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Master Lock Trailer Hitch Receiver Lock and Coupler Lock Set - 1-1/4" and 2" Hitches

This item can only be shipped to the United States

Kit includes a universal coupler lock to prevent towaway theft; an adjustable latch lock to ensure that your trailer won't be unhooked from the coupler; and a trailer hitch receiver lock that fits 1-1/4" and 2" hitches.


  • Towing kit includes 3 locks for ultimate security
  • Universal-fit coupler lock deters trailer theft by fitting over the coupler, preventing hookup
    • Designed for use when trailer is not in tow
    • Constructed with a laminated, riveted steel frame for strength and durability
      • Center section that fits inside coupler is finned steel - will not warp or bend
  • Coupler latch lock keeps others from releasing your trailer once it is hooked up
    • Stainless steel construction is durable and rustproof
    • Adjustable lock with 6 locking positions fits:
      • 5/8" Latch width - most standard couplers
      • 1" Latch width - most 2-5/16" ball couplers
      • 2" Latch width - most wide-latch ball couplers
  • Trailer hitch receiver lock is used in place of standard pin and clip to prevent theft of ball mount or accessories such as cargo carriers and bike racks
    • Patented, stainless steel swivel head rotates 360 degrees for easy access
      • Brass keyway with aluminum casing conveniently faces toward you, not off to the side
    • Included pins will work with both 1-1/4" and 2" hitch receivers
    • Chrome-plated steel is durable and corrosion resistant
  • All locks have integrated keyhole covers to keep out dirt and moisture
  • 3 Keyed-alike keys and convenient storage bag included


  • Coupler lock fits most 1-7/8", 2" and 2-5/16" ball couplers including:
    • Straight lip, rolled lip and surge brake/hydraulic couplers
    • Reese, Fulton, Valley, Atwood, Shelby, Putnam, Bulldog, Dutton-Lainson and UFP couplers
  • Pin diameter of coupler latch lock: 1/4"
  • Pin diameter of receiver lock: 1/2" and 5/8"
  • Inside pin length of receiver lock (span): 2-3/4"
  • Limited lifetime warranty

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