Hub and Stub Kits 1500kg Disc/B 5x4 1/4x7/16

Built for demanding trailer work, the Hub and Stub Kits 1500kg Disc/B 5x4 1/4x7/16 provide robust braking performance for NZ roads. Designed to fit Trojan Duratorque and beam axles, these braked hub kits are also compatible with a wide range of NZ-made trailer axles, making it a versatile choice for refurbishments or new builds.

Key advantages that set this kit apart

• High capacity — 1500 kg GVM per axle (based on a pair of hubs), giving you dependable stopping power on mid-size trailers.
• Disc brake options — choose between a full cast disc or a bolt-on disc, available in cast iron or stainless steel, for longevity and corrosion resistance tailored to your environment.
• Integrated hub design — each kit includes a pair of 38 mm round stub axles with a built-in caliper mount, simplifying alignment and installation.
• Broad wheel pattern compatibility — available across multiple stud patterns to accommodate the most common wheels, with 5-stud configurations around 4 1/4" (108.6 mm) and 4 1/2" (114.3 mm) PCD, as well as 5x120 mm variants and associated stud widths (7/16" or 1/2").
• Calipers sold separately — hub and stub assemblies are ready to install; select the compatible caliper to complete the braking system.
• Designed for NZ trailers — while optimized for Trojan Duratorque and beam axles, the kit’s range of patterns and discs makes it suitable for many NZ trailer axles.

What’s included and how it works

• What you get — a pair of braked hubs with stub axles and a choice of disc configurations (full cast or bolt-on, cast iron or stainless steel). The package weight is approximately 20 kg.
• Installation notes — the kit provides a caliper mounting option on the stubs, with calipers sold separately to match your chosen rotor type and pattern.
• Versatile rotor configurations — integral options (various patterns) and bolt-on disc configurations support a range of wheel stud patterns to fit the most common rims and tyres.

Who should consider this kit

Perfect for trailer builders, fleet maintenance teams, and DIYers upgrading to disc braking for improved control and cooler operation during heavy use. If you’re maintaining or upgrading a trailer that uses Duratorque or beam axles, this kit provides a reliable, compatible pathway to modern disc braking without overhauling your entire axle set.

Real-world use cases and practical tips

• Replacing worn drum hubs on a mid-weight trailer to gain immediate braking improvement and reduced fade on long descents.
• Upgrading NZ-built trailers to disc brakes for better heat dissipation in coastal environments where corrosion resistance matters (choose stainless options as needed).
• Matching the correct pattern: verify your current wheel pattern (5-stud) and select the corresponding PCD (e.g., ~108.6 mm, ~114.3 mm, or 120 mm) and stud width (7/16" or 1/2") for a seamless fit.
• Plan caliper selection in advance since calipers are sold separately; ensure compatibility with your disc type (cast iron vs stainless) and mounting layout.

Note: This product is shipped from the supplier with typical dispatch within 4–7 days. Spare parts are available, so maintenance or future repairs can be done without replacing the entire kit.