Coupling Duofit HTC No Back Frame - High Load Capacity

Trojan’s Coupling Duofit HTC No Back Frame is a purpose-built towing connection designed for New Zealand trailers and light industrial setups. This no-back-frame variant delivers a clean, weight-conscious solution that never compromises strength or safety, with a design tuned for quick, reliable installation on common NZ bolt patterns.

Key benefits that matter in the field

• Lightweight, back-frame-free design: reduces overall weight and simplifies installation, while maintaining rugged towing performance.
• High-load reliability: rated to a practical 2500 kg maximum, making it suitable for standard trailer and accessory applications.
• NZ common bolt pattern: mounted across bolt centers with a footprint aligned to popular regional configurations, minimizing custom fabrication.
• Simple, secure mounting: requires four 12 mm high-tensile bolts, delivering solid torque performance when tightened to specification.
• Vibration-resistant connection: the no-back-frame design maintains a secure tow under varyingroad conditions and loads.
• Compliance and safety: conforms to Australian Standard AS4177.3 (1994), supporting regulatory alignment for cross-border use and fleet operations.

Ideal applications

• Retrofits on existing trailers that rely on the NZ bolt pattern, where a back frame is unnecessary or adds complexity.
• New trailer builds that prioritize straightforward mounting with standard 12 mm high-tensile bolts and no-back-frame configurations.
• Maintenance and inspections in workshops where quick access to the coupling area improves uptime and service cycles.

Installation, care and maintenance

For reliable performance, mount the coupling using four 12 mm high-tensile bolts on a clean, flat surface. Ensure bolt centers align with the NZ mounting pattern and torque bolts according to manufacturer guidelines (typical ranges for M12 high-tensile bolts, depending on grade). Periodically inspect for wear, corrosion, or loosening, and replace hardware promptly to maintain safe towing operation. Keeping the no-back-frame area free of debris supports long-term reliability in everyday use.

Why this stands out in the field

Where many couplings rely on a back frame for added strength, the Duofit HTC No Back Frame delivers a balanced blend of rugged durability and streamlined installation. The no-back-frame approach lowers weight, simplifies installation, and reduces maintenance, all while delivering a solid 2500 kg rating and AS4177.3 compliance. It’s a practical, field-ready solution for NZ-based fleets and cross-border equipment where safety, efficiency, and regulatory alignment are paramount.

Brand you can trust

From Trojan, a long-standing name in towing solutions, the Duofit line emphasizes practical, robust couplings built for real-world conditions. The No Back Frame variant embodies Trojan’s commitment to dependable, regulation-ready towing connections that installers can trust and operators can rely on day after day.