RVMATE 5th Wheel Lock, Yellow

RVMATE's 5th Wheel Lock is a heavy-duty steel king pin lock with a bright yellow warning tag that prevents unauthorized coupling and deters theft.

If you store, tow, or park a fifth wheel trailer, securing the king pin is one of the simplest ways to reduce the risk of theft or unauthorized moves. This RVMATE king pin lock is built for visible deterrence and rugged performance: a welded steel body with electrostatic surface treatment, a fluorescent warning tag, and a universal fit for standard 50 mm trailer pins. The design emphasizes ease of use so you can lock or remove it quickly without tools while still presenting a clear message to would-be thieves.

How does this lock stop thieves from towing my fifth wheel?

The RVMATE lock physically blocks the trailer's king pin from engaging with a fifth wheel hitch, preventing a tow truck or unscrupulous actor from coupling to your trailer. Its heavy steel construction resists cutting, prying, and impact attempts, and the large yellow tag provides a strong visual warning that the trailer is secured.

• Fully covers king pin to prevent hitch engagement
• Welded heavy-duty steel resists forced removal
• Bright yellow tag and chain increase visibility day and night

Will this fit my trailer’s king pin?

The lock is sized to accommodate the common 50 mm (approximately 2-inch) diameter king pin and has an overall height and internal diameter designed for universal compatibility with most fifth wheel trailers. Double-check your trailer's pin diameter to confirm fit, but the RVMATE model covers the typical dimensions used across semi-trailers and recreational fifth wheels.

• Internal diameter matches standard 50 mm king pins
• Overall height engineered for secure engagement
• Suitable for trucks, semi trailers, boats with trailers, and containers

How durable is the lock in outdoor conditions?

RVMATE uses heavy steel with a copper core and electrostatic surface treatment to deliver corrosion resistance and long-term outdoor durability. The welded construction and finish reduce rusting, keeping the lock functional through seasons of exposure to rain, salt, and road grime.

• Welded steel construction for strength against tampering
• Electrostatic coating provides weather and rust resistance
• Bright finish resists fading and maintains visibility

How simple is it to install and remove the RVMATE king pin lock?

Installation requires no tools: place the lock over the king pin, insert the key, and rotate 180 degrees to engage the cylinder. Each lock ships with its unique key set for secure operation—keys are not interchangeable between different locks—so keep your key safe or order keyed-alike sets if you need multiple locks to share a key.

• Tool-free installation in seconds
• Turn the key 180 degrees to lock or unlock
• Comes with dedicated keys; store them securely

Who this is for: RVMATE’s 5th Wheel King Pin Lock is ideal for RV owners, fleet managers, truck drivers, and anyone who parks trailers in public or unattended areas and wants a visible, heavy-duty deterrent against unauthorized towing. It fits standard king pins and works well for seasonal storage, overnight parking, or long-term staging of trailers where extra theft-prevention measures are desired.