PICURA Trailer Lock for 2-5/16" Couplers — Heavy-Duty Hardened Steel, Corrosion-Resistant

PICURA's trailer lock is a heavy-duty, weatherproof coupler lock engineered exclusively to secure 2‑5/16" trailer couplers with a tamper-resistant brass core and hardened-steel body.

When you park your boat, RV, or cargo trailer, the hitch is often the most vulnerable point. This PICURA lock is tailored to fit 2‑5/16" couplers precisely, blocking common theft methods while standing up to outdoor conditions. It combines a reinforced steel exterior with an internal brass cylinder and a corrosion-resistant finish so you can leave your trailer with greater confidence.

How does this lock fit 2‑5/16" couplers securely?

The lock is shaped and sized to mate tightly with 2‑5/16" trailer couplers and prevent movement that could allow prying or levering. It is not compatible with 2" couplers, so measuring your coupler diameter before purchase is essential.

• Precision fit for 2‑5/16" couplers to eliminate gap play.
• Hockey-puck style profile covers the latch area to block access.
• Quick slide-on installation for fast locking and removal.
• Not designed for 2" couplers—measure first to ensure compatibility.

What makes the lock hard to tamper with or break?

A hardened steel outer shell resists cutting, prying, and blunt-force attacks while a brass lock cylinder inside resists picking and drilling. The compact, shielded design hides critical components from bolt cutters and direct impact tools.

• Hardened steel body built to withstand cutting and leverage attempts.
• Internal brass core resists picking and drilling techniques.
• Shielded locking mechanism minimizes exposure to attack tools.
• Includes three keys so you always have a backup if one is misplaced.

Will this lock hold up outdoors and in salty or snowy climates?

Yes, the lock is finished to resist rust and corrosion so it keeps functioning in wet, salty, or freezing environments. Low maintenance and durable, it’s intended for long-term outdoor storage and regular use in varied weather.

• Corrosion-resistant coating protects metal surfaces from rust.
• Designed for reliable operation in rain, snow, and coastal conditions.
• Minimal upkeep—wipe clean and lubricate the keyway occasionally.
• Durable under temperature extremes commonly encountered in storage lots and marinas.

How easy is it to install and remove when you're ready to tow?

The lock installs quickly without tools: slide it onto the coupler latch area, turn the key, and you’re secure. Removal is just as fast—unlock, pull off, and you can couple the trailer in seconds, saving time at trailheads, docks, or storage facilities.

• Tool-free installation—no pins or extra hardware required.
• Smooth key operation designed for quick locking and unlocking.
• Compact form factor avoids interfering with normal hitching when removed.
• Three keys included so you have spares for truck, home, or toolbox.

Who is this for: PICURA's 2‑5/16" coupler trailer lock is for boaters, RV owners, and commercial or personal trailer users who need a rugged, low-maintenance security solution for outdoor storage and transient parking. If you own a trailer with a 2‑5/16" coupler and want a robust deterrent against theft—without complex setup—this lock delivers a purpose-built, weatherproof option that balances convenience with heavy-duty protection.