AMPLock U-BRP2516 Heavy Duty Trailer Coupler Lock 2 5/16 - Anti Theft

Our review of the AMPLock U-BRP2516 finds it best suited for RV and trailer owners who want a straightforward, heavy duty coupler lock that prioritizes physical resistance over convenience bells and whistles. The single biggest reason to buy is its high-strength construction and tailored fit for 2 5/16 in straight-lip couplers, which together deliver tangible theft deterrence and peace of mind when leaving a trailer unattended. Installation is quick with the push-and-lock system, and the lock's rust-resistant finish holds up well to outdoor storage.

Key Features

• High-strength build: Solid construction resists heat, acid and tampering to provide dependable protection against common theft attempts.
• Customized fit: Designed for 2 5/16 in ball couplers with a straight lip to ensure a snug, secure fit that prevents easy removal.
• Push and lock system: Fast, tool-free installation lets users lock the coupler in seconds without fumbling with complicated mechanisms.
• All-weather performance: Rust-resistant materials help the lock withstand rain and outdoor exposure for long-term reliability.
• Advanced theft resistance: Built to deter grinders and drills, offering added confidence when leaving trailers in public or storage.

Who It's For

This lock is ideal for owners of travel trailers, utility trailers and campers that use a 2 5/16 in straight-lip coupler and for anyone who values a physically robust anti-theft device over lightweight or novelty locks. Tow professionals and owners who frequently leave trailers at job sites or marinas will appreciate the heavy-duty protection.

It is less appropriate for owners with nonstandard couplers, those who need a lock for a different ball size, or buyers who want an ultra-lightweight option for occasional local use. If you need an electronic or keyless tracking solution, look elsewhere.

Pros & Cons

Pros

• Very solid, tank-like build that customers describe as hard to remove without the key.
• Quick push-and-lock mechanism makes locking and unlocking fast and simple.
• Rust-resistant finish and materials provide reliable outdoor durability.
• Custom fit for 2 5/16 in straight-lip couplers reduces play and improves security.

Cons

• Some users find it heavy and occasionally rough to remove, reflecting the tradeoff between strength and ease of handling.

Specifications

Brand	AMPLock
Model	U-BRP2516
Coupler fit	2 5/16 in straight-lip ball couplers
Locking system	Push and lock
Corrosion resistance	Rust-resistant materials for outdoor use
Theft resistance	Designed to resist grinders and drills

Our Verdict

The AMPLock U-BRP2516 is a no-nonsense, heavy duty trailer coupler lock that delivers strong physical protection for trailers with a 2 5/16 in straight-lip coupler. It is good value for owners who want proven, weather-resistant theft deterrence and a fast push-and-lock install, though its weight and firm fit mean it favors security over convenience.

Frequently Asked Questions

Will this fit my trailer?
It fits trailers with a 2 5/16 in ball coupler that has a straight lip; it is not intended for other ball sizes or coupler shapes.

Is it weather resistant?
Yes, the lock is made from rust-resistant materials designed to hold up to outdoor exposure.

Is it easy to install?
Yes, the push-and-lock system enables quick, tool-free installation in seconds.