Hub Kit 4x41/2x7/16 Disc Braked 1500kg

The Hub Kit 4x41/2x7/16 Disc Braked 1500kg is built to elevate trailer braking performance while matching the most common NZ axle configurations. Designed to fit our Duratorque and beam axles, this kit also suits a wide range of NZ-manufactured trailer axles, giving you dependable stopping power when you need it most. With a robust 1500 kg GVM rating per axle (based on a pair of hubs), you gain peace of mind for demanding loads and longer trips.

Why this hub kit stands out

• Direct compatibility with Duratorque and beam axles, plus broad compatibility with NZ-made trailer axles—simplifying replacement projects and upgrades.
• High-load performance rated at 1500 kg GVM per axle, ensuring reliable braking under heavy loads and extended use.
• Flexible rotor options available as a full cast disc or a bolt-on disc, in either cast iron or stainless steel, letting you tailor braking performance and corrosion resistance to your environment.
• Common study patterns the kit supports a wide range of wheel stud patterns, with the most common being 5 studs at a 4.5" PCD (114.3 mm), ensuring compatibility with many popular rims and tyres.
• Precise hub geometry designed with consistent bore sizes and flange dimensions to ensure a secure, balanced fit on your trailer’s axle system.

Technical snapshots

• Disc Braked
• 45 mm
• Inner bore: 59 mm
• Flange thickness: 15 mm (Current Model) / 15 mm (Early Model)
• Flange diameter: 180 mm
• Boss length: 27 mm (Early Model) / 34 mm (Current Model) / 38 mm (Spigot Type, Current Model)
• Rotor diameter: 225 mm (standard)

Specific variants within the 1500 kg range include:

• Early Model — Outer bore 45 mm, Inner bore 59 mm, Flange thickness 15 mm, Flange diameter 180 mm, Boss length 27 mm, Rotor diameter 225 mm.
• Current Model — Outer bore 45 mm, Inner bore 59 mm, Flange thickness 15 mm, Flange diameter 180 mm, Boss length 34 mm, Rotor diameter 225 mm.
• Spigot Type (Current Model) — Outer bore 45 mm, Inner bore 59 mm, Flange thickness 12 mm, Flange diameter 155 mm, Boss length 38 mm, Rotor diameter 225 mm (or 260 mm in certain configurations), with compatible PCD options.

Rotor sets and spare parts

Rotor options are available as complete sets to match your chosen hub configuration. Rotor sets include:

• TPT3110 Cast iron rotor set
• TPT3111 Stainless steel rotor set

What’s included and practical notes

• Weight: approximately 15 kg per kit, making handling and installation manageable in typical workshop settings.
• Note: a range of spare parts is available to support long-term reliability and easy maintenance.
• Shipping: orders typically ship within 4–7 days from order to dispatch, helping you plan your trailer upgrades with confidence.

Who benefits from this hub kit

This hub kit is an excellent match for trailer builders, agricultural equipment operators, and existing trailer owners upgrading to more reliable disc braking. If you’re using Duratorque or beam axles, or if your trailer uses NZ-manufactured axles, this kit simplifies installation while delivering strong, consistent braking performance across a broad load range.

In practical terms, this kit helps you achieve smoother stops, better heat dissipation under heavy use, and improved longevity of braking components. It’s a thoughtful, purpose-built solution for trailers that see regular towing, demanding loads, or long hauls, all while keeping compatibility and maintenance straightforward.