Best Towing Hitch Locks Under $100 (2026)
We selected products under $100 by value score using materials, fit range, security features, user-reported durability, and brand track record
The Verdict
- Best Overall: Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack — Universal coupler lock: two-pack option that secures common 1-7/8"–2-5/16" couplers for flexible trailer coverage
- Best Value: BOYISEN 5th Wheel King Pin Lock with Handle — Fifth-wheel kingpin lock: compact handle design that blocks kingpin engagement for RV and camper security
This roundup covers towing hitch and trailer locks under $100, focusing on receiver pins, coupler locks, and fifth-wheel kingpin locks that improve theft deterrence and on-road security. Selections were ranked by a value score combining build materials, fit options, security features, and verified customer feedback
Top Picks
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1
Best Overall Master Lock universal trailer coupler locks (1-7/8", 2", 2-5/16") 2-pack
Universal coupler lock: two-pack option that secures common 1-7/8"–2-5/16" couplers for flexible trailer coverage
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 blocks kingpin engagement for RV and camper security
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, rugged locking handle that prevents trailer-to-tractor coupling
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 locking pin: 2.5" class-V pin built for heavy-duty receivers with a locking head for theft deterrence
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: durable kingpin protection with an ergonomic handle to hinder unauthorized hookups
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)
Universal coupler lock: three-pack providing coverage for multiple coupler sizes to secure several 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
Trailer hitch lock set: keyed-alike 5/8" pins with an extra-long span for adjustable and common receiver setups
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
Class-V hitch pin lock: 3" locking receiver pin designed for larger trailers with weather-resistant finishing
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
Receiver lock for GM vehicles: 5/8" design matched to common factory receivers with a center-cut key system
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
Adjustable hitch lock set: 5/8" pins tailored for adjustable hitches and long-span applications
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