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Specs are compiled from manufacturer listings and verified buyer reviews and can change over time — please confirm the key details on the product page before buying.
You back up to your trailer, drop the coupler onto the ball, and reach for a pin to lock it all together. If you grab a plain pin, about five minutes is all it takes for someone else to pull it out and drive away with your gear. A locking hitch pin replaces a plain pin with a keyed or combination lock to secure your trailer and accessories.
I’m Min Islam — the founder and writer behind Trending Car. This guide is built by comparing the manufacturers’ published specifications and the patterns across verified customer reviews, so you get each pick’s real strengths and trade-offs instead of marketing spin.
Before you buy another pin, check the receiver size, the pin’s effective length, and how the lock cylinder is protected from road grime. The best locking hitch pin has to fit your hitch, survive weather, and open smoothly every time you tow.
Our Picks at a Glance
How To Choose The Best Locking Hitch Pin
Choosing the right lock starts with measuring your receiver tube size. Most pickups and SUVs use a 2-inch receiver, and heavier trucks step up to 2.5 inches. The pin diameter that fits those is almost always 5/8 inch, which is why nearly every lock on this list is built around that spec.
Different Lock Types
Keyed locks use a cylinder that turns with a physical key, and push-to-lock designs let you seat the pin by hand and save the key for open up. Combination locks swap the key for a 4-digit code you set yourself, which is handy if you keep losing keys. The trade-off is that combination locks can be picked more easily, one reviewer noted, so they mainly keep honest people honest.
Why Anti-Rattle Matters
A loose pin pounds and clanks every time you hit a bump, which grates on you and your passengers. Makers solve this with rubber O-rings that sit around the pin and fill the slack inside the receiver tube. One model comes with 24 O-rings to tune the fit precisely, while others ship with eight, so check the count if a silent ride is your priority.
Quick Comparison
| Model | Best For | Pin Diameter | Lock Type | Weather Protection | Amazon |
|---|---|---|---|---|---|
| METOWARE 5/8″ Stainless★ Best Overall | Rust resistance | 5/8″ | Tubular key | Rubber cap | Amazon |
| OMT 40Cr Steel SetQuietest Towing | Quiet towing | 5/8″ | Twist cap key | Electrophoretic coat | Amazon |
| METOWARE Dual-Pin SetMost Versatile | Multiple hitches | 1/2″ & 5/8″ | Push-to-lock key | Rubber dust cap | Amazon |
| CZC AUTO 5/8″ Stainless | Bike racks | 5/8″ | Push-to-lock key | Rubber key slot cap | Amazon |
| TOWSWELL 2-Pack | Two vehicles | 5/8″ | Push-to-lock key | Black rust-resistant coat | Amazon |
| TRIMAX MAG200 Combo | No keys wanted | 5/8″ | 4-digit combination | Weather cover | Amazon |
| TowWorks Keyed Alike 2-Pack | One key for two locks | 5/8″ | Push lock, keyed alike | Watertight dust cap | Amazon |
| TRIMAX SXT5 Stainless | Class V heavy duty | 5/8″ | 7-pin high security key | Rubber cap & O-ring | Amazon |
In-Depth Reviews
1. METOWARE Trailer Hitch Lock
Our pick — over 4.5★ from 800+ verified ratings; the strongest balance of quality and price.
The rust-proof stainless steel pick that keeps your trailer locked through any weather.
This METOWARE lock earns its top spot because the whole pin is machined from stainless steel, so it stays rust-free even when you leave it exposed to rain, snow, and road salt. The 5/8-inch diameter fits Class III and IV hitches, meaning it handles both 2-inch and 2.5-inch receivers. Owners use it on motorhomes and trailers because the stainless body resists the corrosion that kills cheaper pins.
Security is a strong point. A zinc alloy tubular lock core uses high-security plum blossom keys that are nearly impossible to duplicate, which cuts down theft risk. You push the dog-bone style head in to lock it with no key, then a quick turn pops the pin out automatically when you want to unhitch. The snug rubber cap seals the key slot against water, dirt, and grime so the mechanism stays smooth.
Fit is a key strength. The included eight anti-rattle O-rings let you dial in exactly how tight the pin sits in your receiver, eliminating that annoying clank. One thing to know: it weighs 15.8 ounces, which is heavier than the OMT set’s 13.1 ounces, but that added mass is the stainless steel doing its job. It is noticeably longer than most pins, and some owners found the extra length interferes with safety chain hookup, so check your chain clearance before buying.
What Wins Owners Over
- Solid stainless build feels beefy and strong
- Tubular lock core resists picking and duplication
- O-rings silence rattles on the road
- Auto pop-out pin makes unhitching fast
Watch These Points
- Long body can block safety chain hooks
- Some buyers report surface rust, needing periodic lubricant spray
- Locking mechanism has mixed feedback on smoothness
Reach for this if: you tow often and want a stainless pin that shrugs off weather for years.
Think twice if: your hitch has tight safety chain clearance, since the long body can get in the way.
2. OMT Locking Hitch Pin Set
The vibration-killing 40Cr steel pin that makes long hauls peaceful.
Orion Motor Tech built this lock around one idea: quiet. The 24 O-rings dampen vibrations and cut noise so well that owners with families and pets notice the difference on the highway. The 5/8-inch pin fits 2-inch, 2.5-inch, and even 3-inch receivers, with a 7.8-inch total length and a 4.2-inch effective length that keeps the pin secure with minimal movement.
Install is a slide, twist, and go affair. You push the pin into place, twist the aluminum cap to lock it, and a quick key twist releases it. Owners mention it fits a 2021 Silverado with an easy install, and the extra rubber rings reduce vibration noticeably. The drilled holes plus an R-clip give you triple locking so the pin stays put even under stress.
Weather protection here is different from the stainless METOWARE. Instead of a full stainless body, this pin gets a corrosion-proof electrophoretic coating that resists rust and extreme temperatures. The threaded metal key cover beats rubber caps because it seals tighter, and owners recommend lubing the threads periodically. At 13.1 ounces it is lighter than the METOWARE’s 15.8 ounces, and the package runs 8.66 x 2.24 x 2.05 inches, so it is a touch larger in the box.
Silent by design: 24 O-rings plus a threaded metal cap make this the pick for anyone tired of rattling hardware.
One honest note: durability gets mixed feedback, so keep the threads lubed to avoid seizing.
Best for: trailer owners who want a smooth, silent lock that installs in seconds.
Look elsewhere if: you need a fully stainless pin, since this one relies on a coating for rust protection.
3. METOWARE Trailer Hitch Lock Set
The dual-pin set that covers everything from a 1.25-inch bike rack to a 2.5-inch truck.
You won’t have to guess which pin fits your vehicle—this METOWARE set covers nearly every hitch size. It includes a 1/2-inch pin for Class I and II hitches (the 1.25-inch receivers) and a 5/8-inch pin for Class III, IV, and V hitches (the 2-inch and 2.5-inch receivers). That makes it the obvious pick for households with a truck and an SUV. Customers note it works especially well on 1-1/4 inch hitches, and the extra-long pin clears F-Series, Silverado, Sierra, RAM, and Tundra models without binding.
The push-to-lock design means you press the head until it clicks, no key needed to secure it. The upgraded zinc alloy internal cylinder resists picking, and the whole unit is built from heavy-duty steel that fights manual cutting tools. Each lock comes with a rubber dust cap that blocks rain, snow, and grime, which owners say keeps the key turning smoothly in coastal and snowy areas.
This set weighs 1.28 pounds across both pins, and the package runs 7.44 x 1.73 x 1.57 inches. Buyers consistently rave about the quality and durability, with many calling it a great deal because you get two locking solutions in one box. A recurring caveat: some reviewers point out the locking mechanism can stick, and the lock quantity drew mixed feedback, so test both cylinders before your first trip.
One set, all hitches: two pin sizes make this the Swiss Army knife of trailer security.
Mixed feedback: the locking mechanism occasionally sticks, so keep the keyway clean and lubed.
Pick this if: you switch between a car with a small receiver and a truck with a big one.
skip it if: you only ever use one receiver size, since a single-size lock is simpler.
4. CZC AUTO Trailer Hitch Receiver Lock
The right-angle stainless lock built for tight spaces and bike racks.
If your hitch sits in a tight spot, the CZC AUTO pin’s right-angle head lets you lock it without extra clearance—a real advantage over straight-head pins. Its 3-3/8 inch effective length matches Class III and IV receivers at 2 and 2.5 inches. Reviewers with limited space say the fit is perfect, and it slots cleanly into hitch bike racks, cargo trays, hitch balls, and tow ropes.
Locking is genuinely easy. Push the head until you hear a click, pull to confirm it seated, and the pin locks without a key. Turn the key to open and the pin pops out automatically. The stainless steel body is firm and hard to bend, and the 360-degree rotating head makes handling simple even when the hitch sits at an awkward angle.
At 0.36 kg it is on the lighter side, and the rubber key slot cap keeps moisture and dust away from the cylinder. Owners recommend a quick WD40 spray to prevent the lock from seizing when left outdoors. One noted the plastic cap hinge can be fragile in cold weather, so treat it gently in winter. This lock is simple and well-built, doing its job without fuss.
Space-saver: the right-angle head and short effective length fit where longer pins won’t.
Keep it lubed: owners suggest WD40 for outdoor durability, and the plastic cap needs care in cold.
Reach for this if: you run a bike rack or cargo tray on a 2-inch receiver with tight clearance.
Think twice if: you need a lock for a thicker 2.5-inch receiver with extra-wide tubes.
5. TOWSWELL Trailer Hitch Locks 2-Pack
Two keyed-different locks that secure a truck and trailer without sharing a key.
This TOWSWELL 2-pack gives you two separate locks, each with its own set of two independent keys, so the same key cannot open both. That is ideal if you want a lock on your truck hitch and a different one on your trailer coupler, keeping security separate. Both pins are 5/8 inch, fitting Class III and IV receivers at 2 and 2.5 inches, with a 4-inch span for a secure hold.
The push-to-lock design clicks into place with no key needed, and open up is quick with the included keys. The black rust-resistant coating protects against corrosion, and an all-weather rubber cap keeps the keyhole dry. The 360-degree rotating head adds easy handling, and the carbon steel body resists bending under load.
Shoppers say these locks held up under stress with zero issues, despite feeling light initially. A key limitation surfaced for newer trucks: the shaft is not long enough to pass fully through the factory 2-inch receiver on a 2024 Toyota Tundra or newer 4Runner. Fit gets mixed feedback generally, so measure your receiver depth before ordering. At 1.5 pounds for the pair, it is a solid mid-weight option.
Two for two: keyed-different cylinders mean no master key compromises your security.
Length check needed: owners of newer Tundras and 4Runners found the shaft too short for factory tubes.
Best for: owners who want to secure two hitches and value separate keys for each.
Not for: 2024+ Toyota Tundra or 4Runner owners without checking receiver depth first.
6. TRIMAX MAG200 Resettable Combination Lock
The keyless combination lock that kills the worry of lost hitch keys.
If you are tired of juggling keys for every accessory on your truck, the Trimax MAG200 is a breath of fresh air. It uses a user-settable 4-digit combination, so you set your own code and never carry a hitch key again. Owners who were sick of tracking keys found it much easier to use than keyed locks, and it works flawlessly once set.
The locking wheels sit inside a protective shroud that keeps them clean, and a weather-resistant cover shields the mechanism from dirt and moisture. It fits Class III, IV, and V hitches with a 5/8-inch pin, and the non-corrosive materials resist rust. Resetting the combo takes a few minutes: remove the bolt, twist the body open, align the black dots, and reposition the rings.
Several owners needed to grind the pin longer to fit a 2.5-inch Class V receiver, and one used only 3 of the 4 included rings for the right fit. A few report durability issues, including breakage after heavy miles and some rust, so this is not the toughest lock here. But for sheer convenience and the absence of keys, it is hard to argue with the design.
Ditch the keys: a 4-digit code you set yourself is the whole point here.
Know the limits: owners needed modifications for some 2.5-inch receivers, and a few saw wear over time.
Reach for this if: you hate keys and tow gear that honest thieves would not touch.
Think twice if: you want maximum tamper resistance, since combos are easier to pick than quality key cylinders.
7. TowWorks Keyed Alike Hitch Lock Set
One key that opens both locks, with a 3-1/4 inch span for thick receivers.
TowWorks nailed the convenience factor: both locks in this 2-pack are keyed alike, so one key operates both. The package includes 4 tubular keys, and owners love keeping one in each vehicle, knowing they will always have the right key. The extra-long 5/8-inch pin with a 3-1/4-inch active length fits Class III and IV hitches at 2 and 2.5 inches.
A separate spring clip cotter pin adds a second layer of safety, and you can run the locking pin with or without the lock mechanism engaged. Rubber O-rings keep the pin from rattling, and the watertight dust cap protects the cylinder from corrosion. The push-lock design with a 1/4 turn makes locking and open up straightforward.
Owners praise the heavy-duty steel build and weatherproof performance through rain, snow, and salt. The keyed-alike feature earns particular love. Two honest caveats: the extra length can block thick safety chains, especially on Airstreams, and some owners found open up a little challenging on certain tow vehicles. One noted only two of the four keys actually worked on the locks.
One key, total convenience: keyed-alike cylinders mean you never hunt for the right key again.
Room to consider: thick safety chains can struggle with the long pin body.
Best for: households with two tow vehicles that want one key for everything.
Check first if: you run heavy-duty breakaway chains that may not clear the longer pin.
8. TRIMAX SXT5 Premium Stainless Receiver Lock
The 100% stainless Class V lock with a high-security 7-pin key that resists drill-outs.
Trimax built the SXT5 for those who want the strongest lock money can buy. It is 100% stainless steel, rated for Class V hitches, and uses a Type A spring-loaded 7-pin high-security key that resists attempted drill-outs. The wider 3-1/2 inch span clears the thickest receivers on the market.
Unlike most locks here, the SXT5 has no rust-prone spring. A T-shaped tip rotates to lock the pin in place, and the key stays captive until the lock is fully engaged. The O-ring and protective rubber cap keep water, grime, and dirt out of the mechanism. Buyers report the stainless body lasted six years through rain, snow, salt, and off-road use with only surface rust.
Buyers found it fits a 2012 F150 and newer GM HD 2.5-inch hitches, with a smooth operation once adjusted. The trade-offs are real: some owners found the mechanism hard to operate initially and a few experienced jamming, needing a Dremel to bevel sharp edges. The O-ring alone may not stop all rattling on thinner receivers, so adding rings helps. At 14.4 ounces, it carries genuine heft and confidence.
Built to outlast: stainless steel and a 7-pin key make this the premium pick for serious towers.
Patience required: a few owners needed minor fitting and periodic silicone to keep the lock smooth.
Reach for this if: you want maximum security and a stainless pin that survives years of harsh use.
Think twice if: you want a friction-free experience from the start, since some units need minor fitting.
Understanding the Specs
Effective Length vs Total Length
The total length is the whole pin, but what matters is the effective length—the part that actually passes through your receiver tube. A 3-1/4 inch effective length fits most 2-inch receivers, while thicker 2.5-inch tubes on heavy trucks may need more. Measure your receiver’s tube depth before buying, because a pin that is too short will not reach through and lock on the far side.
Pin Diameter and Receiver Class
Most hitches use a 5/8-inch pin, but smaller 1.25-inch receivers take a 1/2-inch pin. Receiver classes tell you the load rating: Class III handles 2-inch receivers, Class IV and V step up for heavier towing. A pin that fits a Class III hitch will physically fit a Class V receiver, but always match the pin to your actual receiver size, not the class label.
Lock Cylinder Types
Keyed locks use either a standard tubular cylinder or a higher-security 7-pin design. Push-to-lock models let you seat the pin without the key, then use the key only to release. Combination locks replace the key entirely with a 4-digit code. Tubular and 7-pin cylinders resist picking better than basic keyed designs, which matters if theft is a real concern.
Anti-Rattle O-Rings
O-rings are rubber bands that sit on the pin shaft and fill the gap inside your receiver tube. Without them, the pin pounds and clanks on every bump. More rings give you more control over fit—some locks ship with 8, others with 24. You can remove rings or add them to tune the tightness for your specific hitch brand.
FAQ
Will a 5/8 inch locking hitch pin fit my 2 inch receiver?
How do I know if the pin is long enough for my truck?
What does keyed alike mean for a 2-pack of hitch locks?
Is a combination hitch lock more secure than a keyed lock?
How do the anti-rattle O-rings work?
Will a locking hitch pin fit a bike rack or cargo carrier?
How do I keep my hitch lock from rusting or seizing?
Can I use a locking hitch pin on a 1.25 inch receiver?
Final Thoughts: The Verdict
For the majority of shoppers, the locking hitch pin winner is the METOWARE Stainless Hitch Lock because the solid stainless build shrugs off weather and the tubular key core resists picking. If you want a silent ride on long hauls, grab the OMT 40Cr Steel Set with its 24 O-rings. And for households with multiple hitches, the METOWARE Dual-Pin Set covers every receiver size you own in one box. The METOWARE Stainless Hitch Lock holds a 4.7-star rating across 800+ owner reviews, confirming its rust-resistant build.
How We Picked
We do not accept paid placement. Every pick is matched to a real buyer and a real use-case; we do not hands-on test units.
Sources & Methodology
Specifications: manufacturer listings and product documentation. Review insights: verified customer reviews, as of August 2026. Pricing: not shown on this page (it changes often); check the current price via the retailer link.
As an Amazon Associate, Trending Car earns from qualifying purchases. This does not affect which products we feature.