ARK Trailer & Tow Bar Coupling Lock Set – Dual Lock Kit with Hitch Pin & Towball Security (SKU: ATL155)

The ARK ATL155 Coupling & Hitch Lock Set offers complete, no-compromise trailer protection — on and off the tow vehicle. Whether your trailer is hitched or unhitched, this 2-in-1 security combo delivers peace of mind with tough, tamper-resistant design and unified key access.

It includes a towball-style coupling lock to secure your trailer from opportunistic theft while parked, and a heavy-duty hitch pin lock (rated to 3500kg) to prevent anyone from detaching your trailer hitch or inserting unauthorized towing equipment.

Both locks are chrome plated for corrosion resistance, and the convenient one-key system means you won’t waste time fumbling with mismatched keys when securing or unlocking your gear.

Key Features:

• Dual security set: Coupling lock + hitch pin lock
• Hitch Pin Rating: Tows up to 3500kg
• Material: Heavy-duty steel with chrome finish
• Convenience: One key fits both locks
• Application: Prevents theft while hitched or unhitched

Common Uses:

• Secure your trailer or caravan when parked at home, at camp, or on a worksite
• Lock your towbar connection to prevent tampering or trailer swap-out
• Perfect for tradesmen, tourers, and off-road travellers

Secure what matters. With ARK’s ATL155 lock set, you’ve got full-circle protection — front to back, hitched or not.

Q1: What does the set include?
It includes 1x trailer coupling lock and 1x hitch pin lock – with one key that fits both.

Q2: Can I use the hitch pin lock for towing?
Yes! The hitch pin lock is rated for up to 3500kg, making it suitable for most heavy-duty towing.

Q3: Is this lock weatherproof?
Yes. The chrome-plated finish resists corrosion and is ideal for outdoor use.

Q4: Can it be used while towing?
The hitch pin lock can be used while towing. The coupling lock is for stationary use only.

Q5: Is it compatible with all trailers and tow bars?
It fits most standard towballs and towbar hitches. Please verify dimensions for specialty couplings.