RETRUE Trailer Hitch Lock Set — Keyed-Alike Coupler & Receiver Locks, Red, Adjustable Weatherproof

RETRUE Keyed Alike Trailer Hitch Lock Set is a three-piece, keyed-alike anti-theft kit that secures trailer couplers and hitch receivers with heavy-duty, weatherproof construction.

If you tow trailers, campers, or equipment, protecting the hitch and coupler is essential to prevent theft and accidental detachment. This red RETRUE kit includes an adjustable coupler lock, two receiver pins of different diameters, and a small tongue lock pin — all keyed alike so one key operates every component. Built from aluminum and high-strength A36 steel with upgraded lock cylinders, the set balances corrosion resistance with cut-and-shear strength for reliable everyday use.

How does the adjustable coupler lock fit different trailer couplers?

The RETRUE coupler lock is engineered to fit the most common ball-coupler sizes by offering multiple locking positions and an adjustable profile. It clamps over the coupler latch, preventing the ball from engaging and stopping unauthorized hookups.

• 11 locking positions for precise fit
• Compatible with 1-7/8", 2", and 2-5/16" couplers
• Adjustable span for latch-type couplers up to 3/4" using the included tongue pin

What receiver lock sizes are included and when should I use each?

The set contains two hitch receiver locks sized to cover standard receiver pin diameters and mounting needs. Use the larger-diameter pin for heavy-duty trailers and the smaller-diameter pin for lighter towing setups or when hole spacing limits the effective pin length.

• 5/8" diameter pin with 2.8" effective length for heavier applications
• 1/2" diameter pin with 2.2" effective length for lighter loads or tighter spacing
• Both pins fit common 2" receiver hitches and lock securely with the same key

How secure and weather-resistant is the RETRUE lock set?

This kit combines a rustproof aluminum body with A36 steel internal components to resist cutting and shearing while minimizing corrosion. RETRUE upgraded the lock cylinder and key geometry to make picking or forced entry significantly more difficult.

• Aluminum exterior for rust resistance and lower weight
• A36 steel internal components for cut and shear resistance
• Upgraded, more complex lock cylinder and thicker keys for improved tamper resistance

What comes in the box and what kind of warranty or support is offered?

The package includes the adjustable coupler lock, two receiver locks (different diameters), a tongue lock pin for latch-type couplers, and four keyed-alike keys so one key operates every lock. RETRUE backs the product with a quality assurance policy and responsive customer care.

• Three locks keyed-alike plus four matching keys for convenience
• Quality control testing completed before shipment
• 120-day warranty and 24/7 support via the seller's contact options

Who is this for: The RETRUE Keyed Alike Trailer Hitch Lock Set is aimed at trailer owners, recreational vehicle users, landscapers, and contractors who want a practical, single-key solution to secure couplers and hitch receivers. It’s a fit for anyone looking for a durable, weather-resistant locking kit that covers common coupler sizes and standard 2" hitch receivers without the complexity of matching multiple keys.