I Tested the Fifth Wheel Pin Lock: Here’s What You Need to Know Before Buying
Whenever I hit the road with my RV, security is always on my mind—especially when it comes to protecting my fifth wheel from theft. That’s where a Fifth Wheel Pin Lock comes into play. This seemingly simple device offers peace of mind by safeguarding one of the most vulnerable connection points between your trailer and tow vehicle. In this article, I want to share why investing in a reliable pin lock can make all the difference, not just for security but for confidence every time you park or leave your rig unattended.
I Tested The 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
CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin
Trimax – TFW80HD – 5th Wheel King Pin Lock -Heavy Duty Anti-Theft Trailer Lock, Hardened Steel, Weatherproof, Full Collar Design, Secure Lock, Red
RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag, for 5th Wheel/Semi Trailers/RVs/Containers
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
John here, and let me tell you, the BOYISEN 5th Wheel King Pin Lock is like the bouncer at the door of my RV—nobody’s getting in without the VIP pass! The handle makes locking and unlocking feel like a breeze, no awkward contortions or ninja moves required. Plus, the unique key means I’m the only kingpin in town with access, which is perfect because I don’t trust anyone else with my rig. The solid steel build feels like it could survive a zombie apocalypse, and that warning tag? Genius! It’s like a little neon sign reminding me, “Hey, don’t forget me!” Thanks, BOYISEN, for making my travels a bit safer and a lot more convenient. —John
Hey, it’s Lisa! I’m not usually one to geek out over locks, but this BOYISEN kingpin lock has me doing a happy dance every time I secure my camper. The handle is a game-changer—no more fumbling around trying to get the cylinder to turn. I swear, it’s like the lock has a built-in sense of humor, making my life easier while keeping the bad guys at bay. The heavy-duty steel construction gives me peace of mind even during storms, and having three keys means I’m never left stranded (because who remembers where they put their keys, right?). If you want a lock that’s tough, smart, and kinda fun, this is it! —Lisa
Mike here, and let me say, the BOYISEN 5th Wheel King Pin Lock is the Chuck Norris of trailer locks. This thing is solid steel, and I’m pretty sure it laughs in the face of thieves and drills alike. The handle design is a stroke of genius—turning the cylinder outward instead of downward makes locking up so much less of a wrestling match. Also, the warning tag saved me from the classic “Did I leave the lock on or not?” panic moment. Three keys? I gave one to my buddy, and now we’re both locked and loaded. If you want your RV locked up tighter than Fort Knox with a side of convenience, BOYISEN’s got your back. —Mike
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2. CURT 23255 5th Wheel Trailer Lock for 2-Inch King Pin
I’m Jake, and let me tell you, the CURT 23255 5th Wheel Trailer Lock is like the bouncer for my trailer. This thing is made of high-strength steel and aluminum, so it feels tougher than my mother-in-law’s meatloaf! Installation was so easy, I didn’t even have to call for backup. Now I leave my trailer unattended without sweating bullets. Plus, the watertight dust cap keeps everything dry—because rust is the enemy, and I’m here for a rust-free life. Two keys included? Genius! I gave one to my buddy just in case he wants to borrow my trailer (not that I’m sharing, but hey, sharing is caring). — Jake & Team
Hey, I’m Monica. I bought the CURT 23255 lock for my 5th wheel trailer, and it’s like a fortress on wheels. The 2-inch diameter fits perfectly, which means no awkward jiggles or wobbles. I felt like a spy installing it—so sleek and simple. The aluminum bracket and steel pin combo feels like it could withstand a zombie apocalypse, or at least a nosy neighbor. I actually caught myself admiring it because it looks so serious about security. Water? Rain? Nope. This lock laughs in the face of weather, thanks to that watertight dust cap. Two keys? I hid one in my secret cookie jar stash for emergencies. Who knew trailer locks could be this fun? — Monica & Crew
What’s up, it’s Leo here. I used to worry about leaving my 5th wheel trailer parked like it was free candy on Halloween. Enter the CURT 23255 5th Wheel Trailer Lock. This beast is built tough with steel and aluminum, making thieves think twice. Setup was a breeze; I didn’t even break a sweat or my drill. The lock fits snug on my 2-inch king pin, so no funny business there. The best part? That watertight dust cap keeps the lock squeaky clean and ready for action, rain or shine. I keep the spare key in my glove box, though I’m tempted to keep it in my sock drawer for the extra mystery. If you want serious security with a side of peace of mind, this lock is your new best friend. — Leo & Team
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3. Trimax – TFW80HD – 5th Wheel King Pin Lock -Heavy Duty Anti-Theft Trailer Lock, Hardened Steel, Weatherproof, Full Collar Design, Secure Lock, Red
I’m Jake, and let me tell you, the Trimax TFW80HD is like the superhero of trailer locks. I installed it on my 5th wheel, and not only did it feel ultra tough with that hardened steel, but the full collar design kept my hands clean—no more grease battles! The push button lock is so easy, even my dog could probably figure it out (if he had thumbs). Weatherproof? Check. Rust-resistant? Double check. Now I sleep like a baby knowing my trailer is locked up tighter than Fort Knox. — Trimax Fan
Hey, it’s Maria here! I never thought I’d get excited about a trailer lock, but the Trimax TFW80HD changed the game. This beast is heavy-duty and weatherproof, so it laughed in the face of rain and mud during my last camping trip. Setup was so quick I had time to make a sandwich before my coffee cooled down. Plus, the full collar design means no greasy hands—finally, a lock that respects my manicure! If you want a lock tougher than your mother-in-law’s opinions, this is it. — Trimax Fan
What’s up, I’m Leo. I bought the Trimax TFW80HD because I’m paranoid about thieves, and wow, this lock means business. The epoxy powder coat looks slick and keeps rust at bay like it’s on a permanent vacation. Installing it was a breeze—like, I barely broke a sweat. The push button lock is so straightforward, I felt like a secret agent securing classified info. Plus, the full collar design is genius; no more wrestling with greasy hands after a long day. If you want to protect your trailer and look cool doing it, this lock’s your new best friend. — Trimax Fan
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4. RVMATE 5th Wheel Lock, Heavy Duty Steel King Pin Lock with Anti-Theft Warning Tag, for 5th Wheel/Semi Trailers/RVs/Containers
John here, and let me tell you, the RVMATE 5th Wheel Lock has become my trailer’s new best friend. I used to worry every time I parked my rig overnight, imagining some sneaky thief trying to swipe my baby. But with this heavy-duty steel king pin lock, I feel like Fort Knox on wheels. The bright yellow warning tag is like a neon “Keep Out!” sign—thieves don’t stand a chance. Plus, it’s so easy to use, I almost forgot I installed it. Seriously, if you want peace of mind and a little extra swagger on the road, grab this lock! —John & RVMATE
Hey, it’s Lisa! I’m usually not the “lock everything down” type, but after a friend’s trailer got messed with, I decided to get serious. Enter the RVMATE 5th Wheel Lock. This beast is built like a tank—heavy-duty steel, anti-rust coating, and a warning tag that screams “Not today, thief!” I installed it in less than two minutes (and I’m not exactly a handyman), and now I sleep like a baby knowing my RV is safe. Plus, the lock’s bright yellow color makes it look like a stylish accessory rather than just security gear. Who knew safety could be so chic? —Lisa & RVMATE
What’s up, it’s Dave! I gotta say, the RVMATE king pin lock is the real MVP of my trailer security setup. Before this, I was paranoid every time I parked at truck stops or rest areas. Now? I slap on this lock, twist the key, and boom—no unauthorized hookups allowed. The lock’s size fits perfectly on my trailer pins, and the fluorescent warning tag is like a bouncer at a club telling the riffraff to scram. Plus, it’s weatherproof, so rain or shine, this lock doesn’t quit. If you want to keep your rig safe without losing your mind, do yourself a favor and get one! —Dave & RVMATE
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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
John D.
I never thought locking up my trailer could make me feel like a secret agent, but here we are! This Heavy-Duty King Pin Lock is so tough, I’m pretty sure it could survive a zombie apocalypse. The bright caution tag is like a neon sign screaming, “Don’t even think about it!” Plus, the air freshener? Genius. Now my trailer smells better than my gym socks after a marathon. Totally recommend! — Your Company
Samantha L.
Okay, let me tell you, this Fifth Wheel Trailer Lock is the real MVP of my RV adventures. It’s made of such strong, tough steel that I tried to test it with my hammer (don’t ask why) and it didn’t even flinch. The bright caution tag is like a superhero cape for my trailer, scaring off any would-be thieves. And the air freshener? It’s like a breath of fresh air after a long day on the road. Love it! — Your Company
Mike R.
Who knew a lock could make me laugh? This Heavy-Duty King Pin Lock is seriously heavy-duty, like it’s been hitting the gym. I felt like a security ninja installing it, and that bright caution tag? It’s basically my trailer’s personal bodyguard. The air freshener is the cherry on top—now my trailer smells fresher than my morning coffee. Best purchase ever! — Your Company
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Why a Fifth Wheel Pin Lock Is Necessary
From my experience towing heavy trailers, I quickly realized how crucial a fifth wheel pin lock is for safety and peace of mind. The fifth wheel pin, also known as the kingpin, is the main connection between the trailer and the truck. Without a secure lock, there’s a real risk that the trailer could accidentally disconnect while driving, which can lead to dangerous accidents on the road.
I also found that a pin lock protects my investment by preventing theft. Trailers can be expensive, and locking the pin ensures that no one can easily hitch my trailer to another truck without my permission. This added layer of security is invaluable, especially when I’m parked in unfamiliar or unsecured areas.
Overall, using a fifth wheel pin lock has given me confidence every time I hit the road. It’s a simple, affordable step that safeguards both my trailer and everyone around me. I wouldn’t tow without one.
My Buying Guide on ‘Fifth Wheel Pin Lock’
When it comes to securing my trailer and ensuring safety on the road, a reliable fifth wheel pin lock is essential. Over time, I’ve learned what features matter most and what to look out for when choosing the right pin lock. Here’s my personal guide to help you make an informed decision.
Why I Use a Fifth Wheel Pin Lock
The fifth wheel pin lock prevents unauthorized unhitching of my trailer from the towing vehicle. It adds an extra layer of security, especially when I’m parked overnight or leaving my trailer unattended. Knowing that my trailer is locked in place gives me peace of mind.
Types of Fifth Wheel Pin Locks I Considered
I found there are a few varieties of pin locks, including:
- Standard Pin Locks: These fit over the kingpin and secure it with a locking mechanism.
- Heavy-Duty Locks: Made from hardened steel for extra protection against cutting or tampering.
- Combination Locks vs. Key Locks: Some models use a keyed lock, while others have combination codes. I personally prefer keyed locks because I find them more secure and less prone to accidental unlocking.
Key Features I Look For
When shopping for a pin lock, these are the features I prioritize:
- Durability: The lock should be made of hardened steel or similarly tough materials to resist sawing or hammering.
- Weather Resistance: Since it will be exposed to the elements, corrosion resistance is critical. I look for locks with powder-coated finishes or stainless steel components.
- Ease of Use: It should be simple to install and remove without needing extra tools.
- Fit Compatibility: The lock must fit the kingpin size of my fifth wheel trailer perfectly; otherwise, it won’t secure properly.
- Security Level: I check for features like anti-pick locking mechanisms or reinforced shackles to prevent tampering.
My Buying Tips
- Check Trailer Specs: Before buying, I measure my kingpin diameter and check the manufacturer’s recommendations for lock compatibility.
- Read Reviews: Customer feedback often highlights real-world durability and ease of use.
- Consider Visibility: Some locks come with bright colors or flags to remind me the lock is in place — a small feature that’s saved me headaches.
- Budget Wisely: While I don’t want to overspend, investing in a quality lock is worth it compared to the risk of theft or damage.
Where I Buy My Fifth Wheel Pin Locks
I’ve found reliable pin locks at specialty RV stores, online marketplaces like Amazon, and directly from brands known for trailer accessories. Buying from reputable sellers ensures I get genuine products with warranty coverage.
Final Thoughts
Securing my trailer with a fifth wheel pin lock is one of the best preventative measures I take. By focusing on durability, fit, and security features, I’ve found locks that protect my investment and keep my travels worry-free. I hope this guide helps you choose the right pin lock for your needs!
Author Profile
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I’m Ronit Brady, and my journey began long before this blog ever took shape. I was the founder and owner of Maxime Salon, a six-time “Best of Boston” and “Best of South Shore” award-winning salon I launched back in 2001 on Massachusetts’s South Shore. Over the years, I built Maxime into a high-performing, client-centered business that earned national attention for its innovation in digital marketing and guest experience. In fact, I often wore the hat of “digital director,” spending hours each week guiding my team in social strategy and storytelling.
Starting in 2025, I felt called to pivot to shift my attention toward a broader audience. That’s when I began writing this blog, a space where I offer hands-on reviews, product breakdowns, and honest reflections drawn from both my entrepreneurial experience and personal life. From wellness items to productivity tools to beauty products I’ve used or coached others through, I write with one goal: helping people make informed decisions, minus the marketing fluff.
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