RETRUE Universal Trailer Hitch Coupler Lock — Fits 1-7/8", 2" & 2-5/16" • Heavy-Duty A36 Steel, Rustproof Blue

If you tow trailers, campers, or utility trailers, protecting the hitch coupling is one of the simplest ways to deter theft. The RETRUE Universal Trailer Hitch Coupler Lock combines a reinforced U-shaped steel shackle, an aluminum body, and an upgraded lock cylinder to deliver a secure, weather-resistant barrier that fits the three most common ball-coupler sizes. It’s built to be durable on the road while remaining easy to install without tools.

Will this lock fit my trailer’s coupler size?

Yes — the RETRUE lock is designed for compatibility with the standard coupler sizes used across most trailers. An internal adjustable mechanism gives multiple locking positions so one lock covers several ball diameters.

• Adjustable through 11 locking positions for a precise fit.
• Compatible with 1-7/8", 2" and 2-5/16" couplers.
• One unit replaces the need for multiple single-size locks.

How rugged is the construction against cutting or prying?

This coupler lock uses thicker, wider A36-grade steel for the U-shaped shackle and a reinforced body to resist common theft methods. The combination of materials and heavier gauge components raises the time and tools required to defeat the lock.

• Wider, thicker U-shaped steel pipe for improved shear resistance.
• Aluminum lock body paired with high-strength A36 steel shackle.
• QC-certified build to ensure consistent strength and fit.

How does the upgraded lock cylinder improve security and convenience?

The lock cylinder is engineered with a more complex internal mechanism and thicker keys to reduce the chance of picking and to increase key longevity. Keys are reinforced so they resist bending during frequent use.

• Enhanced lock mechanism increases pick resistance.
• Thicker, durable keys withstand repeated insertion and turning.
• Simple key operation keeps installation and removal quick.

Can this lock handle weather and long-term outdoor exposure?

Yes — the RETRUE coupler lock is rustproof and weatherproof for regular outdoor use. Finishes and materials were chosen to resist corrosion and maintain function through seasonal changes.

• Rustproof coating on metal surfaces to prevent corrosion.
• Weather-resistant components for reliable outdoor performance.
• Designed for long-term use with routine maintenance.

Who is this for: The RETRUE Universal Trailer Hitch Coupler Lock is a practical choice for trailer owners, RV enthusiasts, small-business fleet operators, and anyone who parks or stores trailers in public or semi-public locations. It’s especially useful if you want one robust lock that fits multiple coupler sizes, offers improved resistance to cutting and picking, and stands up to outdoor conditions. For added peace of mind, RETRUE backs the product with a 120-day warranty and responsive 24/7 customer support for questions or replacement needs.