RETRUE Universal Trailer Coupler Hitch Lock — Black, Fits 1-7/8"/2"/2-5/16", Weatherproof & Adjustable

RETRUE Universal Trailer Coupler Hitch Lock is an adjustable, weatherproof locking system that secures 1-7/8", 2", and 2-5/16" couplers with a durable aluminum body, A36 steel components, and a visible protective finish.

Protecting a trailer from theft starts with a lock that fits, resists cutting and corrosion, and stays visible to deter tampering. This RETRUE coupler hitch lock combines an adjustable design with heavy-duty materials, a rubber-covered arm for scratch protection, and a bright, deterrent color option for easy identification. It ships with two thicker keys, a sealed cylinder boot to keep out moisture, and a waterproof cover and cap to extend service life in wet conditions.

How does this hitch lock adapt to different coupler sizes?

The RETRUE hitch lock includes an adjustable locking mechanism with 11 different positions so it clamps securely across common coupler diameters. You can quickly set it to the correct length for 1-7/8", 2", or 2-5/16" tow balls without additional tools.

• 11 locking positions let you fine-tune fit for snug clamping
• Works with standard 1-7/8", 2", and 2-5/16" couplers
• Two keys included for primary and backup use

What materials and protections prevent cutting and weather damage?

Key structural parts are A36 steel for cut and shear resistance, paired with an aluminum body for reduced weight and rust resistance. The lock features a rubber-covered arm and a switchable rubber cylinder boot to prevent corrosion, reduce metal-on-metal wear, and keep grit and moisture out of the mechanism.

• A36 steel internal components resist cutting and shearing attempts
• Aluminum body resists rust while keeping the lock lighter to handle
• Rubber arm covers and cylinder boot prevent scratches and block moisture

How does visibility and finish help deter theft and extend lifespan?

RETRUE upgraded the lock’s appearance with a bright, attention-getting finish that discourages opportunistic thieves while making the trailer easy to spot. The waterproof cover and cap further shield the lock from rain and road grime, reducing corrosion and sticking over repeated use.

• High-visibility finish discourages tampering and speeds visual checks
• Waterproof cover and cap prolong component life in harsh weather
• Flat, compact shape minimizes profile while protecting the coupler

What comes in the box and what customer protections are included?

The package contains the RETRUE universal hitch lock preassembled with two keys and a waterproof cover and cap for the cylinder. RETRUE backs the product with quality control standards and a responsive support channel plus a 120-day warranty for product issues.

• Lock preconfigured with adjustable positions and two thicker keys
• Waterproof cover and cap to guard the cylinder from water and dirt
• 120-day warranty and customer support available via "Ask a Question"

Who is this for? The RETRUE Universal Trailer Coupler Hitch Lock is designed for trailer owners, fleet managers, and anyone who frequently leaves trailers unattended. It’s a practical choice when you need a single, adjustable lock that covers common coupler sizes, resists cutting and weather, reduces wear to your coupler, and includes accessible customer support and warranty protection.