10 Best Fifth Wheel Locks 2025 in the United States

The BOYISEN 5th Wheel King Pin Lock stands out due to its solid steel construction, which offers robust anti-theft protection for RVs, container trailers, and campers. This heavy-duty lock is designed with ease of use in mind, featuring a convenient handle and an outward-facing turn cylinder, making it simpler to lock and unlock.

The inclusion of three unique keys ensures you have backups and eliminates the worry of others having the same key, thanks to the specially designed blossom lock mechanism that provides enhanced security against break-ins. The lock's high visibility, with an attached warning tag, acts as a reminder to remove it before hitching, which can be particularly handy.

Weather resistance is another crucial aspect, and the solid steel material promises durability, making it suitable for various weather conditions and ensuring a long lifespan. The lock's universal fit makes it versatile for use with different vehicles like RVs, boats, and campers, making it a practical choice for multiple users, including trucking companies and RV dealers.

The AMPLock U-LPCVR Heavy Duty 5th Wheel Lock is a robust security solution for travel trailers. It's constructed from high-quality stainless steel and cast iron, making it extremely durable and resistant to tampering. The lock features a patented cylinder lock and a unique conical design that prevents traction with chains and modified hitches, enhancing security when your trailer is unhitched.

Weighing in at 10 pounds, it acts as a significant deterrent to theft through cutting or other tampering methods. The lock is designed for easy use with a push-and-lock system that simplifies installation and removal, which is handy for frequent use. The product dimensions (7 x 6 x 8.5 inches) suggest it should be compatible with most fifth wheel setups, although checking specific compatibility is recommended.

One drawback could be its weight, which might make it cumbersome for some users to handle. Additionally, while it is highly resistant and durable, there's no specific mention of weather resistance, which might be a consideration for outdoor storage. With a strong customer rating of 4.6 out of 5 stars, it is well-regarded for its reliability and security. This lock is particularly suitable for those needing heavy-duty protection for commercial trailers and semi-trailers.

The Trimax TFW80HD 5th Wheel King Pin Lock is designed to offer reliable security for your fifth-wheel trailer. Made from ultra-tough steel, it promises durability and resistance against tampering. Its rugged weatherproof epoxy powder coat enhances longevity by providing rust and corrosion resistance, making it suitable for various weather conditions.

The full collar design is a thoughtful addition as it not only boosts security but also prevents grease transfer to your hands, keeping them clean during installation and removal. The easy push button lock mechanism simplifies the process, allowing for a quick and hassle-free locking and unlocking experience.

Weighing around 3.39 pounds and with compact dimensions, it is relatively easy to handle and install, adding to its convenience. This lock is well-suited for individuals seeking a durable and easy-to-use solution for securing their fifth-wheel trailers in various environments.