RETRUE Universal Trailer Hitch Coupler Lock, Grey & Silver — Heavy-Duty Steel, Adjustable Fit

Whether you park a utility trailer, camper, or boat trailer, the right coupler lock stops opportunistic theft and gives you peace of mind. The RETRUE lock combines an adjustable fit with reinforced materials and a refined cylinder to resist cutting, prying, and corrosion. Built to sit over the tow ball, it prevents a hitch from being attached and towed away while remaining simple to use and transport.

How does this lock fit different trailer couplers?

The RETRUE Universal Trailer Hitch Coupler Lock uses an adjustable U-shaped shank and 11 locking positions so it accommodates standard tow ball sizes. You set the shank to the correct position for 1-7/8", 2" or 2-5/16" couplers and lock it in place, eliminating the need for multiple locks or adapters.

• Adjustable design with 11 indexed positions for precise fit
• Works with 1-7/8", 2", and 2-5/16" tow balls
• Single lock fits a range of trailers to simplify storage and use

How tough is the construction against theft and weather?

RETRUE pairs an aluminum lock body with high-strength A36 steel for the shank and internal components, increasing resistance to cutting and shear attempts while keeping weight manageable. The U-shaped pipe and body are enlarged and thickened to resist prying and blunt force, and the materials are treated to resist rust and corrosion for year-round outdoor use.

• Wider, thicker U-shaped steel pipe for improved cut resistance
• Aluminum body combined with A36 steel for strength and durability
• Rustproof and weatherproof construction for long outdoor life

What makes the lock cylinder and keys more secure?

The lock uses an upgraded cylinder mechanism with a more complex internal profile that increases difficulty for picking or forcing. Keys are manufactured thicker for durability, helping them resist bending or wear over repeated use, and the overall assembly is quality-checked to meet performance expectations.

• Complex cylinder design to deter picking and tampering
• Thicker, reinforced keys for improved longevity
• Quality control inspection to ensure reliable operation

How do I maintain and use this coupler lock effectively?

Using the RETRUE coupler lock is straightforward: select the proper indexed position over the ball, slide the shank into place, and turn the key to lock. For maintenance, keep the lock clean and apply light lubricant to the cylinder occasionally; store the lock indoors when not in use to prolong finish life.

• Set the correct position, place over tow ball, then lock with key
• Wipe off dirt and lubricate the cylinder periodically
• Store inside when possible to extend the product’s appearance and function

Who is this for: RETRUE's Universal Trailer Hitch Coupler Lock is for trailer owners who want a single, durable security solution for multiple tow ball sizes. It suits recreational users, contractors, landscapers, and anyone who trailers equipment or leisure vehicles and needs a weather-resistant, easy-to-use deterrent. Backed by a 120-day warranty and 24/7 customer support, it’s intended for buyers seeking dependable theft prevention without complicated installation or frequent replacement.