Hub Kit 5X41/2X1/2 CI Disc Braked 1500kg is a robust, purpose-built upgrade for trailer systems that need reliable stopping power and long-lasting durability. Designed to fit Duratorque and beam axles, this hub kit is also compatible with most NZ manufactured trailer axles, making it a versatile choice for installers and trailer owners alike.

Why this hub kit stands out

• High-load capability rated at 1500 kg GVM per axle (based on a single axle with two hubs), ideal for mid-to-heavy duty towing and demanding applications.
• Broad compatibility supports a wide range of wheel stud patterns, with the most common being 5-stud configurations, ensuring you can pair with standard rims and tyres already in rotation.
• Flexible rotor options available as a full cast disc or a fitted bolt-on disc, in either cast iron or stainless steel, so you can choose the balance of cost, durability, and corrosion resistance that suits your needs.
• Precise, proven dimensions are built to fit closely with Duratorque and beam axles, including outer bore 45 mm, inner bore 59 mm, flange thickness 15 mm, and flange diameter 180 mm. Boss length varies by model (27–34 mm) to optimize rotor seating and brake performance.
• Consistent rotor diameter all configurations feature a 225 mm rotor diameter, delivering reliable braking performance across the range. Spigot-type variants offer additional rotor choices (225 mm or 260 mm) to suit specific hub setups.

Specifications at a glance

• Hub Type: Disc Braked
• Outer Bore: 45 mm
• Inner Bore: 59 mm
• Flange Thickness: 15 mm
• Flange Diameter: 180 mm
• Boss Length: 27–34–38 mm (depending on model)
• Rotor Diameter: 225 mm (standard); 225 mm or 260 mm PCD for spigot-type variants
• GVM Rating: 1500 kg per axle
• Pack Weight: 14 kg

Part numbers and rotor options

The catalogue covers a range of integral (stud) configurations and bolt-on discs in cast iron or stainless steel to match common NZ trailer patterns. Examples include:

• T035105 Integral Blank
• T035115 Integral 4 4 1/4 inch, 7/16 inch stud, 108.0 mm
• T035120 Integral 4 4 1/2 inch, 7/16 inch stud, 114.3 mm
• T035125 Integral 5 4 1/4 inch, 7/16 inch stud, 63.449 mm
• T035135 Integral 5 4 1/2 inch, 1/2 inch stud, 67.183 mm
• T035140 Integral 5 120 mm, 7/16 inch stud, 70.535 mm
• T036125 Cast Iron bolt-on 5, 4 1/4 inch, 7/16 inch stud, 63.449 mm
• T036135 Cast Iron bolt-on 5, 4 1/2 inch, 1/2 inch stud, 67.183 mm
• T036140 Cast Iron bolt-on 5, 120 mm, 7/16 inch stud, 70.535 mm
• T036325 Stainless steel bolt-on 5, 4 1/4 inch, 7/16 inch stud, 63.449 mm
• T036335 Stainless steel bolt-on 5, 4 1/2 inch, 1/2 inch stud, 67.183 mm
• T036340 Stainless steel bolt-on 5, 120 mm, 7/16 inch stud, 63.449 mm

Rotor sets and spare parts

Rotor sets are available to match these hub configurations. Current options include:

• TPT3110 Cast iron
• TPT3111 Stainless steel

There is a range of spare parts available for this product, and all items are shipped from suppliers with typical dispatch within 4–7 days.

Who is this ideal for?

This hub kit is perfect for trailer owners upgrading to disc braking, fleet operators seeking consistent, low-maintenance stopping power, and installers working on NZ-made trailers that use Duratorque or beam axles. If you need a reliable 1500 kg-rated disc-braked hub with flexible stud patterns and durable material options, this kit provides a thoughtfully engineered solution with real-world versatility.

Practical tips and insights

• Confirm your axle type (Duratorque vs. beam) and your preferred stud pattern before ordering to ensure the exact integral or bolt-on rotor option is selected.
• Consider stainless steel bolt-on discs in coastal or high-humidity environments for enhanced corrosion resistance without sacrificing braking performance.
• Leverage the available rotor sets (TPT3110/TPT3111) to keep maintenance cycles predictable and parts readily on hand.
• Factor the 14 kg pack weight into handling and mounting considerations during installation to avoid injury or mishaps.