BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft - With Handle

In this review of the BOYISEN 5th Wheel King Pin Lock the bottom line is simple: it is a purposeful anti-theft device for drivers who want a durable, easy-to-use kingpin lock that stays visible when installed. Designed for RV owners, fleet drivers and trailer operators, the lock combines a solid steel build with a high-visibility warning tag and a convenient handle that makes locking under a trailer less awkward. The reviewer found it feels heavier and more robust than many cast locks, and the keyed-unique blossom cylinder provides peace of mind about key duplication.

Key Features

• Handle design: The outward-turning cylinder and integrated handle make it easier to reach and operate the lock while working beneath a 5th wheel trailer.
• Keyed unique blossom lock: A blossom-style cylinder resists simple breakage and prevents other identical locks from sharing the same key code, increasing security.
• Solid steel construction: Built from solid steel rather than cast parts, the lock is more weather resistant and harder to compromise with routine tools or theft drills.
• High visibility warning tag: A red warning tag makes it obvious when the kingpin lock remains in place, reducing the chance of attempting to hitch with the lock still installed.
• Spare keys included: Three keys are supplied so you can keep a backup set for drivers or fleet managers without needing replacements immediately.

Who It's For

This kingpin lock is ideal for RV owners, camper drivers and small fleet operators who regularly park or store trailers and want a straightforward, durable anti-theft measure. The heavy steel body and visible tag suit users who value a physical deterrent that is quick to install or remove.

Those who need ultra-high security against advanced theft tools or who require an electronic keyed solution should look elsewhere, but for everyday protection, quick deployment and weather resistance this lock is a practical choice.

Pros & Cons

Pros

• Easy to operate thanks to the outward-turning cylinder and handle that reduce awkward reaching.
• Robust build quality from solid steel gives confidence against casual theft and harsh weather.
• High visibility warning tag and three included keys improve safety and convenience.

Cons

• Not marketed as impervious to heavy professional theft tools, so extreme protection is limited.

Specifications

Product Type	5th wheel kingpin lock
Material	Solid steel construction
Lock Cylinder	Keyed unique blossom lock
Keys Included	3 keys
Visibility	Red warning tag
Handle	Integrated handle, cylinder turns outward

Our Verdict

The BOYISEN kingpin lock is a sensible, good-value choice for RV owners and fleet drivers who need a reliable, easy-to-use physical deterrent. Its solid steel build, unique blossom key and visible warning tag make it a practical everyday security tool, while the handle improves usability when working under a trailer.

Frequently Asked Questions

Will the lock fit standard 5th wheel kingpins?
The design is intended for universal 5th wheel kingpin use and fits common trailer kingpin configurations.

How many keys are supplied?
Three keys come with the lock so you can keep a spare set for backup.

Is the lock weather resistant?
Yes, the solid steel construction is designed to withstand weather and resist routine corrosion better than typical cast locks.