10 Best Trailer Tongue Locks 2026 in the United States

The Rhino USA Trailer Hitch Coupler Lock Kit is designed to secure 2-inch trailer couplers, making it suitable for boats, RVs, travel trailers, and more. Constructed from reinforced solid steel, it promises strength and durability, which is essential for anti-theft protection. The lock kit features a black powder coating to prevent rust and corrosion, enhancing its weather resistance and making it a good choice for extended outdoor use. This is particularly beneficial if your trailer is frequently exposed to harsh weather conditions.

In terms of compatibility, it fits most 2-inch couplers with a maximum coupler lip width of 3-3/4 inches and height of 3/8 inches, ensuring it can secure a wide range of trailers. The product's ease of use is another significant advantage, as it provides peace of mind and confidence in securing your trailer. However, it is worth noting that while the product description emphasizes American ownership and family operation, the lock is manufactured in China, which might be a consideration for some buyers. Additionally, at 1.89 pounds, it is relatively lightweight, which could be seen as both a positive for portability and a potential concern for those who equate weight with strength.

The Rhino USA Trailer Hitch Coupler Lock Kit is a solid option for trailer owners looking for a reliable, durable, and weather-resistant lock to protect their property from theft.

The AMPLock U-BRP2516 Heavy Duty Trailer Coupler Lock is designed for serious security on trailers and RVs with a 2 5/16-inch ball coupler and straight lip. Made from durable stainless steel, it offers strong resistance against cutting, drilling, rust, and weather damage, making it a good choice for outdoor use in various climates. Its push and lock system simplifies installation and daily use, eliminating complicated locking steps.

The customized fit ensures the lock snugly secures the trailer tongue, reducing chances for theft. It weighs about 10 pounds, which might be a bit heavy if you prefer something lighter to carry. Also, the lock is specifically tailored for 2 5/16-inch straight lip couplers, so it won’t fit other sizes or styles. The one-year limited warranty offers some peace of mind, although it’s fairly standard and excludes misuse or damage outside normal conditions.

This lock is ideal for trailer owners who want high-strength, weatherproof protection without fuss, especially those with compatible coupler sizes looking for a straightforward and effective anti-theft device.

The AMPLock U-BRP2 is a strong and reliable trailer coupler lock designed for 2-inch ball hitches, making it a solid choice for RVs, boats, and travel trailers. It’s made from rust-resistant stainless steel, so it stands up well to harsh weather and resists corrosion, which is important if you store your trailer outdoors. The lock uses a patented two-part push-and-lock system, allowing you to secure your trailer quickly and without fuss—this ease of use can be a big plus if you want dependable security without complicated steps.

Its snug, customized fit helps deter theft effectively, and the design also protects against more advanced break-in attempts, adding extra peace of mind. With a strong brand reputation reflected in many positive reviews and a one-year limited warranty, it’s clear this lock is trusted by many users. On the downside, it weighs about 10 pounds and is somewhat bulky, which might make it less convenient to carry around frequently.

Also, while the lock fits standard 2-inch ball couplers, it won’t work with other sizes, so compatibility is limited to that hitch size. If you need a heavy-duty, weatherproof lock that’s easy to use and offers solid theft protection for a 2-inch trailer ball, the AMPLock U-BRP2 stands out as a dependable option.