Don't let this be the second lock you buy.
The Best Lock at Any Price.
- Stop trailer theft before it happens.
 - Simple to use, impossible to break.
 - Built in the USA with a lifetime warranty*.
 
Madlock's patented one piece, All-Metal design, makes a user friendly lock which is quick & easy for anyone. Simply slide over the trailer coupler, lift the lock, insert and turn the key. Your trailer is now secure!
                - 
        
2-5/16" Ball Madlock Trailer Coupler Lock
      - Regular price
 - $293.00
 - Sale price
 - $293.00
 - Regular price
 - 
        
 - Unit price
 - per
 
Sold out - 
        
2" Ball Madlock Trailer Coupler Lock
      - Regular price
 - $293.00
 - Sale price
 - $293.00
 - Regular price
 - 
        
 - Unit price
 - per
 
Sold out - 
        
2" Boat Trailer Lock "Square Nose"
      - Regular price
 - $363.00
 - Sale price
 - $363.00
 - Regular price
 - 
        
 - Unit price
 - per
 
Sold out 
Madlock is Different:
              Unmatched Security:
Patented design with hidden locking mechanisms deters theft attempts.
              Heavy-Duty Lightweight Champion:
Compact and easy to handle at only 3 pounds, making it user-friendly for everyone.
              Simplicity is the Magic:
No complex instructions needed, anyone can install Madlock Trailer Lock in seconds.
              Unique Design:
Unlike bulky, complex locks, Madlock Trailer Lock is lightweight, easy to use, and features a hidden, impenetrable locking mechanism.
              American-Made Quality:
All-Metal. Built with American steel and a commitment to quality craftsmanship.
              Lifetime Warranty:
We believe in our product. If you experience a mechanical failure, we'll replace your lock.