Best Towing Hitch Locks (2026 Guide)
We selected products by combining high user ratings with review volume and by evaluating build quality, fit range, and security features relevant to trailer, king pin, and receiver applications
The Verdict
- Best Overall: Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack — Best universal coupler option: durable two-pack that covers 1-7/8" to 2-5/16" couplers for multi-trailer use
- Best Value: BOYISEN 5th Wheel King Pin Lock with Handle — Best for fifth-wheel security: king pin lock with a handle designed for easy install and theft deterrence on RVs
This guide reviews top-rated towing hitch locks chosen for high user ratings and substantial review volume across major retailers. Picks prioritize secure materials, universal fit options, and models commonly used for trailer couplers, king pins, and receiver hitch pins
Top Picks
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1
Best Overall Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack
Best universal coupler option: durable two-pack that covers 1-7/8" to 2-5/16" couplers for multi-trailer use
Universal trailer coupler locks for 1-7/8", 2", and 2-5/16" sizes. Two locks are keyed differently for added security. Bright red finish discourages tampering, and customers note easy on/off and strong construction
- universal size compatibility
- two different keys
- strong build with security-focused finish
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2
Best Value BOYISEN 5th Wheel King Pin Lock with Handle
Best for fifth-wheel security: king pin lock with a handle designed for easy install and theft deterrence on RVs
Solid steel king-pin lock with an outward-facing handle for easy locking/unlocking on 5th wheel hitches. Customers note quick setup, solid build, and secure design that fits king pins well
- outward-turning handle for convenience
- unique keyed security
- sturdy solid steel build
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3
BOYISEN kingpin lock with handle for 5th wheel
Best for simple fifth-wheel protection: handled king pin lock that prioritizes quick installation and solid coverage
Solid steel kingpin lock for 5th wheel hitches and RVs, designed for easier handling with an outward-facing handle. Customers note quick setup, sturdy build, and secure design against theft
- outward-facing handle for easier use
- solid steel anti-theft design
- unique key system to prevent key overlap
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4
Rhino USA Trailer Hitch Pin, 2.5 Inch Locking Receiver Pin
Best for Class V receivers: heavy-duty 2.5" locking hitch pin engineered for strong retention and weather resistance
Solid steel anti-theft hitch pin for 2.5" x 2.5" Class V hitches. Weatherproof and tamper-resistant for secure trailer towing. Customers note solid build and reliable lock, with some finding it slightly short for certain setups
- anti-theft locking mechanism
- weatherproof debris protection
- fits 2.5 inch hitches
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5
BOYISEN 5th Wheel King Pin Lock with Handle
Best RV king pin option: handled king pin lock built for repeated use and straightforward removal at campsites
Solid steel king pin lock for RVs, trailers and campers with an outward-turn handle for easier locking. Customers note quick setup and secure construction that fits 5th wheel hitches
- outward-turn handle design
- unique keyed system
- fits 5th wheel hitches
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6
Master Lock universal coupler locks 1-7/8, 2, and 2-5/16 inches (3 pack)
Best universal coupler set: three-size pack that accommodates common coupler diameters for owners with multiple trailers
Three universal coupler locks fit most 1-7/8
- universal size compatibility
- three locks with unique keys
- bright red finish for visibility
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7
Keyed Alike 5/8" Trailer Hitch Lock Set (2-pack) with Extra Long 3-1/4" Span
Best keyed-alike receiver set: 5/8" lock set with extended span suited for 2" and 2-1/2" receivers requiring matched keys
Lock set for Class III/IV hitches with 2" and 2-1/2" receivers. Extra-long 5/8" pin ensures secure fit and easy push-button operation. Customer note: sturdy build and smooth installation/removal
- extra-long pin for secure fit
- compatible with two receiver sizes
- includes safety features (cotter pin, safety clip)
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8
Rhino USA 3 in Hitch Pin Locking Receiver Pin (Class V) – Weatherproof
Best for Class V heavy loads: 3" locking receiver pin with weatherproofing aimed at full-size towing rigs
Hitch pin and locking receiver pin engineered for Class V (3" x 3") hitches with anti-theft and debris-protection. Durable steel construction and tamper-resistant design for secure trailer connections. Customers note sturdy build and smooth operation, with some compatibility concerns noted by users
- anti-theft locking receiver pin
- fits 3 inch Class V hitches
- weatherproof, debris-protected
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9
Bolt 5/8" Receiver Lock for Chevy/GMC/Buick/Cadillac
Best vehicle-specific receiver lock: 5/8" receiver design that matches many GM hitch receivers for secure fit
Stainless steel 5/8" receiver lock opens with your ignition key, eliminating extra keys. Works with center cut Chevy, GMC, Buick & Cadillac keys; fits 2"-2.5" receivers. Durable construction; praised for ease of use
- Ignition-key integration
- Center-cut key compatibility
- Class 3–5 hitch compatibility
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10
TowWorks 5/8" Trailer Hitch Lock Set for Adjustable Hitches
Best for adjustable hitches: 5/8" lock set built to fit adjustable hitch configurations and provide reliable retention
Locking hitch pin set with 5/8" receiver pin and 4-1/2"/3-1/4" spans; fits most adjustable hitches and some pintle hooks. Easy push-button operation and secure fit for 2.5" receivers
- 5/8" locking pin with extra length
- fits most adjustable hitches
- secure, easy-to-use push-button lock