RETRUE Universal Trailer Coupler Lock – Heavy Duty Adjustable Tow Ball Lock for 1-7/8", 2" & 2-5/16" Couplers, Anti-Theft Steel Hitch Lock

Universal Adjustable Trailer Coupler Lock for Maximum Security

The RETRUE universal trailer coupler lock is engineered to protect your trailer from theft by securing the coupler latch and preventing unauthorized towing. Designed with 11 adjustable locking positions, this heavy duty trailer lock fits most standard trailer couplers.
Compatible with:
1-7/8" couplers
2" couplers
2-5/16" couplers
Ideal for travel trailers, utility trailers, boat trailers, and RVs.

11-Position Adjustable Fit
Unlike fixed-size trailer locks, this adjustable coupler lock:
Adapts to multiple coupler sizes
Provides tighter fit
Reduces movement inside coupler
Improves anti-theft protection
The universal design eliminates the need for multiple locks for different trailers.

Heavy-Duty Steel & Aluminum Construction
Built for durability and security:
Reinforced U-shaped steel bar
High-strength A36 steel components
Solid aluminum lock body
Wider and thicker structure for added strength
This tow ball coupler lock resists cutting, prying, and shearing attempts.

Upgraded Lock Cylinder System
Security starts at the core.
Complex internal locking mechanism
Thickened round security keys
Increased resistance to picking and forced entry
Durable key design reduces bending or snapping
Designed to provide reliable long-term protection.

Rustproof & Weather-Resistant
Engineered for outdoor environments, this trailer hitch coupler lock features:
Corrosion-resistant materials
Weatherproof construction
Protective coating against rain and road debris
Suitable for year-round use in all weather conditions.

Ideal Applications
Perfect for:
Travel trailers
Boat trailers
Utility trailers
RV campers
Equipment trailers
Acts as a strong theft deterrent when parked at campsites, driveways, or storage yards.