Built for demanding trailer work in New Zealand, the Hub and Stub Kits 1500kg Disc/B 4x4 1/4x7/16 are engineered to deliver dependable braking performance and long service life across a range of common axle configurations. Designed to fit Trojan Duratorque and beam axles, these kits are also compatible with many NZ-manufactured trailer axles, making them a versatile, ready-to-fit solution for new builds and replacements alike.

Why these hub and stub kits stand out

• High load capacity per axle: 1500 kg GVM per axle when using a pair of hubs, giving you confident braking support for heavier trailers.
• Broad compatibility: Specifically designed for Duratorque and beam axles, with broad compatibility to suit most NZ trailer axles and a wide range of wheel stud patterns.
• Variety of disc configurations: Choose from full cast discs or bolt-on discs in cast iron or stainless steel to match your corrosion resistance needs and maintenance preferences.
• Ready-made stub solution: Includes a pair of 38 mm round stub axles with a built-in caliper mount to simplify installation and alignment.
• Calipers sold separately: The system is designed to work with your preferred braking components, allowing you to select calipers that suit your braking feel and pad material choices.

What’s included and key specs

• Pack size and weight: Pack Weight 20 kg per kit, with components designed for straightforward mounting and serviceability.
• GVM and application: 1500 kg per axle (when using a pair of hubs), ideal for a wide range of heavy trailers in NZ conditions.
• Engineered to fit: Trojan Duratorque and beam axles (and broadly compatible with most NZ trailer axles).
• Spare parts availability: A range of spare parts is available to support ongoing maintenance and servicing of these hubs and discs.
• Delivery: Ships from supplier with typical dispatch within 4–7 days.

Compatibility and configuration overview

• configurations cover common 4x4 and 5-lug patterns, with multiple PCDs to match your wheel and rim selection. This includes options suitable for traditional 4 1/4" and 4 1/2" stud patterns as well as standard 5-lug arrangements.
• Bolt-on discs in cast iron or stainless steel provide durable, serviceable braking surfaces that are easy to replace or upgrade over time. These bolt-on options are designed to accommodate a range of 5-lug patterns and PCDs commonly used on NZ trailers.
• Stud patterns span common configurations to help ensure you can pair these hubs with a wide array of rims and tyres. The included options cover 4-stud and 5-stud arrangements with varying stud widths to match your wheel choices.
• Available patterns include a mix of 108.6 mm, 114.3 mm, 63.449 mm, 67.183 mm, and 70.535 mm PCD variants, with corresponding stud widths (mostly 7/16 in or 1/2 in) to suit your rims.

Who this product is ideal for

• Trailer builders and owners upgrading to disc brake systems for improved stopping power and heat management on heavier loads.
• Boat trailers, caravans, and utility trailers used in NZ environments where corrosion resistance and robust hub assemblies are important.
• Repairers seeking a flexible hub/stub kit that can accommodate multiple wheel patterns without buying multiple distinct kits.

Practical tips and considerations

• Before installation, verify your wheel stud pattern and PCD to ensure a perfect fit with the chosen integral or bolt-on disc option.
• Because calipers are sold separately, pair these hubs with calipers that match your preferred pad material and braking response (e.g., heat tolerance for longer descents or frequent use).
• If you’re replacing worn hubs, check the alignment of the 38 mm stub axles and ensure the caliper mounting is compatible with your braking system.
• Consider stainless steel bolt-on discs if your trailer operates in salty or coastal environments where corrosion resistance matters most.
• Keep a spare parts plan in mind—there are dedicated spare components available for these hub kits to simplify maintenance down the line.