anti-rattle design that reduces vibration and wear. With anti-rattle slippers, pre-installed nylon bushes, and all required mounting hardware—including U-bolts and axle plates to suit 65 mm axles—this is a ready-to-install kit built for demanding towing jobs.

Key Features

  • 8-leaf Zinctech-coated springs with 50 mm wide, 6 mm thick leaves provide strong load support
  • Progressive spring compression balances comfort and support according to trailer’s load
  • Extended second leaf strengthens the spring eye area for long-term durability
  • Anti-rattle spring and slipper design helps reduce vibration and wear
  • Pre-installed nylon bushes for faster, cleaner installation
  • Easy-align hangers and anti-slip bolt lugs make rocker assembly simpler and more accurate
  • Includes all hardware for a complete fit-out

Applications

  • Heavy-duty tandem axle trailers up to 3,500 kg
  • Equipment and machinery transport trailers
  • Car hauliers and commercial box trailers
  • Agricultural, forestry, or livestock trailers
  • Marine or off-road trailers operating in harsh conditions
  • Builds requiring 65 mm axle compatibility

Specifications

  • Spring rating: 1,750 kg per pair (3,500 kg total for tandem setup)
  • Trailer spring type: Eye-to-slipper, 8-leaf, 50 mm wide, 6 mm thick
  • Spring finish: Zinctech protective coating
  • Axle compatibility: 65 mm square axle

Kit Inclusions

  • 60005 Springs Only 1,750 kg Zinctech 8 Leaf (2 pairs)
  • 60019 Galvanised U-Bolt 145L x 68W M12 suits 65 mm Box (8 pieces)
  • 60017 Galvanised Axle Plate to suit 65 mm Axle (4 pieces)
  • 60007 Tandem Rocker Arm Hanger (2 pieces)
  • 60006 Tandem Rocker Arm Eye/Slipper Type (2 pieces)
  • 60014 Spring Hanger Bolt M16 x 95 mm (4 pieces)
  • 60008 Tandem Rocker Arm Centre Bolt M20 x 195 mm (2 pieces)
  • 60009 Tandem Rocker Arm Centre Nut M20 Nyloc (2 pieces)
  • 60015 Spring Hanger Nut M16 Nyloc (4 pieces)
  • 60010 Tandem Rocker Arm Slipper Bolt M10 (2 pieces)
  • 60011 Tandem Rocker Arm Slipper Nut M10 Nyloc (2 pieces)
  • 60013 Spring Hanger 16 mm Eye, Suits 50 mm Spring (2 pieces)
  • 60012 Spring Slipper, Suits 50 mm Spring (2 pieces)

FAQs

Q: What is progressive spring compression?

A: 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.

Q: What is Zinctech coating?

A: 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.

Q: Why is the second leaf longer?

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

Q: What are anti-rattle leaves?

A: 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.

Q: 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: https://www.treadway.co.nz/Resources/Axle-Fabrication.html

Specifications

Brand: Treadway
Fixing: U-bolts (65mm)
Load Rating: 3500kg
Type/Finish: Zinctech
Width: 50mm

Questions?

In order to assist us in reducing spam, please type the characters you see:

You might also be interested in ...