Trojan NZ Trailer Coupling 2500KG Duofit Dual Ball 1 7 8 Inch 50mm For Heavy Duty Towing

The NZ Trailer Coupling - 2500KG Duofit from Trojan is built for demanding towing applications across New Zealand. This heavy‑duty coupling delivers strength, security, and unmatched versatility in a single, ready‑to‑use solution. Engineered to suit both 1 7/8 inch and 50mm tow balls, it eliminates the need for multiple couplings in mixed fleets, shared trailers, or busy workshops where quick, reliable changes matter. Switching between ball sizes is straightforward—lift and rotate the handle 180 degrees to switch ball compatibility.

Designed for real-world conditions, the Duofit 2500KG is crafted from robust SG cast iron and finished with a durable zinc‑plated coating. This combination provides outstanding wear and corrosion resistance, making it a dependable choice for marine environments, rural worksites, and commercial towing tasks alike. The result is a trailer coupling you can trust in challenging New Zealand weather and road conditions.

Key features that translate into practical benefits on the road and at the job site:

• 2500 kg towing capacity – built for mid‑to‑heavy duty trailers, including boats, box trailers, and equipment trailers.
• Duofit dual‑ball compatibility – one coupling fits both 1 7/8" and 50mm tow balls, simplifying inventory and maintenance.
• 180° handle rotation for quick size change – fast, tool‑free conversion between tow ball sizes, streamlining operations in busy yards.
• SG cast iron construction with a zinc‑plated finish – rugged, long‑lasting build designed to withstand the NZ environment.
• Integrated anti‑rattle screw – minimizes movement and reduces road noise during transport for a smoother tow experience. (feature aligns with high‑duty Duofit design)
• Security padlock provision – adds an extra layer of trailer security when you park or leave gear unattended.
• NZS 5232:1993 compliance – meets the key New Zealand standard for ball‑and‑socket trailer couplings, giving you confidence on every trip.

Why this Duofit coupling saves time and hassles

Traditional setups often require carrying and switching between separate 1 7/8" and 50mm couplings. The 2500KG Duofit combines both sizes in one robust unit, reducing clutter, increasing uptime, and simplifying maintenance for workshops and fleet operators. Its corrosion‑resistant build ensures it remains reliable in marine and rural towing scenarios, while its compatibility and compliance deliver peace of mind on every tow.

Ideal applications

The Duofit 2500KG is a versatile choice for a wide range of trailers and tasks:

• Boat trailers and other marine equipment that require resilience against salt spray and humidity
• Box trailers, utility trailers, and equipment trailers used in workshop environments
• Shared trailers in fleets where different vehicles or operators demand quick ball size changes

Built by Trojan, a trusted name in towing hardware, this coupling brings technical sophistication and practical reliability to everyday towing. If you need a single, compliant, adaptable solution that performs across a broad spectrum of NZ towing scenarios, the NZ Trailer Coupling - 2500KG Duofit delivers consistent, dependable results.