Trojan Hub Kit 5x4.5 Bolt On Rotor 2000kg Non Braked Duratorque NZ Trailer Axles

Hub Kit 5x41/2x1/2 Bolt on Rotor 2000kg is a rugged, non-braked hub pair engineered to fit Duratorque and beam axles, with broad compatibility for NZ-manufactured trailer axles. Built to handle demanding loads, this kit forms a dependable base for trailers that may be upgraded to braking in the future, without sacrificing reliability today.

Why this hub kit stands out

• 2000 kg GVM rating per pair (based on a single axle and two hubs), giving you clear load capacity for typical trailer applications while staying within safe, tested limits.
• Non-braked by design, with a future-ready upgrade path. You can bolt on a disc brake system later using compatible components when you’re ready to enhance stopping power.
• Heavy-duty bearings built to endure rugged road conditions and long service life, reducing maintenance surprises on the road.
• Flexible stud patterns to fit a wide range of rims and tyres:
  • 5 studs, PCD 4 1/2 inch (most common)
  • 5 studs, PCD 120 mm
  • 6 studs, PCD 5 1/2 inch
• Bolt-on rotor compatibility allows straightforward upgrades to a braking system when desired, using the upgrade kit options below.
• Not included: stub axle; this kit is designed to work with compatible axles and discs when you add braking components.
• Spare parts availability ensures you can source replaceable components as needed, minimizing downtime.
• Delivery timeframe– ships within 4–7 days, so you’re not left waiting when you’re planning a trailer build or upgrade.

Model variations and dimensions

The hub dimensions are designed to match a range of axle configurations, with the following typical specs for the 2000 kg variants:

• : Outer Bore 45 mm, Inner Bore 65 mm, Flange Thickness 17 mm, Flange Diameter 220 mm, Overall Width 90 mm
• : Outer Bore 50 mm, Inner Bore 65 mm, Flange Thickness 17 mm, Flange Diameter 220 mm, Overall Width 90 mm
• : Outer Bore 50 mm, Inner Bore 65 mm, Flange Thickness 13 mm, Flange Diameter 190 mm, Overall Width 110 mm

These figures define the physical fit of the hub against your rotor, drum, or wheel assembly and help determine compatibility with your specific wheel and brake setup.

Upgrade path: braking components, now or later

This hub kit is designed with future braking in mind. Should you choose to retrofit brakes, the following bolt-on components are compatible options:

• TPT3112 Cast iron rotor kit
• TPT3113 Stainless steel rotor kit
• TPT1098 Cast iron caliper kit
• TPT1298 Stainless steel caliper kit

Upgrading unlocks improved stopping power while preserving the same hub footprint and stud pattern, making it ideal for evolving trailer requirements—whether you’re transitioning from light-duty hauling to heavier loads or preparing for stricter road regulations.

Who should consider this hub kit

This solution is well-suited for trailer builders, workshop DIYers, fleet operators, and anyone upgrading existing trailers that use Duratorque or beam axles, or NZ-manufactured axles. If you want a reliable, upgrade-ready hub system that accommodates common wheel patterns and provides a straightforward path to brakes, this is your practical starting point.

Practical considerations and tips

• When planning braking upgrades, ensure your chosen rotor and caliper kit matches the hub’s stud pattern (5x4 1/2", 5x120 mm, or 6x5 1/2") and bore dimensions.
• Verify your wheel size and mounting flange to confirm compatibility with the Flange Diameter and Overall Width specs for your model (Early, Current, or New).
• Keep stub axles and any additional axle components on hand if you’re assembling a complete axle kit; this hub kit assumes compatibility with your existing axle configuration.
• If you’re upgrading brakes later, plan for a compatible disc (rotor) and caliper kit, and check if you’ll need adaptors or mounting hardware specified by the brake components.

With the Hub Kit 5x41/2x1/2 Bolt on Rotor 2000kg, you’re choosing a purpose-built, upgrade-friendly hub solution designed to meet real-world trailer needs—balancing reliable non-braked performance today with a clear upgrade path for safer, more capable braking in the future.