Trailparts Torsion Suspension – Semi-Off Road Models

Overview
All Harvok all-terrain caravans come equipped with the Trailparts Torsion Suspension system and Unihub sealed bearing hubs — a modern, robust alternative to traditional leaf spring setups. This suspension system is designed specifically for off-road performance and long-term reliability with minimal maintenance.


Key Specifications

  • Axle Rating: 2.7T per axle
  • Brake Type: 12-inch electric brakes
  • Hub System: Trailparts Unihub
  • Configuration: Torsion-style rubber suspension
  • Assembly: Supplied as a modular pre-assembled unit for consistency and reliability

Key Features

🔧 Torsion Suspension

Unlike traditional spring suspensions, the torsion suspension uses rubber cords inside a steel housing to provide smooth, independent wheel movement. This:

  • Reduces road shock
  • Improves towing comfort
  • Enhances off-road control and stability

🛠️ Unihub – Sealed Bearing Technology

Each suspension arm integrates a Unihub wheel-end:

  • Permanent Sealed – no bearing repacking required
  • Pre-greased and factory-assembled
  • Protected with marine-grade triple-lip seals
  • Includes a threaded dust cap with O-ring for secondary sealing
  • Supports radial, axial, and cornering forces with ease
  • Ideal for tandem axle and heavy-duty caravan builds

Why It Matters to You

  • Less Maintenance: No need to regularly repack bearings
  • Better Off-Road Handling: The torsion design soaks up trail bumps
  • Improved Durability: Fully enclosed hub system reduces wear from water, dust, and vibration
  • Longer Service Life: Designed to handle Australian terrain with minimal upkeep

Installation Notes

  • Harvok uses the modular version of Trailparts suspension.
    This means the entire suspension and hub system arrives pre-assembled as a single unit, improving build quality and consistency.
  • Bracket spacing and hub face distance are engineered specifically for each model, ensuring ideal weight distribution and clearance.

📥 Download Suspension Manual:
Trailparts Suspension with Unihub – System Overview (PDF)