Best Heavy Duty Towing Hitch Locks in 2026

DIMENSIONS: 9” x 9” x 3”.Material:Steel

BUILT TO LAST: The REESE Towpower Universal Coupler lock is a premium lock constructed with an aluminum body and heavy-duty steel lock bar. Distance between lock shackle holes center to center is 4-1/2 inch

UNIVERSAL FIT: Ratchet design is adjustable with 11 locking positions and fits 1-⅞”, 2”, and 2-5/16” couplers.

DEPENDABLE SECURITY. To protect your trailer and trailer hitch ball mount from theft, this locking hitch pin is made with high-strength steel construction

EASY TO OPERATE. The barbell-style locking hitch pin promotes an impenetrable appearance to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed

VERSATILE. With a 5/8-inch diameter pin and 2.85 inches of usable pin length, this receiver hitch lock fits virtually any 2-inch x 2-inch hitch receiver with a 5/8-inch hole (not compatible with double-walled receiver tubes)

More Convenient with Handle, Compared with other kingpin lock, BOYISEN trailer kingpin Lock add handle and turn cylinder outward instead of downward, it will be more convenient while lock or unlock for 5th wheel under trailer

Keyed Unique, Unlike other trailer lock using flat lock, BOYISEN anti theft trailer lock using blossom lock, come with two keys for your lock only. No worry about another BOYISEN kingpin lock will have the same key.

Heavy Duty construction: This Trailer Lock is made of solid steel instead of casting steel, strong enough for weather resistant, hard to break. The heavy duty steel will add more difficulties for steal drills, and lasts for years.

HEAVY-DUTY TRAILER LOCK: It’s important to do everything you can to protect your belongings and your trailer or camper from being stolen. Our strong coupler lock fits select 2 5/16-inch trailer couplers to help keep your trailer secure.

TOUGH LOCK: The locking parts on this device are constructed from hardened steel for increased security, and the exterior cover is tough enough to stop burglars from using power tools, hammers, and crowbars on your lock.

UNIQUE KEY DESIGN: Our trailer lock has a special key design that prevents anyone from picking the lock. This innovative key system also features an interior locking mechanism that stops would-be thieves from making a copy of your key.

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ANTI-THEFT HITCH PIN - Solid Forged Steel Ensures Protection to Your Trailer & Hitch From Theft

COMMON HITCH SIZES - Our Unique Hitch Pin Fits all Class III & IV Hitches (2" x 2") With Ease.

Trailer hitch lock fits 1-7/8 in. (48mm), 2 in. (51mm) and most 2-5/16 in. (59mm) trailer couplers

Trailer lock is best used for vehicles, trailers, and RVs

Trailer coupler lock features advanced locking mechanism to resist picking and prying

HEAVY DUTY TRAILER HITCH LOCK – It’s a newly upgraded trailer hitch lock with all metal construction. Two tubular keys are included to ensure easy fit and detach.

UNIVERSAL COMPATIBILITY - The trailer hitch locks is designed with a diameter 5/8" and a length of 3-1/2”. It is compatible with class III IV hitches, 2” 2-1/2” hitch receiver, big towing truck and car (Please make sure of the size of the lock or email us for more information before placing an order).

SAFE & EASY TO USE - The core of the hitch lock is made of premium zinc alloy tubular. Its anti-theft design can withstand significant blows from different kinds of external force. Additionally, the lock includes a rubber cap and 8 rubber O-rings, which effectively keeps the keyhole away from dirt, dust, water and prevents any rattling noises.

Molded to fit the specific shape of your trailer or Caravan (RV) 2 5/16 inches coupler when unhitched

Materials used by AMPLOCK provide good rust resistance for use in all climates

Easy to use with AMPLOCK’s push and lock system

Stainless Steel Black finish Flag Metal Embossed Emblem on Metal Trailer Hitch Cover. Fits 2" Receivers.

The Trailer Hitch Cover Made of Carbon Steel, the emblem made of Stainless Steel.

Fits standard 2" trailer hitch receivers, - Comes with Stainless Steel Anti-rattle hitch Pin Black Bolt, Patent # 11,465,45

COMPATIBILITY - Fits most Class III IV and V 2inch receiver hitches with 5/8" pin holes. Not compatible with TG-RK4B102B or TG-RK3B101S Tyger Hitch Mounted Bike Racks.

HEAVY DUTY - Solid barbell black locking pin with 12,000 Lbs load rating. One of the strongest on the market.

WATER & DIRT PROTECTION - Black sliding cap keeps water and dirt out of locking mechanism.

【ANTI-THEFT】 Unlike other hitch pin locks, each lock cylinder is unique and designed by JoyTutus. With solid and heavy-duty No.45 steel construction, adopting a safer zinc alloy lock core and plum blossom keyhole, which can prevent others from towing your trailer away.

【FITMENT TYPE】 Use a tow receiver lock to ensure the towing safety. The locking hitch pin is compatible with hitch rack, cargo hitch tray, bike rack, hitch ball and tow rope, 5/8" pin with 2-3/4" effective length perfect for Class III/IV 2" hitch receiver tubes.[NOTE: The weight load rating for JoyTutus hitch lock, Class III - up to 5,000 pounds, Class IV - up to 10,000 pounds, Class V - up to 17,000 pounds.]

【PREMIUM MATERIAL】 The trailer receiver lock uses black electrophoretic painted carbon steel, solid and hard to bend. 360 degree rotating head, easy to handle. All-weather rubber key slot cap keeps the keyhole away from moisture, dust and rust. Updated tubular key hole, zinc alloy lock core.

Crafted from the highest quality material.Fit Type: Universal Fit

Perfect for outdoor and even indoor use

Made in China

Fits all class III/IV 2"X 2" Receivers

Double chrome plating provides improved wear and corrosion resistance

Foolproof design - won't lock until key is removed

✅FIT: Funmit trailer coupler lock is designed to fit snugly in 1-7/8”, 2”, 2-5/16” couplers and ratchet is adjustable with 11 locking positions. Each ratchet is tightly engaged with the lock body, it will never be pulled open by brute force like other coupler locks!

✅HIGH QUALITY: U-shape trailer lock is made of heavy-duty solid /rigid A36 Steel and aluminum alloy,it's durable, rustproof and weatherproof. Passed QC product quality certification

✅SAFETY: Funmit trailer hitch lock is made of high-quality materials and combines with the last anti-theft technology to ensuresafety,and the U-shape lock can resist picking, prying and drilling

PROTECTION: The Heavy Duty 5/8" Pin locks into your trailer and keeps it secure

VERSATILE: Built to fit most industry standard 5/8" hitch receiver.

WEATHER-RESISTANT: Weatherproof Cap protects the keyhole, keeping out water and grime while keeping the lock rust-free

HEAVY DUTY CONSTRUCTION -- High-strength hardened steel structure, ensures protect your trailer and trailer hitch ball mount from theft

BRASS CORE LOCKING MECHANISM -- Over 15 years of service life,super anti-corrosion.Single key lock design makes it simple to unlock and lock

ALL-WEATHER PROTECTION -- Chromed plating steel for improved wear and corrosion resistance, weatherproof anti-theft lockable pin with dust, mud. Designed to protect your bike racks, trailers, cargo hitch racks, and boats

🔒【UNIVERSAL FIT】 Ratchet design is adjustable with 11 locking positions and fits 1-7/8”, 2”, and 2-5/16” couplers.

🔐【HIGHLY VISIBLE】Use of a bright, deterrent yellow color offers durable, highly visible protection for trailers.

🛡【DEPENDABLE SECURITY】To protect your trailer from theft, this trailer lock is made with an aluminum body and high-strength steel construction, strong cut and shear resistance.

Designed for dropped/untethered trailers. Perfect to secure truck, boat, and RV trailers. Protects expensive cargo stored in a dropped trailer from a would-be thief tractor.

Deflects the fifth wheel plate of a thief tractor. Our lock lock is long lasting and dependable. Lock Exterior: The cast steel King Pin Lock is nearly impenetrable.

WEIGHT: 5.044 lbs DIMENSIONS: 12 × 9 × 2.875. Conical shape. Convenient handle included Made of cast steel

DURABLE, TOUGH DOOR LOCK LATCH: Secures both doors of all semi-trailers by locking the two innermost vertical locking bars together. Easy use, no mounting required.

KEEP YOUR BELONGINGS SECURE: Secures the landing gear hand crank in place preventing the landing gear from being raised.

KEYED SECURITY LOCK: Built in high security barrel lock system or combination lock. Set 4 digit code.

PREVENTS UNAUTHORIZED TRAILER MOVEMENT - The heavy duty king pin lock stops theft of any big rig or RV trailer by preventing the king pin from mating with a 5th wheel. It is physically impossible for the trailer to connect with a 5th wheel while the lock is engaged, and the heavy duty steel lock covers the entire king pin for total security.

HEAVY DUTY CONSTRUCTION - The solid steel cuff and kingpin lock are extremely difficult to defeat and engineered specifically for maximum tamper resistance. The forged locking pin is incredibly strong, and cannot be disengaged without the key to the lock. Each set includes a slide bolt lock and two keys.

STRONG DETERRENT - The last thing a trailer thief wants to see is a heavy duty Vulcan king pin lock. Once the would-be thief sees the lock they will almost always move on to an easier target. Vulcan is known for providing some of the hardest lock systems to defeat in the world, and the king pin lock is no exception.

🔐ADJUSTABLE AND UNIVERSAL: The trailer lock is designed to fit most trailers and caravans with a standard 2" (50 mm) coupler. The ratchet design is adjustable with 11 locking positions.

🔐SECURITY: The tow ball lock is made of heavy-duty steel and has a striking color, which can effectively prevent the trailer from being stolen.The special trailer lock design can also resist drilling, picking and prying,and comes with a set of two keys.

🔐HIGH-QUALITY: The trailer hitch lock is made of aluminum alloy with yellow powder coating. The high-quality materials is sturdy,anti-rusty, corrosion resistant and weather resistant.

DEPENDABLE SECURITY. To protect your trailer and trailer hitch ball mount from theft, this locking hitch pin is made with high-strength steel construction

EASY TO OPERATE. This deadbolt-style locking hitch pin has a heavy-duty look to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed

VERSATILE. With a 5/8-inch diameter pin, this receiver hitch lock fits virtually any 2-inch, 2-1/2-inch or 3-inch hitch receiver with a 5/8-inch hole, making it a perfect fit for most class 3, class 4 and class 5 hitches

❃5/8" HITCH PIN LOCK SET RECOMMENDED FOR - Extra long 5/8" diameter locking hitch pin with maximum active length 3-1/2”, fits Class III,IV,V hitches with 2", 2.5" and 3" receivers.(Please verify you the size of your hitch and get a suitable hitch pin lock)

❃MORE STURDY AND MORE DURABLE - The hitch lock trailer constructed from heavy duty iron and finished with black e-coated to increase the wear resistance and rust resistance. Watertight dust cap can protect the keyhole from water and dirt.

❃COME WITH SPRING CLIP & 5 RUBBER O RINGS - 1. A separate spring clip and 2 holes provide additional safety, 2 clip holes one for 2" x 2" receivers another for 2.5" x 2.5" receivers. 2. Rubber O rings prevent any rattling and hold the hitch pin still.

APPLICATION: With heavy-duty construction and anti-rust surface coating, the hitch pin lock are reliable safety for towing boat, truck, RV and trailer, ensures Trailer & Hitch from theft.

SIZE: The 5/8" diameter locking hitch pin has 3-1/2" effective length perfect for Class III and IV 2" and 2-1/2" hitch receiver tubes. (Please verify the size of the lock pin or email us for more information before placing an order).

EASY TO OPERATE: Can be opened just like opening the door by turning the key, and intimately comes with two keys to prevent the other from being lost.

Maximum security for unattended Pintle hook trailers.Fit Type: Universal Fit

Made from Heavy Duty water resistant metal alloy

Fits 2-7/8" inside diameter

Compatibility: Ratchet design is adjustable with 11 locking positions and fits 1-7/8", 2", and 2-5/16" couplers

Bright yellow color is durable, highly visible, and an essential accessory to all types of trailers

Easy to assemble. Easy and quick to install and remove. Fully adjustable universal fit

FITMENT: Fits most common hitch setups - Both class 2 (1/2-inch) and class 3 (5/8-inch) receivers - For 1-1/4" and 2" receiver length

PURPOSE: Best for vehicles, trailers, and RV hitch locks – Also great for securing a camper, boat, bike rack, or utility trailer – Please check compatibility with your hitch setup before ordering

DURABLE DESIGN: Constructed with heavy-duty stainless steel – Rust-resistant metal – Corrosion resistant – Gray rubber weatherproof dust cover – Deadbolt receiver lock features locking mechanism casing with a smooth black finish – Sturdy angled pins

STURDY & DURABILITY: The Universal Coupler lock is a premium lock constructed with an aluminum body, heavy-duty steel lock bar and brass lock cylinder.

UNIVERSAL FIT: Ratchet design is adjustable with 11 locking positions and fits 1-⅞” (48mm), 2” (51mm), and 2-5/16” (59mm) couplers.

EASY TO USE: Easy-to-install lock in seconds, resists picking, prying and drill outs. Security devices-secure your trailer truck, yellow color makes it easy to see, deter a thief.

DEPENDABLE SECURITY. To protect your trailer and trailer hitch ball mount from theft, this locking hitch pin is made with high-strength steel construction

EASY TO OPERATE. This deadbolt-style locking hitch pin has a heavy-duty look to deter theft, and uses a simple 1/4-turn lock activation for convenient locking and unlocking as needed

VERSATILE. With a 1/2-inch diameter pin and 5/8-inch adapter, this receiver hitch lock fits virtually any 1-1/4-inch or 2-inch hitch receiver, making it a perfect fit for a variety of class 1, class 2, class 3, class 4 and class 5 hitches

⭐Enhanced Security: Ensure a secure connection between your towing vehicle and the trailer with our trailer lock, designed to prevent theft and provide safe towing for Class I, II, III, IV, and V hitches.

⭐Universal Compatibility: The versatile 5/8" (16mm) hitch lock pin fits various hitch receivers and accommodates a wide range of towing applications, with a usable length of 3.74" (95mm) and an adjustable rubber for a customized fit.

⭐Robust Load Capacity: Our trailer hitch locking pin supports a load rating of up to 10,000 lbs, making it suitable for securing both light trailers and heavy-duty equipment, ensuring reliable performance across diverse towing needs.