235mm Vented Disc Unihub 1800kg HSS Patriot 5x4 1/2" 55mm St

Item code: HU4422H55

$1,601.81 ea excl. GST

STP File

Trailparts™ hub design with external seals and unitary back-to-back duplex bearings with integrated seals. The shorter and thicker shafts with an engineering-led approach means safety margins with Unihub are massively increased. Trailparts™ 235mm Patriot hydraulic brake sets are designed as a high performance braking solution, and are suited for use on trailers that are typically run with heavy loads or when braking is an important factor.

Other features of these brakes are;

  • Dacromet coating on hubs, rotors and calipers for corrosion resistance
  • Dual stainless piston Patriot High Performance calipers
  • 235mm diameter 26mm vented rotors
  • Marine grade Triple lip waterproof seals
  • Sealed back-to-back duplex bearing with integrated seals
  • Threaded dust cap with O-ring seal
  • Is easily able to be upgraded to have a park brake fitted
  • 55mm Stub end

Axle Requirements

To ensure Unihub is used correctly, all hub stub sets must be configured on a pre-assembled axle with a 36 month warranty. You can still order this kit online and our customer service team will get in touch regarding your axle specifications. Alternatively you can use our online Axle Builder to request a quote for your complete Unihub axle.

Stud Pattern 5 x 4½"
Stud/Nut Size ½"
Rating 1800kg
Calipers (pr) B3600 (Patriot)
Hub kit only (pr) HU4322H (Unihub)
Rotor only (ea) H4215
Stud Part number H4982
Nut Part number H4996 (10 supplied in kit)
Stub Part number AU913F


Patriot - High Performance Calipers image

Patriot - High Performance Calipers

The Trailparts Patriot series define what a trailer disc brake should be. They give significant specification increases in every desirable area - brake pad size; twin pot piston; caliper frame rigidity; ventilated rotors and easy servicing features. See more
Handbrake kit available.

Unihub image


Unihub's entire wheel end (wheel, hub, stub axle and bearing) is optimized to ensure that axial and radial loads are always carried exactly where you want it to be - directly through the bearing centre, on the meaty part of the stub axle). These hubs feature long life, sealed unitary bearing and our new threaded, O-ring sealed dust cap. See more