20 Best Fifth Wheel Locks of 2025 – Romance University

After hours researching and comparing all models on the market, Romance University finds out the Best Fifth Wheel Locks of 2025. Check our ranking below.

2,395 Reviews Scanned

Rank No. #1

BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs, Semi Trailers and Campers with Handles Warning Tag

More Convenient with Handle, Compared with other kingpin lock, BOYISEN trailer kingpin Lock add handle and turn cylinder outward instead of downward, more convenient while lock or unlock for 5th wheel
Keyed Unique, no worry about another BOYISEN kingpin lock owner will have the same key. BOYISEN anti theft trailer lock using blossom lock, not easy to break; Come with 3 keys for your lock, so you can keep one as backup
Heavy Duty Construction: This 5th wheel hitch lock is made of solid steel instead of casting steel, strong enough for weather resistant, hard to break. The heavy duty steel will add more difficulties for steal drills, and lasts for years
Key Lost? No Worrying! In 2025 batches locks, there's a key ID printed on the key, please note it down or take a photo of it, provide us with the key ID to copy the key if your keys are lost
High Visibility: This Kingpin lock is designed with a warning tag, so you could notice if it is still stay in place, and remind you of removing it when you want to hitching

Rank No. #2

BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft for RVs, Container Trailers and Campers with Handles Warning Tag 3 Keys Black

More Convenient with Handle, Compared with other kingpin lock, BOYISEN trailer kingpin Lock add handle and turn cylinder outward instead of downward, it will be more convenient while lock or unlock for 5th wheel under trailer
Keyed Unique, no worry about another BOYISEN kingpin lock owner will have the same key. Unlike other 5th wheel lock using flat keys, BOYISEN anti theft trailer lock using blossom lock, not easy to break; Come with 3 keys for your lock, so you can keep one as backup
Heavy Duty Construction: This Trailer Lock is made of solid steel instead of casting steel, strong enough for weather resistant, hard to break. The heavy duty steel will add more difficulties for steal drills, and lasts for years
High Visibility: This Kingpin lock is designed with a warning tag, so you could notice if it is still stay in place, and remind you of removing it when you want to hitching
Universal Fit: ideal for trucking companies, RV dealers or fleet drivers, used for RVs, Boats and Campers Container Trailer

Rank No. #3

METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel, RVs, Semi Trailers and Campers (Black)

EYE-CATCHING WARNING LABELS:This 5th wheel King Pin lock comes with a 12-inch chain and bright red warning label tag attachment that will remind you to remove it before hitching. Each warning label has a warning message in English to keep you safe.
HIGH STRENGTH MATERIAL:This king pin lock is made of high-strength iron for durability, weather resistance and resistance to damage. This lock is coated with a double layer of electrophoretic paint to prevent corrosion and rust for a more reliable performance, it is perfect for protecting your trailer on the road or hauling.
UNIQUE DESIGN:The Kingpin lock is easy to lock and unlock, takes seconds to install and comes with two keys so you don't have to worry about losing them.
PRECISION ANTI-THEFT DESIGN:This fifth wheel king pin lock can well enclose the main pin lock to effectively prevent drills, saws and other damaging tools. The heavy-duty precision mechanism protects your trailer perfectly so you don't have to worry about it.
UNIVERSALITY:The 5th wheel king pin lock is the best choice for RVs, boats, and camping semi-trailers, the petite size can be applied to a wide range of vehicles, adding convenience to your journey.

Rank No. #4

RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag, for 5th Wheel/Semi Trailers/RVs/Containers

[Keep Your 5th Wheel Secure] : King pin lock can prevent thieves from connecting your fifth wheel kingpin and avoid unauthorized movement. The durable construction, eye-catching yellow lock and tag serve as a warning and deterrent against theft to keep your 5th wheel secure.
[Dimension]: The dimension of the trailer king pin lock is 83 mm in height, with an internal diameter of 74mm, a universal fit for 50 mm diameter trailer pins. Thus, the lock can be widely applied in semi trailers, 5th wheels, trucks, boats, containers and many other scenarios.
[High Quality Material]: Trailer king pin is made of heavy duty steel copper, processed with welding construction. The surface adopts electrostatic treatment, featuring the body with weather resistance and anti-rust, making it sturdy enough and hard to break even by experienced thieves. Therefore effectively increase the safety factor and reduce the probability of theft when installed onto trailer.
[Warning Tag]: The main tone of bright yellow designed as a sign of strong visible warning. The chain with fluorescent warning tag hanging down passes on message to someone to try and steal : Caution! King pin lock installed! If a would-be thief sees the lock, they'll likely move on to an easier target.
[Easy to Use]: The trailer hitch lock is rather easy to use. You just need to engage the lock onto the trailer hitch, then insert the key into lock cylinder and rotate 180 degrees, the king pin lock firmly installed. (Attention: Every lock has its own keys. Different locks don't share the keys.)

Rank No. #5

Curt 23255 Dumbbell Style King Pin Lock

Locks on to 5th wheel kingpin to deter theft of 5th wheel trailer
Universal design fits most 5th wheel trailer kingpins
Built with a strong aluminum body for reliable security
Two keys included for added convenience
Protected with a strong chrome-plated and powder coated aluminum finish

Last update on 2026-06-13 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best Fifth Wheel Locks?

Do you get stressed out thinking about shopping for a great Fifth Wheel Locks? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching Fifth Wheel Locks, which is why we have assembled a comprehensive list of the greatest Fifth Wheel Locks available in the current market. We’ve also come up with a list of questions that you probably have yourself.

Romance University has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for Fifth Wheel Locks that you consider buying. Your questions might include the following:

Is it worth buying an Fifth Wheel Locks?
What benefits are there with buying an Fifth Wheel Locks?
What factors deserve consideration when shopping for an effective Fifth Wheel Locks?
Why is it crucial to invest in any Fifth Wheel Locks, much less the best one?
Which Fifth Wheel Locks are good in the current market?
Where can you find information like this about Fifth Wheel Locks?

We’re convinced that you likely have far more questions than just these regarding Fifth Wheel Locks, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for Fifth Wheel Locks, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible Fifth Wheel Locks. Make sure that you are only using trustworthy and credible websites and sources.

Romance University provides an Fifth Wheel Locks buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available Fifth Wheel Locks currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

Brand Value: Every brand of Fifth Wheel Locks has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an Fifth Wheel Locks?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your Fifth Wheel Locks.
Customer Ratings: Number ratings grade Fifth Wheel Locks objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their Fifth Wheel Locks.
Product Quality: You don’t always get what you pay for with an Fifth Wheel Locks, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an Fifth Wheel Locks is should be an indication of how long it will work out for you.

Romance University always remembers that maintaining Fifth Wheel Locks information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding Fifth Wheel Locks is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: What is a fifth wheel lock?

A: A fifth wheel hitch lock prevents theft by wrapping itself around the trailer’s king pin. By over-sizing the shape of the coupler, a carjacker will be unable to latch the mobile cargo into the shape of its hitch.

Q: What is a 5th Wheel Attachment?

A: 5th Wheel Attachment. The fork-mounted 5th Wheel Attachment provides a simple and effective means of moving and rearranging trailers and chassis. Three versions of the attachment are available that range in capacity, providing options for moving empty chassis, chassis with mounted empty containers, chassis with mounted full containers, and trailers efficiently.

Q: What is a fifth wheel king pin?

A: A 5th wheel king pin is a round steel shaft attached to the fifth wheel trailer’s coupler, this king pin slides into the jaws of the 5th wheel hitch on the truck for a secure mount.