I Tested the Best Tow Bar Pin Locks: My Honest Guide to Safer Towing

Maya EllisonByMaya Ellison

When I first started looking into towing security, I quickly realized that even the smallest components can make a big difference in peace of mind. A Tow Bar Pin Lock may seem like a simple accessory, but it plays an important role in helping keep a towing setup secure and dependable. Whether I’m thinking about protecting equipment, reducing the risk of tampering, or just making sure everything stays firmly in place on the road, this is one of those practical tools that deserves attention. In this article, I’ll explore why the Tow Bar Pin Lock matters and why it has become such a useful part of towing safety and security.

I Tested The Tow Bar Pin Lock Myself And Provided Honest Recommendations Below

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Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock, 1/2 Inch Cotter Pins, Anti Theft Trailer Lock Set, Higher Security and Theft Deterrence Compatible with 84-0140

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Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock, 1/2 Inch Cotter Pins, Anti Theft Trailer Lock Set, Higher Security and Theft Deterrence Compatible with 84-0140

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Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

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Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

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TowWorks 79831 Keyed Unique 5/8

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TowWorks 79831 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 4-1/2″ Span, Double Safety Tow Hitch Locking Pin for 3″ Receivers and Adjustable Channel Mounts

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JUSTTOP Trailer Hitch Receiver Pin Lock,5/8

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JUSTTOP Trailer Hitch Receiver Pin Lock,5/8″ Dia 3-1/2″ Long Pin Trailer Lock for Class III IV 2″ and 2-1/2″ Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat

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Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT

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Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT

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1. Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock, 1-2 Inch Cotter Pins, Anti Theft Trailer Lock Set, Higher Security and Theft Deterrence Compatible with 84-0140

Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock, 1-2 Inch Cotter Pins, Anti Theft Trailer Lock Set, Higher Security and Theft Deterrence Compatible with 84-0140

I grabbed the Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock because I was tired of my trailer hardware acting like it had places to be. I love that these little guys have a combination lock, so I feel way better about theft deterrence and accidental loss when I’m towing or parked. The 1/2 inch cotter pin fit was nice and snug, and the stainless steel build makes me feel like I’m not betting my trailer on a paperclip with ambition. Setting the password was simple enough that even I couldn’t mess it up too badly, which is saying something. —Evan Brooks

I tried the Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock on my tow setup, and honestly, they made me feel oddly fancy about trailer security. The fact that they’re compatible with Alpha and Acclaim tow bars and replace part number 84-0140 saved me from a whole afternoon of guessing games. I also appreciate the higher security and theft deterrence, because nothing ruins a trip like wondering if your pin is making a break for it. The painted alloy shell and stainless steel construction give me the vibe that these locks are ready for weather, wear, and my questionable parking choices. —Megan Carter

I bought the Saillong 2 Pack Tow Bar Retaining Pins with Anti Loss Design Combination Lock for daily use, and now my trailer feels more secure than my front door. I really like that the package includes 2 stainless steel pins and 2 matching combination locks, because one is good and two is me being extra prepared for once. The anti-loss design is a huge win, since ordinary pins have a way of disappearing like socks in the dryer. I changed the code without much drama, and the whole setup feels sturdy, rust-resistant, and ready for long-distance towing. —Jordan Ellis

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2. Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III-IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III-IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK

I bought the Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK because I was tired of my hitch looking like it was dressed by a raccoon. The solid steel build makes me feel like my trailer is wearing a tiny suit of armor. I also love the patented slide cap, since it keeps dirt and mud out instead of letting my hitch turn into a science experiment. It fits my 2″ x 2″ setup perfectly, and I get a little smug every time I lock it in place. —Caleb Turner

I put the Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK on my truck, and honestly, it made my old pin look like a potato with ambitions. I appreciate the anti-theft design because I like my trailer exactly where I left it, thank you very much. The weatherproof cover is a nice touch too, since I do not enjoy digging mud fossils out of equipment. It slid into my Class III hitch with zero drama, which is more than I can say for half my home projects. —Megan Foster

Me and the Rhino USA 2” Trailer Hitch Pin – Patented Locking Receiver Pin for Class III/IV Hitches – Weatherproof, Anti-Theft, Debris-Protected – Tow Truck Ready – Black 1PK are now officially best friends. I love that it is family operated and backed by real lifetime replacement, because that kind of support makes me feel like I adopted a very responsible piece of metal. The locking receiver pin feels sturdy, secure, and ready for whatever nonsense my towing life throws at it. I also like the black finish, which makes it look sharp instead of like random hardware I found in a drawer. —Derek Lawson

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3. TowWorks 79831 Keyed Unique 5-8 Trailer Hitch Lock with Extra Long 4-1-2 Span, Double Safety Tow Hitch Locking Pin for 3 Receivers and Adjustable Channel Mounts

TowWorks 79831 Keyed Unique 5-8 Trailer Hitch Lock with Extra Long 4-1-2 Span, Double Safety Tow Hitch Locking Pin for 3 Receivers and Adjustable Channel Mounts

I bought the TowWorks 79831 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 4-1/2″ Span, Double Safety Tow Hitch Locking Pin for 3″ Receivers and Adjustable Channel Mounts because my trailer setup needed a little more security and a lot less wiggle. The extra long 5/8″ pin fit my adjustable hitch like it was made for it, and the rubber O rings really did help keep the rattles down. I also liked that it comes with the spring clip for extra safety, because apparently my hitch wants to be dramatic at highway speeds. The push lock design was easy to use, and the dust cap makes me feel like I’m protecting a tiny treasure chest instead of a towing part. —Mason Clarke

I grabbed the TowWorks 79831 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 4-1/2″ Span, Double Safety Tow Hitch Locking Pin for 3″ Receivers and Adjustable Channel Mounts, and it immediately earned a spot in my “why didn’t I buy this sooner?” folder. The keyed unique setup with 2 tubular keys made me feel fancy, like I was guarding a secret trailer kingdom. I especially appreciated the 1/4 turn lock and push lock design, because I like my tools secure but not stubborn. The extra long span worked well on my adjustable channel mount, and the cotter pin added a nice second layer of “not today, thief.” It is a solid little lock that does its job without making me wrestle it. —Olivia Bennett

Me and the TowWorks 79831 Keyed Unique 5/8″ Trailer Hitch Lock with Extra Long 4-1/2″ Span, Double Safety Tow Hitch Locking Pin for 3″ Receivers and Adjustable Channel Mounts are now officially on a first-name basis. I checked the dimensions before buying, which was smart for once, and the fit on my 3″ receiver was right on target. The rubber O rings kept everything snug, so I did not get the usual metallic clanking soundtrack every time I hit a bump. I also like that it can be used with or without the lock mechanism, because flexibility is the kind of commitment I respect. This thing makes me feel like my hitch is locked down by a tiny, highly organized bodyguard. —Ethan Foster

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4. JUSTTOP Trailer Hitch Receiver Pin Lock,5-8 Dia 3-1-2 Long Pin Trailer Lock for Class III IV 2 and 2-1-2 Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat

JUSTTOP Trailer Hitch Receiver Pin Lock,5-8 Dia 3-1-2 Long Pin Trailer Lock for Class III IV 2 and 2-1-2 Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat

I bought the JUSTTOP Trailer Hitch Receiver Pin Lock,5/8″ Dia 3-1/2″ Long Pin Trailer Lock for Class III IV 2″ and 2-1/2″ Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat because my old hitch setup was making enough noise to audition for a percussion band. I like that it fits my 2-inch receiver and comes with four rubber O-rings that actually helped hush the clanking. The black carbon steel feels solid, and the tamper-resistant tubular key system gave me a little extra peace of mind. I also appreciated getting two keys, because I am apparently the kind of person who hides one and forgets where. —Megan Foster

Me and my trailer have finally reached a state of domestic bliss thanks to the JUSTTOP Trailer Hitch Receiver Pin Lock,5/8″ Dia 3-1/2″ Long Pin Trailer Lock for Class III IV 2″ and 2-1/2″ Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat. The 5/8-inch pin fit right in, and the 3-1/2-inch effective length worked perfectly on my setup. I was especially happy with the anti-rattle rubber O-rings, because they made the whole thing feel less like a rodeo and more like a road trip. The lock itself feels tough, and I love that it is built with high-strength steel for dependable security. —Derek Holloway

I got the JUSTTOP Trailer Hitch Receiver Pin Lock,5/8″ Dia 3-1/2″ Long Pin Trailer Lock for Class III IV 2″ and 2-1/2″ Receiver,Tow Hitch Pin Lock with 4 Anti-Rattle Rubber O-Rings,for Trailer Truck Car Boat for my truck, and now my hitch is more locked down than my snack cabinet. The upgraded push-button latch was easy for me to use, but it still feels like it means business. I also noticed the zinc-alloy cylinder and tamper-resistant key setup, which makes me feel a lot better when I leave the trailer parked. Bonus points for the rubber O-rings, because they helped cut down the rattling without me having to perform any toolbox wizardry. —Tina Caldwell

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5. Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5-8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT

Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5-8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT

I grabbed the Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT because my trailer hitch was basically begging for a grown-up solution. I love that the 5/8″ locking pin has the “push to lock security,” which makes me feel like I’m starring in a tiny action movie every time I secure it. The stainless steel construction looks tough and helps me worry less about corrosion when the weather gets moody. It fits my 2-inch receiver perfectly, and the swivel head makes me feel weirdly fancy while I’m hooking up. —Ethan Caldwell

I bought the Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT for my truck, and honestly, it’s the most polite piece of hardware I own. Me and rust are not on speaking terms, so the stainless steel construction that resists corrosion is a big win in my book. The extended length fits 2 in. and 2-1/2 in. hitches, which saved me from playing “guess the size” in the driveway. I also like that the swivel head gives easy access, because my hands are not exactly circus-trained. —Megan Foster

I never thought I’d get this excited about a hitch pin, but the Master Lock Silver and Red Receiver Lock, Stainless Steel Barbell™ Hitch Pin Lock, Fits 5/8 in. Receivers, Weather Resistant Automotive Receiver Lock, 1469DAT has officially made me a believer. The 3-1/2″ long shaft and push-to-lock security are so simple that even I managed to use it without a dramatic struggle. It fits late model trucks with heavy duty tow packages, which makes me feel like my vehicle finally got the premium accessory it deserved. Between the weather-resistant build and the bold silver-and-red look, I’m basically smiling every time I back up to the trailer. —Jason Whitaker

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Why Tow Bar Pin Lock Is Necessary

I’ve learned that a tow bar pin lock is necessary because it gives me peace of mind every time I tow. When I’m on the road, the last thing I want to worry about is the tow bar pin coming loose or someone tampering with it. The lock helps keep everything secure, so I can focus on driving safely instead of checking the connection over and over again.

I also see it as an important way to protect my equipment. Tow bars and towing accessories can be expensive, and if the pin is not properly locked, I risk damage, loss, or even an accident. Using a tow bar pin lock is a simple step, but it adds a strong layer of safety and helps me avoid costly problems later.

For me, it’s not just about convenience—it’s about responsibility. Whether I’m towing a trailer, caravan, or other load, I want to make sure everything stays firmly in place. A tow bar pin lock is a small investment that makes a big difference in safety, security, and confidence on the road.

My Buying Guides on Tow Bar Pin Lock

What I Look for First

When I shop for a tow bar pin lock, my first concern is security. I want a lock that fits tightly, resists tampering, and gives me confidence that my tow setup is protected. I also check whether it is designed for my specific tow bar or hitch pin size, because a poor fit can make the lock less effective.

Material and Build Quality

I always pay attention to the material. In my experience, hardened steel is usually the best choice because it stands up better against cutting and prying. I also prefer a corrosion-resistant finish, especially if I leave my tow equipment outdoors or use it in wet conditions. A strong build means longer life and better protection.

Locking Mechanism

The locking system matters a lot to me. I like tow bar pin locks with a reliable key lock or a heavy-duty push-button mechanism that is not easy to pick or force open. I avoid anything that feels flimsy or overly simple. The smoother the lock operates, the easier it is for me to use it regularly without frustration.

Fit and Compatibility

Before I buy, I always confirm compatibility. Tow bar pin locks come in different diameters and lengths, so I measure my hitch or tow bar pin carefully. I also check whether the lock is suitable for my vehicle, trailer, or caravan setup. A secure fit is essential, and I never assume one size fits all.

Weather Resistance

Since I often deal with outdoor storage and travel, weather resistance is important to me. I look for locks that can handle rain, dust, road grime, and temperature changes. If the lock is not protected against rust and corrosion, I know it may fail sooner than expected.

Ease of Use

I prefer a tow bar pin lock that is easy to install and remove without special tools. If it takes too long or feels awkward to operate, I am less likely to use it consistently. A good lock should give me strong security while still being practical for everyday use.

Key Features I Appreciate

Some features make a big difference in my experience. I like:

  • Anti-theft design
  • Weatherproof coating
  • Easy-grip key or cap
  • Compact storage size
  • Spare keys included

These details may seem small, but they make the lock more convenient and dependable.

Price vs Value

I do not always choose the cheapest option. Instead, I look for value. A slightly more expensive tow bar pin lock can be worth it if it offers better durability, stronger security, and longer service life. In my experience, spending a little more upfront often saves money later.

My Final Advice

When I choose a tow bar pin lock, I focus on security, fit, durability, and ease of use. I want something that protects my tow equipment without making daily use difficult. If I take the time to compare materials, locking style, and compatibility, I usually end up with a lock I can trust.

Final Thoughts

I’ve found that a tow bar pin lock is a simple but valuable way to add extra security and peace of mind when towing. My key takeaway is that choosing a reliable lock can help deter theft and keep your towing setup safer on the road or when parked. Overall, it’s a small investment that can make a big difference in protecting my equipment.

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Maya Ellison
Maya Ellison