Best Towing Hitch Locks Under $100 (2026)
We ranked items by a composite value score that weights durability, fit versatility, weather resistance, locking security features, and owner convenience
The Verdict
- Best Overall: Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack — Trailer coupler lock: universal two-pack design for multiple coupler sizes, ideal for owners needing matched protection
- Best Value: BOYISEN 5th Wheel King Pin Lock with Handle — Fifth-wheel kingpin lock: compact handle design that secures kingpins without changing hitch components
This roundup covers reliable towing hitch locks under $100, focusing on coupler, kingpin, receiver pin, and hitch-pin styles suited for trailers, RVs, and towing setups. Picks were chosen by value score using durability, fit range, build materials, and user-focused features such as keyed-alike options and weather resistance
Top Picks
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1
Best Overall Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack
Trailer coupler lock: universal two-pack design for multiple coupler sizes, ideal for owners needing matched protection
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
Fifth-wheel kingpin lock: compact handle design that secures kingpins without changing hitch components
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
Fifth-wheel kingpin lock: straightforward handle lock for securing fifth-wheel trailers with minimal installation steps
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
Receiver pin lock: sturdy 2.5-inch locking pin that secures Class V receivers with a weatherproof finish
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
Fifth-wheel kingpin lock: dependable kingpin security with a user-friendly handle for frequent coupling
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
Keyed Alike 5/8" Trailer Hitch Lock Set (2-pack) with Extra Long 3-1/4" Span
Trailer hitch lock set: keyed-alike 5/8" set with extra-long span for adjustable and deep receivers
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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7
Bolt 5/8" Receiver Lock for Chevy/GMC/Buick/Cadillac
Receiver lock: vehicle-specific 5/8" design with center-cut key convenience for Chevy/GMC/Buick/Cadillac owners
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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8
Rhino USA 3 in Hitch Pin Locking Receiver Pin (Class V) – Weatherproof
Class V hitch pin lock: 3-inch locking pin built for heavy-duty receivers and weather exposure
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
TowWorks 5/8" Trailer Hitch Lock Set for Adjustable Hitches
Hitch lock for adjustable hitches: 5/8" set with extended span to fit adjustable and multi-position hitch setups
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
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10
Master Lock trailer hitch lock for 1-7/8 in to 2-5/16 in
Trailer hitch lock: versatile coupler-to-receiver design with weather-resistant build for common trailer sizes
Vehicle hitch lock fits common trailer couplers with weather resistance and keyed-alike options. Customers note high quality, secure construction, and ease of use, with mixed fit reports for 2-5/16 in couplers
- Multiple coupler compatibility
- Resists rust and corrosion
- Locking mechanism resists picking and prying