The best trailer lock of 2024

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Whether you’re hauling a trailer or boat with your pickup truck or SUV, you’ll need to make sure you have a sturdy trailer lock. If you don’t take steps to secure your trailer then it could attract attention from potential thieves. A good trailer lock can help keep your cargo safe, giving you peace of mind whenever you’re hauling cargo. Most of these locks attach to the pin on your coupler or wrap tightly around it to restrict access to the ball. Here are the best trailer locks that are for sale on Amazon.

Retrue Universal Coupler Lock 1

$12.99 at Amazon

This Retrue trailer coupler lock is one of the more affordable options for a trailer lock that is a fraction of the cost of its competitors. It has an aluminum body and A36 stainless steel construction. It’s resistant to dust and inclement weather conditions and will last a long time. A 120-day warranty and a 100% return for quality issues is included with your purchase.

Key features

  • Compatible with 1⅞”, 2” and 2-5/16”
  • Affordable
  • 11 locking positions
  • 2 keys included
  • 120-day warranty

Rhino USA Trailer Hitch Lock 1

$25.90 at Amazon

The Rhino USA Trailer Hitch Lock has a unique anti-theft hitch pin made from solid forged steel that fits Class III and Class IV 2” x 2” hitches. Rhino USA products come with a lifetime warranty.

Key features

  • #1 best-selling Towing Hitch Lock on Amazon
  • Patented ⅝” locking receiver
  • 2” x 2” receivers
  • Sliding lock cover
  • Weatherproof
  • Dirt, mud and gunk protection

Reese Towpoer Heavy Duty Coupler Lock 1

$38.09 at Amazon

This Reese Towpoer Heavy Duty Coupler Lock will guard your trailer from towaway theft and has a pick-proof square key design to keep your belongings safe. The bright silver color makes it easy to see and can act as a visual deterrent for potential thieves.

Key features

  • Fits 1-⅞”, 2” and 2-5/16” couplers
  • Secures trailer when to being towed
  • 2 theft-proof square keys included
  • Ratchet design

Master Lock Universal Coupler Lock 1

$28.70 at Amazon

Master Lock makes all types of locks for almost every occasion. This universal coupler lock features an advanced locking mechanism that offers strong resistance to picking and prying. Red is a very loud color and the lock being bright red makes it easier to see from a distance and should make thieves think twice before approaching it.

Key features

  • Compatible with most 1-⅞” and 2-5/16” trailer couplers
  • Rust-resistant
  • Corrosion-resistant
  • Easy to install and remove
  • Limited lifetime warranty

Trimax Premium Universal Dual-Purpose Coupler Lock 2

$65.15 at Amazon

This Trimax Premium Universal Dual-Purpose Coupler Lock has ballistic-grade nylon housing that can withstand blows from a hammer while offering resistance to harsh weather. This lock comes with a Type A Key that is spring-loaded and won’t bend or break.

Key features

  • Compatible with 1-⅞”, 2” and 2-5/16” 
  • Fits all coupler types
  • Type A key
  • Weather-resistant

How to choose the right trailer lock

Before purchasing a lock for your trailer, make sure you know the size of the ball or hitch on your trailer to make sure it’s compatible.

How to attach a trailer lock

Before preparing to install a lock to your trailer, make sure you’ve gone over the instructions thoroughly and that your lock will fit. Installation will vary depending on the type of lock you choose. Here is an in-depth video tutorial on how to install a Rhino USA trailer locking hitch pin.

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