Zoblise Trailer Hitch Lock 2-5/16" Set — Heavy-Duty Steel Anti-Theft, Weather-Resistant

Zoblise 2-5/16" Trailer Hitch Lock Set is a heavy-duty tongue-lock system that secures standard 2 5/16" couplers to block unauthorized towing and resist common theft methods.

Keep your trailer, RV, boat, or utility gear protected with a purpose-built anti-theft lock pair designed for repeated outdoor use. Constructed from reinforced steel with an upgraded locking core and a weather-resistant powder coat, this set aims to deliver robust security without complicated installation. The kit includes multiple keys and fits most straight-lip and A-frame 2 5/16" couplers, giving you a practical, visible deterrent at storage lots, driveways, campsites, and job sites.

How does this lock prevent someone from towing my trailer?

The Zoblise tongue-lock blocks the coupler opening and anchors across the trailer tongue, preventing a hitch ball from seating and making conventional towing impossible. Its solid-steel body and reinforced lock core increase resistance to cutting, prying, drilling, and hammer attacks.

• Physical barrier stops ball engagement with the coupler.
• Reinforced steel body reduces cutting and sawing risk.
• Upgraded core increases resistance to picking and drilling.
• Visible deterrent discourages opportunistic thieves.

Will this fit my 2 5/16" coupler, and which couplers are not compatible?

This set is made to fit the majority of standard 2 5/16" straight-lip and A-frame couplers, providing a snug, wobble-reducing fit. It is not suitable for Bulldog-style, ring/pintle, 50mm, 1-7/8" couplers, or adjustable specialty couplers.

• Fits standard 2 5/16" straight-lip and A-frame couplers.
• Not compatible with Bulldog, ring/pintle, 50mm, or 1-7/8" couplers.
• Designed for minimal play when properly seated in the coupler.
• Measure your coupler lip to confirm compatibility before purchase.

How quickly can I install and remove the hitch lock?

Installation is tool-free and takes only seconds: slide the lock body under the trailer tongue, align the tongue lock through the coupler opening, then engage the locking mechanism. Removal follows the same simple steps with the included key, so you can secure or release the trailer during loading, storage, or transport prep without delay.

• Tool-free installation — no wrenches or special tools required.
• Simple push-and-lock action for fast setup and removal.
• Two locks and four identical keys included for convenience.
• Compact design that stores easily when not in use.

How does the lock stand up to weather and long-term outdoor use?

A durable powder-coated finish protects the steel body from rust, corrosion, and UV damage so the lock can be used outdoors year-round. The coating, combined with sturdy internal components, helps keep the mechanism functioning after exposure to rain, sun, and cold conditions.

• Powder-coated surface resists rust and corrosion.
• UV-resistant finish reduces paint fading and surface cracking.
• Sealed lock core design limits moisture ingress.
• Built for repeated outdoor cycles in real-world storage conditions.

Who is this for? The Zoblise 2-5/16" Trailer Hitch Lock Set is ideal for RV owners, boat and cargo trailer users, contractors with job-site trailers, and anyone who stores trailers in shared or unsecured locations. If you need a straightforward, heavy-duty deterrent that’s quick to install, weatherproof, and fits common 2 5/16" couplers, this set offers a practical balance of toughness, convenience, and visibility to protect your investment without complex setup.