Best Trailer Hitch Lock of 2026

Last updated on 03/04/2026
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Most Relevant
Most Relevant
Best Choice
1
BULLDOG AW Hitch Lock - AW

BULLDOG AW Hitch Lock - AW

Bulldog
7% Off
Why we love it
  • Exceptional security features offered.
  • Stylish red color stands out.
  • Highly durable for long-lasting use.
Main Highlights
  • Drill and pick resistant
  • Red
Show More
9.7
Exceptional
9.7
Exceptional
Bulldog

BULLDOG AW Hitch Lock - AW

7% Off
Why we love it
  • Exceptional security features offered.
  • Stylish red color stands out.
  • Highly durable for long-lasting use.
Main Highlights
  • Drill and pick resistant
  • Red
Show More
Value for Money
2
Stronghold Hitchlock for Knott Avonride 50mm Trailer Cast Coupling Heads Including 575003, 575004, 575005 and 575008 Sold Secure Gold Standard

Stronghold Hitchlock for Knott Avonride 50mm Trailer Cast Coupling Heads Including 575003, 575004, 575005 and 575008 Sold Secure Gold Standard

Maypole
6% Off
Why we love it
  • Fits most coupling heads.
  • Strong and robust casing.
  • Approved Sold Secure Gold.
Main Highlights
  • Fits most 50mm Avonride cast coupling heads including 575003, 575004, 575005, 575008
  • Suitable for many Ifor Williams trailers and horseboxes, plus Nugent trailers
  • The strong and robust high visibility yellow hardened steel casing with anti-saw features covers the fixing bolts of the hitch to protect it from being stolen
  • Approved by Secured by Design - tested to the high standards set by Secured by Design and meet Police Preferred Specification
  • Approved to Sold Secure Gold standard for trailers - independently tested by the Master Locksmith Association
  • Provides security for a car and trailer when they are parked coupled together e.g. motorway services (NOTE – for safety reasons this product is not recommended for use while towing)
  • Allows use of Avonride integral lock for extra level of security
  • Unique high security patented locking system
  • High security pick-free locks have thousands of possible key combinations and are supplied with 3 keys, plus a key identity tag
  • Water and corrosion proof
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9.6
Superb
9.6
Superb
Maypole

Stronghold Hitchlock for Knott Avonride 50mm Trailer Cast Coupling Heads Including 575003, 575004, 575005 and 575008 Sold Secure Gold Standard

6% Off
Why we love it
  • Fits most coupling heads.
  • Strong and robust casing.
  • Approved Sold Secure Gold.
Main Highlights
  • Fits most 50mm Avonride cast coupling heads including 575003, 575004, 575005, 575008
  • Suitable for many Ifor Williams trailers and horseboxes, plus Nugent trailers
  • The strong and robust high visibility yellow hardened steel casing with anti-saw features covers the fixing bolts of the hitch to protect it from being stolen
  • Approved by Secured by Design - tested to the high standards set by Secured by Design and meet Police Preferred Specification
  • Approved to Sold Secure Gold standard for trailers - independently tested by the Master Locksmith Association
  • Provides security for a car and trailer when they are parked coupled together e.g. motorway services (NOTE – for safety reasons this product is not recommended for use while towing)
  • Allows use of Avonride integral lock for extra level of security
  • Unique high security patented locking system
  • High security pick-free locks have thousands of possible key combinations and are supplied with 3 keys, plus a key identity tag
  • Water and corrosion proof
Show More
3
NiwNiw Heavy Duty Trailer Hitch Lock with Forged Steel Safety Ball Ifor Williams Knott Avonride 50mm Head (575003/575004/575005/575008),High Security Anti-Theft Caravan Tow Bar Coupling Lock

NiwNiw Heavy Duty Trailer Hitch Lock with Forged Steel Safety Ball Ifor Williams Knott Avonride 50mm Head (575003/575004/575005/575008),High Security Anti-Theft Caravan Tow Bar Coupling Lock

NiwNiw
Why we love it
  • Precision fit ensures perfect security.
  • High-visibility design deters thieves.
  • Lightweight yet incredibly durable.
Main Highlights
  • Precision Engineered for Knott 575003/575004/575005/575008 Hear the confident 'click' as it embraces your Knott's 50mm steel ball. No generic adapters – millimeter-perfect alignment for models 575003/575004/575005/575008. Plastic rivals wobble; our forged steel jaws lock like bank vault doors.
  • High-Visibility Deterrent: Your Bolt's Armoured Curtain See the radiant yellow shield defy saws and leverage tools. Machined from 3mm hardened steel, it doesn't hide bolts – parades them as an unconquerable fortress. Thieves bypass guarded Ifor Williams/Nugent trailers instinctively.
  • 30-Second Parked Security (Always Remove Before Towing! Secure car+trailer during breaks faster than ordering espresso. Critical: Detach when driving. All-metal construction laughs at -20°C ice or 40°C heat where plastic fails catastrophically.
  • The Plastic Killer: Forged Steel Endurance Witness brittle competitor locks crack like toys. Our 50mm steel core + CNC-cut armour defies corrosion, prying, and time. Grows smoother with use – like fine machinery honouring its purpose.
  • No-Bulk Fortress: Security That Travels With You Heavy-duty protection surprisingly at home in your glovebox. Designed for Knott 575003/575004/575005/575008 couplings – carries easily despite its uncompromised strength. Sleep knowing thieves face impenetrable metal.
Show More
9.6
Superb
9.6
Superb
NiwNiw

NiwNiw Heavy Duty Trailer Hitch Lock with Forged Steel Safety Ball Ifor Williams Knott Avonride 50mm Head (575003/575004/575005/575008),High Security Anti-Theft Caravan Tow Bar Coupling Lock

Why we love it
  • Precision fit ensures perfect security.
  • High-visibility design deters thieves.
  • Lightweight yet incredibly durable.
Main Highlights
  • Precision Engineered for Knott 575003/575004/575005/575008 Hear the confident 'click' as it embraces your Knott's 50mm steel ball. No generic adapters – millimeter-perfect alignment for models 575003/575004/575005/575008. Plastic rivals wobble; our forged steel jaws lock like bank vault doors.
  • High-Visibility Deterrent: Your Bolt's Armoured Curtain See the radiant yellow shield defy saws and leverage tools. Machined from 3mm hardened steel, it doesn't hide bolts – parades them as an unconquerable fortress. Thieves bypass guarded Ifor Williams/Nugent trailers instinctively.
  • 30-Second Parked Security (Always Remove Before Towing! Secure car+trailer during breaks faster than ordering espresso. Critical: Detach when driving. All-metal construction laughs at -20°C ice or 40°C heat where plastic fails catastrophically.
  • The Plastic Killer: Forged Steel Endurance Witness brittle competitor locks crack like toys. Our 50mm steel core + CNC-cut armour defies corrosion, prying, and time. Grows smoother with use – like fine machinery honouring its purpose.
  • No-Bulk Fortress: Security That Travels With You Heavy-duty protection surprisingly at home in your glovebox. Designed for Knott 575003/575004/575005/575008 couplings – carries easily despite its uncompromised strength. Sleep knowing thieves face impenetrable metal.
Show More
4
Btanadi Trailer Hitch Lock with Forged Steel Security Ball, for Knott Avonride 50mm Coupling Heads (575003/575004/575005/575008), Heavy Duty Hardened Steel Anti-Theft Hitchlock for Trailer Security

Btanadi Trailer Hitch Lock with Forged Steel Security Ball, for Knott Avonride 50mm Coupling Heads (575003/575004/575005/575008), Heavy Duty Hardened Steel Anti-Theft Hitchlock for Trailer Security

Btanadi
Why we love it
  • Forged for maximum strength.
  • Dependable protection everywhere you park.
  • Quick and easy installation.
Main Highlights
  • Compatibility Notice: This hitch lock fits ONLY Knott Avonride coupling heads with model numbers 575003, 575004, 575005 or 575008. Some Ifor Williams trailers use these coupling heads — please check the coupling model number before purchase.
  • Precision Fit for Knott Coupling Heads – 575003, 575004, 575005 & 575008: Precision-engineered to fit Knott 575003, 575004, 575005 and 575008 coupling heads with a tight, stable and anti-wobble connection that helps minimise movement. These Knott coupling heads are commonly found on many Ifor Williams trailers and horseboxes, offering dependable and versatile compatibility.
  • Forged Alloy Steel Security Ball – Stronger, Safer Core Design: The forged alloy steel security ball forms a solid, high-density barrier inside the coupling head, offering far greater strength than lightweight alternatives. This premium forged construction provides long-lasting durability and dependable resistance against interference, giving your trailer a stronger level of protection when parked or stored.
  • Secure Clamp Design for Parked Stability: The clamp holds firmly around the coupling to create a stable, low-movement fit that helps deter interference when your trailer is parked. Whether at home, on the yard or at motorway services, the secure hold offers reassuring day-to-day protection.
  • All-Weather, Corrosion-Resistant Build: Constructed from corrosion-resistant steel with a durable protective coating. Designed to withstand rain, frost, mud and summer heat without seizing, delivering reliable year-round performance in every season and in harsher outdoor conditions.
  • Quick, Push-to-Lock Design for Daily Convenience: The hitch lock installs in seconds with a simple push-to-lock mechanism — no key required to secure it in place. The key is only needed when unlocking the device, making daily use fast, convenient and completely tool-free. Designed for regular towing routines, it offers smooth operation with long-lasting reliability.
  • Safety Notice – Not for Use While Towing: This hitch lock is intended for parked or stored trailers only. It must not be used while towing or during vehicle movement. Always remove the lock before driving to ensure safe and proper trailer operation.
Show More
9.6
Superb
9.6
Superb
Btanadi

Btanadi Trailer Hitch Lock with Forged Steel Security Ball, for Knott Avonride 50mm Coupling Heads (575003/575004/575005/575008), Heavy Duty Hardened Steel Anti-Theft Hitchlock for Trailer Security

Why we love it
  • Forged for maximum strength.
  • Dependable protection everywhere you park.
  • Quick and easy installation.
Main Highlights
  • Compatibility Notice: This hitch lock fits ONLY Knott Avonride coupling heads with model numbers 575003, 575004, 575005 or 575008. Some Ifor Williams trailers use these coupling heads — please check the coupling model number before purchase.
  • Precision Fit for Knott Coupling Heads – 575003, 575004, 575005 & 575008: Precision-engineered to fit Knott 575003, 575004, 575005 and 575008 coupling heads with a tight, stable and anti-wobble connection that helps minimise movement. These Knott coupling heads are commonly found on many Ifor Williams trailers and horseboxes, offering dependable and versatile compatibility.
  • Forged Alloy Steel Security Ball – Stronger, Safer Core Design: The forged alloy steel security ball forms a solid, high-density barrier inside the coupling head, offering far greater strength than lightweight alternatives. This premium forged construction provides long-lasting durability and dependable resistance against interference, giving your trailer a stronger level of protection when parked or stored.
  • Secure Clamp Design for Parked Stability: The clamp holds firmly around the coupling to create a stable, low-movement fit that helps deter interference when your trailer is parked. Whether at home, on the yard or at motorway services, the secure hold offers reassuring day-to-day protection.
  • All-Weather, Corrosion-Resistant Build: Constructed from corrosion-resistant steel with a durable protective coating. Designed to withstand rain, frost, mud and summer heat without seizing, delivering reliable year-round performance in every season and in harsher outdoor conditions.
  • Quick, Push-to-Lock Design for Daily Convenience: The hitch lock installs in seconds with a simple push-to-lock mechanism — no key required to secure it in place. The key is only needed when unlocking the device, making daily use fast, convenient and completely tool-free. Designed for regular towing routines, it offers smooth operation with long-lasting reliability.
  • Safety Notice – Not for Use While Towing: This hitch lock is intended for parked or stored trailers only. It must not be used while towing or during vehicle movement. Always remove the lock before driving to ensure safe and proper trailer operation.
Show More
5
Mottez Trailer Permanent Hitch Lock - A075B

Mottez Trailer Permanent Hitch Lock - A075B

Lifebox
Why we love it
  • Protects against theft effectively.
  • Easy to install and use.
  • Durable design for lasting security.
Main Highlights
  • Allows you to protect the hitch head alone or attached to the vehicle ball against theft
  • Remain permanently on the hitch head
  • Instant lock with push lock
  • The product is not compatible with industrial trailers, caravans or any towing device whose towing ball exceeds 84 mm wide and 63 mm high
  • NOTE: the product is standardized for a trailer of up to 750 kilos according to European standards.
Show More
9.5
Superb
9.5
Superb
Lifebox

Mottez Trailer Permanent Hitch Lock - A075B

Why we love it
  • Protects against theft effectively.
  • Easy to install and use.
  • Durable design for lasting security.
Main Highlights
  • Allows you to protect the hitch head alone or attached to the vehicle ball against theft
  • Remain permanently on the hitch head
  • Instant lock with push lock
  • The product is not compatible with industrial trailers, caravans or any towing device whose towing ball exceeds 84 mm wide and 63 mm high
  • NOTE: the product is standardized for a trailer of up to 750 kilos according to European standards.
Show More
6
Maypole Strongbox Hitchlock Fits Most ALKO, Steelpress and Knott Pressed Steel Hitches on 50mm Drawbars

Maypole Strongbox Hitchlock Fits Most ALKO, Steelpress and Knott Pressed Steel Hitches on 50mm Drawbars

Maypole
7% Off
Why we love it
  • Compatible with various hitch types.
  • Lightweight design for easy handling.
  • Perfect for caravans and light trailers.
Main Highlights
  • Suitable for use with most braked and unbraked hitches on drawbars of up to 50mm. Note: not suitable for raised hitches or hitches fitted with a skid or those with a delta mounting
  • Applications: ALKO AK270 & AK161; AK160A/B; AK300A; Steelpress ZSK-1300C/E/H/K; ZSK-1700B/C/D/E; ZSK-2000B/C; BC-3000.1A/B/C/D Knott KK14-A/B/C; K20-A/B
  • Lightweight and user friendly touring or storage product; ideal for light trailers with pressed steel couplings
  • Fits a straight drawbar rather than an A frame
  • Fits hitched (swan neck and ALKO style towballs only) or unhitched
  • With antiprising lip
  • High security lock with anti-drill feature
  • Helps prevent parking theft when fitted hitched
  • Warning: Do not tow with hitchlock fitted
  • Note: Not suitable for raised hitches, hitches fitted with a skid or those with a delta mounting. Fits only straight drawbar couplings. Does not suit A Frame applications.
Show More
9.3
Superb
9.3
Superb
Maypole

Maypole Strongbox Hitchlock Fits Most ALKO, Steelpress and Knott Pressed Steel Hitches on 50mm Drawbars

7% Off
Why we love it
  • Compatible with various hitch types.
  • Lightweight design for easy handling.
  • Perfect for caravans and light trailers.
Main Highlights
  • Suitable for use with most braked and unbraked hitches on drawbars of up to 50mm. Note: not suitable for raised hitches or hitches fitted with a skid or those with a delta mounting
  • Applications: ALKO AK270 & AK161; AK160A/B; AK300A; Steelpress ZSK-1300C/E/H/K; ZSK-1700B/C/D/E; ZSK-2000B/C; BC-3000.1A/B/C/D Knott KK14-A/B/C; K20-A/B
  • Lightweight and user friendly touring or storage product; ideal for light trailers with pressed steel couplings
  • Fits a straight drawbar rather than an A frame
  • Fits hitched (swan neck and ALKO style towballs only) or unhitched
  • With antiprising lip
  • High security lock with anti-drill feature
  • Helps prevent parking theft when fitted hitched
  • Warning: Do not tow with hitchlock fitted
  • Note: Not suitable for raised hitches, hitches fitted with a skid or those with a delta mounting. Fits only straight drawbar couplings. Does not suit A Frame applications.
Show More
7
Reese Towpower 7088300 Heavy Duty Coupler Lock, Grey

Reese Towpower 7088300 Heavy Duty Coupler Lock, Grey

Reese Towpower
12% Off
Why we love it
  • Built to withstand tough conditions.
  • Universal design fits various couplers.
  • Highly visible, deters potential theft.
Main Highlights
  • BUILT TO LAST: The REESE Towpower Universal Trailer Coupler Lock is a premium trailer lock constructed with an aluminum body and heavy-duty steel lock bar.
  • UNIVERSAL FIT: Towing hitch lock ratchet design is adjustable with 11 locking positions and fits 1-7/8-inch, 2-inch, and 2-5/16-inch couplers.
  • DETERS THEFT: Bright, deterrent silver color is durable, highly visible, and fits all types of travel trailers, providing an essential addition to your RV accessories, utility trailer accessories, and trailer hitch locks.
  • SECURE PROTECTION: Easy-to-install lock resists picking, prying, and drill outs and helps guard against truck or trailer towaway theft in storage.
  • KEYS INCLUDED: REESE hitch lock includes two keys.
Show More
9.1
Superb
9.1
Superb
Reese Towpower

Reese Towpower 7088300 Heavy Duty Coupler Lock, Grey

12% Off
Why we love it
  • Built to withstand tough conditions.
  • Universal design fits various couplers.
  • Highly visible, deters potential theft.
Main Highlights
  • BUILT TO LAST: The REESE Towpower Universal Trailer Coupler Lock is a premium trailer lock constructed with an aluminum body and heavy-duty steel lock bar.
  • UNIVERSAL FIT: Towing hitch lock ratchet design is adjustable with 11 locking positions and fits 1-7/8-inch, 2-inch, and 2-5/16-inch couplers.
  • DETERS THEFT: Bright, deterrent silver color is durable, highly visible, and fits all types of travel trailers, providing an essential addition to your RV accessories, utility trailer accessories, and trailer hitch locks.
  • SECURE PROTECTION: Easy-to-install lock resists picking, prying, and drill outs and helps guard against truck or trailer towaway theft in storage.
  • KEYS INCLUDED: REESE hitch lock includes two keys.
Show More
8
Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

Maypole
10% Off
Why we love it
  • Prevents tow-away theft effectively.
  • Highly visible for added security.
  • Lightweight and easy to store.
Main Highlights
  • Hitchlock for Alko hitches
  • For Alko hitches: AK130, AK160, AKS1300, AKS2004 and AKS3004
  • Immobilises hitch to prevent tow-away theft
  • Highly visible deterrent
  • Strong & robust
  • Lightweight & compact design
Show More
9.0
Superb
9.0
Superb
Maypole

Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

10% Off
Why we love it
  • Prevents tow-away theft effectively.
  • Highly visible for added security.
  • Lightweight and easy to store.
Main Highlights
  • Hitchlock for Alko hitches
  • For Alko hitches: AK130, AK160, AKS1300, AKS2004 and AKS3004
  • Immobilises hitch to prevent tow-away theft
  • Highly visible deterrent
  • Strong & robust
  • Lightweight & compact design
Show More
9
Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

Maypole
10% Off
Why we love it
  • Prevents tow-away theft effectively.
  • Highly visible for added security.
  • Lightweight and easy to store.
Main Highlights
  • Hitchlock for Alko hitches
  • For Alko hitches: AK130, AK160, AKS1300, AKS2004 and AKS3004
  • Immobilises hitch to prevent tow-away theft
  • Highly visible deterrent
  • Strong & robust
  • Lightweight & compact design
Show More
8.8
Excellent
8.8
Excellent
Maypole

Maypole ALKO Hitchlock Suitable for Securing AK130 AK160 AKS1300 AKS2004 AKS3004 Caravan and Trailer Hitches

10% Off
Why we love it
  • Prevents tow-away theft effectively.
  • Highly visible for added security.
  • Lightweight and easy to store.
Main Highlights
  • Hitchlock for Alko hitches
  • For Alko hitches: AK130, AK160, AKS1300, AKS2004 and AKS3004
  • Immobilises hitch to prevent tow-away theft
  • Highly visible deterrent
  • Strong & robust
  • Lightweight & compact design
Show More
10
MSA Heavy Duty Tow Hitch Lock & Keys for Towing Caravan Trailer Security Trailer Lock

MSA Heavy Duty Tow Hitch Lock & Keys for Towing Caravan Trailer Security Trailer Lock

MSA
Why we love it
  • Easy to apply.
  • Visible security solution.
  • Locks securely onto hitch.
Main Highlights
  • KEEP YOUR CARAVAN OR TRAILER SAFE AND SECURE WITH THIS HITCH LOCK
  • VERY EASY TO APPLY AND USE
  • Locks onto the caravan/trailers hitch
  • Visible security that obstructs the tow hitch
  • PLEASE CHECK YOUR TRAILER WILL ACCEPT THIS HITCH BEFORE ORDERING WILL NOT FIT ALL MODELS OF TRAILER AND THIS LOCK DOES NOT LOCK INTO THE BALL THIS COVERS THE COMPLETE TRAILER HITCH, PLEASE NOT THIS LOCK CANNOT BE USED WHEN TOWING A TRAILER) Please Note This hitch lock is not suitable for Avonride/Alko/Winterhoff hitches. Also it will not fit the normal or modified hitches with stabilizing mechanism.
Show More
8.7
Excellent
8.7
Excellent
MSA

MSA Heavy Duty Tow Hitch Lock & Keys for Towing Caravan Trailer Security Trailer Lock

Why we love it
  • Easy to apply.
  • Visible security solution.
  • Locks securely onto hitch.
Main Highlights
  • KEEP YOUR CARAVAN OR TRAILER SAFE AND SECURE WITH THIS HITCH LOCK
  • VERY EASY TO APPLY AND USE
  • Locks onto the caravan/trailers hitch
  • Visible security that obstructs the tow hitch
  • PLEASE CHECK YOUR TRAILER WILL ACCEPT THIS HITCH BEFORE ORDERING WILL NOT FIT ALL MODELS OF TRAILER AND THIS LOCK DOES NOT LOCK INTO THE BALL THIS COVERS THE COMPLETE TRAILER HITCH, PLEASE NOT THIS LOCK CANNOT BE USED WHEN TOWING A TRAILER) Please Note This hitch lock is not suitable for Avonride/Alko/Winterhoff hitches. Also it will not fit the normal or modified hitches with stabilizing mechanism.
Show More