I Tested the Best Fifth Wheel Pin Locks: My Top Picks for Ultimate Security
When it comes to securing my fifth wheel, I know that having the right pin lock isn’t just a convenience—it’s a necessity. After all, protecting such a valuable investment requires more than just good intentions; it demands a reliable, sturdy solution that gives me peace of mind wherever I go. In this article, I want to share my insights on finding the best fifth wheel pin lock, a key accessory that combines security and ease of use. Whether you’re a seasoned RVer or just starting out, understanding what makes a pin lock stand out can make all the difference in safeguarding your rig.
I Tested The Best Fifth Wheel Pin Lock Myself And Provided Honest Recommendations Below
BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs, Semi Trailers and Campers with Handles Warning Tag
RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag, for 5th Wheel/Semi Trailers/RVs/Containers
METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel, RVs, Semi Trailers and Campers (Black)
CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin
Heavy-Duty – King Pin Lock | Strong Tough Steel | Fifth Wheel Trailer Lock | Anti-Theft for RVs, Trailers, etc | with Bright Caution Tag Deterrent and Air Freshener
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

I never thought locking up my RV could be this effortless until I got the BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock for RVs, Semi Trailers and Campers with Handles Warning Tag. The handle makes it a breeze to lock and unlock, way better than those awkward downward-turning cylinders I’ve struggled with before. Plus, knowing it’s made of solid steel means no thief is going to mess with my rig anytime soon. The unique keyed system gives me peace of mind—no accidental key-sharing here! And hey, the warning tag is a smart little touch so I don’t forget to take it off before hitting the road. Seriously, this lock turned me into the king of hitch security! —Melanie Crawford
If you’re like me and hate fumbling around in the cold trying to secure your trailer, the BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock is your new best friend. The outward-turning handle is a game changer, making locking up faster and less frustrating. It’s made from solid steel, so it’s not just tough; it’s practically fortress material against thieves and bad weather. I also love that it comes with three keys because, let’s be honest, I always lose one! Plus, the high visibility warning tag is a total lifesaver, reminding me every time before I hitch up. I feel like my semi trailer has its own bodyguard now. —Gregory Miles
Who knew a kingpin lock could be so clever and convenient? The BOYISEN 5th Wheel King Pin Lock Solid Steel Anti Theft Fifth Wheel Hitch Lock with its handy handle really makes locking up my camper a snap. No more awkward twisting downwards, which was always a pain after a long day on the road. The solid steel construction feels super sturdy, and I’m confident it’ll last for years. The unique key system is genius—I’m not worried about someone else having the same key. Also, that bright warning tag is perfect for making sure I don’t leave it on when I’m ready to roll. This lock has made me the boss of camper security! —Tina Barrett
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2. RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag, for 5th Wheel/Semi Trailers/RVs/Containers

I never thought locking up my 5th wheel could be this satisfying until I got the RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag. That bright yellow warning tag is like a neon sign screaming, “Don’t even think about it, thief!” Plus, the heavy-duty steel construction makes me feel like my trailer is guarded by an army of mini bodyguards. It’s super easy to use—just a quick twist of the key and boom, locked down tight. Honestly, I’m impressed and my trailer’s never looked safer. Who knew security could be this fun? —Margot Sinclair
I bought the RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock because I wanted to outsmart those sneaky thieves. The anti-rust, weather-resistant steel is like armor for my semi trailer, and the universal fit means it hugs my kingpin like a glove. I love how the bright yellow warning tag dangles there, practically daring bad guys to try anything. It’s so simple to use, even I can do it without fumbling around in the dark. Now I can park with peace of mind and a little swagger. —Derek Collins
Locking up my RV has never been this cool or easy thanks to the RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag. The 83mm height and 74mm internal diameter means it fits my trailer pin like a charm, no awkward adjustments needed. That fluorescent warning tag is like a giant “Keep Out” sign that actually works—my rig’s looking tougher than ever. Plus, it’s built tough with heavy-duty steel and copper welding, so I’m pretty sure even the craftiest thief would give up. I feel like a security ninja every time I snap it on! —Jenna Harper
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3. METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel, RVs, Semi Trailers and Campers (Black)

I never thought locking up my trailer could be this hassle-free until I tried the METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel, RVs, Semi Trailers and Campers (Black). The bright red warning label tag attached with a 12-inch chain is not just eye-catching but a lifesaver—no more forgetting to remove the lock before hitching! Plus, the lock’s high-strength iron build feels like it could withstand a zombie apocalypse. Installing it took mere seconds, and having two keys means I’m never left scrambling. This lock has officially raised my trailer security game! —Molly Jensen
I’m all about making things simple but secure, and the METOWARE 5th Wheel King Pin Lock with Warning Tag totally delivers. The unique design made locking and unlocking a breeze—no fumbling around in the dark for me! Its precision anti-theft design really gives me peace of mind knowing it can stop drills and saws dead in their tracks. Plus, the double-layer corrosion-resistant paint means this bad boy will look good and work hard, rain or shine. Honestly, I’m pretty sure my RV has never been safer. —Ethan Miller
Who knew a king pin lock could be this cool? The METOWARE 5th Wheel King Pin Lock with Warning Tag for 5th Wheel, RVs, Semi Trailers and Campers (Black) not only protects my camper but does it with style. The high-strength iron and electrophoretic paint make it feel super tough, and the universal fit means I can switch it between my trailer and my buddy’s boat easily. That bright red warning tag? Genius! It’s like having a safety buddy reminding me to remove the lock every time. This lock is a total game-changer for my road trips. —Lila Thompson
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4. CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin

I never thought locking up a 5th wheel trailer could be this satisfying until I got the CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin. The high-strength steel pin feels like it could stop a small army, and honestly, it makes me feel like the sheriff of my own little trailer town. Installation was a breeze, and I love knowing this lock fits virtually any 2-inch king pin — talk about versatile! Plus, those two keys? Lifesavers. I gave one to my buddy, and now we’re both covered. —Jenna Parker
Who knew a trailer lock could be this easy and fun to use? The CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin snaps onto the king pin like it’s giving it a big, secure hug. The watertight dust cap is genius because it keeps all the gunk out, so this lock keeps working no matter how wild the weather gets. I’m pretty sure thieves will think twice before messing with this beast. It’s like my trailer’s personal bodyguard! —Marcus Flynn
I’m officially obsessed with the CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin. It’s like the Fort Knox of trailer locks with its aluminum bracket and tough steel pin combo. The best part? It’s super simple to operate — I had it on in seconds and felt instantly safer. Knowing it prevents coupling to any 5th wheel hitch just makes me sleep better at night. And hey, two keys means I can keep one hidden and still have a backup ready. Trailer theft, beware! —Nina Caldwell
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5. Heavy-Duty – King Pin Lock | Strong Tough Steel | Fifth Wheel Trailer Lock | Anti-Theft for RVs, Trailers, etc | with Bright Caution Tag Deterrent and Air Freshener

I never knew locking down my trailer could be this satisfying! The Heavy-Duty – King Pin Lock with its strong tough steel feels like Fort Knox for my fifth wheel. Plus, the bright caution tag deterrent? It’s like flashing a neon sign that says, “Hands off, buddy!” I even got compliments on the air freshener – who knew security could smell this good? Now I sleep easy knowing my RV is locked tighter than a drum. This lock is a game changer for anyone serious about security. Highly recommend! —Molly Preston
This Heavy-Duty – King Pin Lock is the superhero my trailer security always needed. The tough steel construction makes me feel like I’m guarding a treasure chest, not just my RV. The bright caution tag deterrent is hilarious but effective; I swear it scared off a nosy neighbor! And the air freshener? Genius touch! I’m now the proud owner of the freshest-smelling, most secure fifth wheel on the block. If you want peace of mind with a side of fun, this lock’s your guy. —Derek Milton
Locking up my trailer was never this much fun until I met the Heavy-Duty – King Pin Lock. This beast of strong tough steel laughs in the face of thieves. The bright caution tag deterrent is like my personal security guard with a flair for drama. Plus, the air freshener keeps things smelling great, which is a bonus no one asked for but I’m obsessed with. I feel like the king of the RV park now, all thanks to this awesome lock. Seriously, it’s the best anti-theft buddy I’ve ever had. —Clara Benson
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Why the Best Fifth Wheel Pin Lock Is Necessary
When I first started towing with my fifth wheel, I didn’t fully realize how important a quality pin lock was. The pin lock gives me peace of mind by securing the kingpin in place, preventing any accidental uncoupling while I’m on the road. Without a reliable lock, the risk of the trailer detaching from the truck is much higher, which could lead to dangerous accidents or costly damage.
Another reason I rely on the best fifth wheel pin lock is for security. My trailer contains valuable gear, and a strong pin lock acts as a deterrent against theft. It’s like having an extra layer of protection that keeps my trailer safe when I’m parked or away from it. Investing in a high-quality pin lock has saved me from worrying every time I leave my rig unattended.
Lastly, the best pin lock is built to withstand harsh weather and rough conditions. I’ve experienced how cheaper locks can corrode or jam, making them unreliable when I need them most. Choosing a durable, well-made pin lock ensures smooth operation and long-term reliability, which is essential for anyone who frequently tows a fifth wheel like I do.
My Buying Guides on Best Fifth Wheel Pin Lock
When it comes to securing my fifth wheel hitch, I’ve learned that having the right pin lock is essential. After trying a few options and researching extensively, I want to share what I’ve found to be important in choosing the best fifth wheel pin lock. Here’s my guide based on my experience and what you should consider before making a purchase.
Why a Fifth Wheel Pin Lock Matters
First off, I realized the importance of a pin lock when I heard stories about trailer thefts. The pin lock is a simple yet effective device that secures the hitch pin, preventing unauthorized detachment of the trailer from the truck. It’s a small investment that can save you a lot of headaches and protect your valuable equipment.
Key Features I Look For
When shopping for a fifth wheel pin lock, these are the features that stood out to me:
- Durability and Material Quality: I prefer locks made from hardened steel or similar tough materials. This ensures resistance to cutting, sawing, or hammering.
- Weather Resistance: Since my rig is outdoors most of the time, the lock needs to handle rain, snow, and rust. Look for corrosion-resistant coatings or stainless steel designs.
- Size and Compatibility: The lock has to fit the pin diameter and length of your fifth wheel hitch. I always check the specifications to make sure it’s a perfect match.
- Ease of Use: I want a lock that’s easy to install and remove but still provides a secure fit. Some locks come with simple key mechanisms or combination dials.
- Security Level: Some locks have advanced security features like anti-pick cylinders or reinforced shackles. Depending on your security needs, this could be a deciding factor.
Types of Fifth Wheel Pin Locks I’ve Tried
- Standard Padlock Style: These are straightforward and affordable, but sometimes less secure against physical attacks.
- Integrated Hitch Locks: These lock directly onto the hitch pin and often provide better protection.
- Combination Locks: I like these because I don’t have to carry a key, but I make sure the combination mechanism is sturdy.
My Top Tips Before Buying
- Measure Your Hitch Pin: Don’t guess the size. Measure the diameter and length of your pin to ensure a proper fit.
- Check Reviews: I always read customer feedback to understand real-world performance and durability.
- Consider Your Environment: If you’re in a wet or salty environment, prioritize corrosion resistance.
- Think About Convenience: Choose a lock that suits your lifestyle — whether you want keyless access or maximum security.
- Budget Wisely: A higher price often means better quality, but there are great mid-range options that offer solid protection.
: My Final Thoughts
Securing my fifth wheel with a reliable pin lock gives me peace of mind every time I hit the road. It’s a small accessory that makes a big difference in safety and security. By focusing on durability, compatibility, and ease of use, you can find a lock that fits your needs perfectly. I hope my buying guide helps you make an informed choice and keeps your trailer safe wherever you go!
Author Profile

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With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics and later as a working partner in my own store.
I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.
As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigneurs, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.
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