Top 4 Best Locking Hitch Pin For Secure Towing

The best locking hitch pin in 2025 is the AMP Lock U-HLP58318, a heavy-duty, theft-resistant pin designed for maximum trailer security. But depending on your setup and budget, other great options may suit you better. 

In this guide, we’ve rounded up the top 4 hitch pin locks, outlining their pros, cons, and what makes each one stand out.

1. AMP Lock

With a key system offering nearly one million possible combinations, AMP Lock delivers both strength and advanced security features for peace of mind on the road.

Pros

✅ High security: Advanced locking mechanism and anti-theft swivel design resist picking, drilling, and tampering

✅ Durability: Built from stainless steel to withstand weather, corrosion, and physical force

✅ Ease of use: Push-and-lock mechanism simplifies the locking process

✅ Advanced key system: High-precision key lock with nearly 1 million possible combinations enhances protection

Cons

❌ Weight: The heavy-duty steel construction adds noticeable weight, which may not be ideal for all users

2. Vault Cargo

Vault Cargo offers a locking hitch pin designed to secure trailers and hitch-mounted accessories. Constructed from durable materials, it features a zinc alloy tubular lock core with anti-theft technology, providing a balance between security and ease of use.

Pros

✅ Ease of use: Simple locking mechanism allows for quick installation and removal.

✅ Weather resistance: Dust cap protects the keyhole from moisture and debris, reducing the risk of corrosion.

✅ Affordability: Priced competitively, offering a cost-effective solution for securing hitch-mounted accessories.

Cons

❌ Limited security features: Lacks advanced anti-theft mechanisms found in higher-end models.

❌ Material durability: While functional, the materials may not withstand prolonged exposure to harsh environmental conditions as effectively as premium options.

3. Trimax

Trimax is a well-established brand in the trailer security industry, offering a wide range of hitch pin and coupler locks designed for various towing needs. Their products are known for robust construction, user-friendly features, and affordability.

Pros

✅ Steel lock: Made from solid hardened steel for enhanced durability and resistance to tampering

✅ Univesal firt: Designed to fit a wide range of coupler sizes, offering versatility for different trailers

✅ Weather-resistant: Features corrosion-resistant finishes to withstand various environmental conditions

✅ Easy installation: User-friendly design allows for quick and straightforward installation

✅ Affordable pricing: Offers a balance between quality and cost, making it accessible for many users

Cons

❌ Key issues: Some users have reported problems with keys breaking or becoming difficult to turn over time

❌ Fit variability: Despite being labeled as universal, certain models may not fit all coupler types snugly, leading to potential security concerns

❌ Weather-related performance: Exposure to extreme cold can cause the locks to freeze, making them challenging to unlock

❌ Durability concerns: Some customers have experienced rusting and chipping over time, indicating potential issues with long-term durability.

4. Bolt Lock

The Bolt Lock is a versatile and user-friendly hitch pin lock designed to enhance trailer security while simplifying key management. Manufactured by STRATTEC, a leading OEM lock supplier for major automotive brands like Ford, GM, and Chrysler, the Bolt Lock stands out for its innovative one-key technology. 

Pros

✅ Convenience: Eliminates the need for extra keys by using your vehicle's ignition key

✅ Security: Features a double ball-bearing locking mechanism and plate tumbler sidebar to prevent picking and bumping

✅ Durability: Stainless steel construction and lock shutter protect against corrosion and debris

✅ Warranty: Comes with a limited lifetime warranty, reflecting confidence in product longevity

✅ Customer support: Responsive customer service, with reports of quick issue resolution without requiring purchase proof

Cons

❌ Compatibility: Not available for all vehicle makes and models; users should verify compatibility before purchase

❌ Price: Priced higher than some traditional hitch pin locks, which may be a consideration for budget-conscious buyers

Understand The Basics of Hitch Pin Locks

Why You Need A Locking Hitch Pin

We all want to keep our trailers safe and secure. That’s where locking hitch pins come in handy. These devices offer excellent security benefits by deterring theft and keeping your trailer firmly attached to your vehicle.

The best locking hitch pins feature robust construction, typically made from hardened steel. This material choice ensures durability and resistance to tampering. You’ll find that quality pins often have a keyed locking mechanism, adding an extra layer of security.

By using a locking hitch pin, you significantly reduce the risk of someone easily detaching and stealing your trailer. These pins are designed to withstand various attempts at removal without the proper key. This added security gives you peace of mind whether you’re parked at home or on the road.

How Locking Pins Compare To Standard Pins

Locking pins offer superior security compared to standard pins. They’re built to last, with many featuring corrosion-resistant coatings that extend their lifespan. While they may cost more upfront, the added protection for your trailer and peace of mind are well worth the investment.

Standard pins, on the other hand, are quick to insert and remove. However, this ease of use also makes them vulnerable to theft. They’re often made of regular steel, which can rust over time, especially if you’re towing in harsh conditions.

For serious towing work, locking pins are the way to go. They fit securely in the key hole and won’t rattle loose during travel. Many are designed to work with multiple trailer classes, adding to their versatility.

How to Choose The Receiver Size For Your Hitch Pin Lock?

Matching 2", 2.5", And 3" Receivers

  • 2" receivers typically handle up to 10,000 lbs, 2.5" up to 20,000 lbs, and 3" up to 30,000 lbs or more 
  • Accurate measurement of your receiver hitch is crucial for proper fit and security 
  • Ensure compatibility between your tow vehicle’s receiver and the hitch pin lock you select 
  • Some receiver locks come in coupler lock sets (keyed alike) for convenience across multiple sizes

Ensuring Proper Fit For Trailers

  • Measure the pin diameter of your trailer coupler to match with the correct lock size 
  • Check the required pin length, accounting for any additional thickness from the lock body 
  • Verify that the locking mechanism engages fully when installed on your specific trailer setup 
  • Consider a combo pack that includes both a receiver lock and coupler lock for complete protection

How To Measure Correctly

  • Use a tape measure or caliper for precise measurements of your receiver opening and pin holes 
  • Measure both the width and height of the receiver tube to confirm the exact size category 
  • Check the distance between pin holes to ensure proper lock engagement 
  • Test the fit with the actual lock before hitting the road to guarantee a secure connection

Get Your New Trailer Hitch Lock Today!

Worried about trailer theft? We’ve got you covered. Our high-quality locks, made from North American ductile iron and stainless steel, offer unbeatable protection. With patented designs and expert-tested strength, AMP Lock keeps your trailer safe in any situation. Try our locks risk-free with free shipping and returns.

Frequently Asked Questions About Locking Hitch Pin

Do I Need A Separate Lock For My Coupler?

Yes, you should use a separate lock for your coupler. While built-in locks offer convenience, they often lack the strength of dedicated devices. Independent tests show standalone locks resist tampering up to 30% better than integrated options. Some coupler designs have weak points thieves can exploit. 

Adding an extra lock creates another obstacle, significantly reducing theft risk. To choose the right lock, measure your coupler, select a sturdy model that fits snugly, and follow the manufacturer’s installation guide for optimal security.

Can I Use The Same Pin For Multiple Tow Vehicles?

Using one pin across different vehicles is possible, but requires careful consideration. Pin sizes vary based on receiver dimensions and towing capacities. Always check your vehicles’ towing classes and consult owner manuals for specific requirements. Ensure the pin fits securely in each receiver without wobbling. 

Verify that the lock mechanism works smoothly on all vehicles. Most importantly, confirm the pin’s load rating exceeds the highest capacity among your towing setups to maintain safety across all uses.

Will Weather Exposure Affect My Lock’s Performance?

Weather can impact your lock’s function and lifespan. Rain, snow, and salt air may cause rust or binding mechanisms. To protect your investment, apply a silicone-based lubricant monthly. Use a weather-resistant cover when not in use. Quality locks withstand 500 hours of salt spray testing without failure. 

Inspect your lock regularly for signs of wear. Clean it after exposure to dirt or grime. Store the key separately from the lock to prevent moisture transfer. Following these steps will help maintain your lock’s reliability in various conditions.