Vullteeon Trailer Hitch Lock 2025 for 2 5/16"

This adjustable trailer tongue lock secures 2 5/16", 2", and 1 7/8" couplers and works for a range of trailer types including boat trailers, RVs, campers, and utility trailers. It offers fully enclosed coverage of the hitch so the coupling is protected from common tampering methods, and it is useful for users who need a single, adaptable lock for multiple trailers.

Key Points

The lock is designed to cover the entire coupler housing, which reduces access points for tools and prying. According to the manufacturer, the all-around shield makes it harder for thieves to cut or pry through compared to partial locks. It includes three keys and a premium brass core intended to improve pick and drill resistance. 🔒

Adjustment is straightforward with a sliding tongue system that adapts to different coupler thicknesses and shapes. When the coupler is thick, move the cylinder to the far end of the slider; when a tighter fit is needed, set the cylinder to the inner end. The default position fits most mainstream couplers, and the product documentation notes compatibility with some less common styles as well. ⚓

A practical limitation to keep in mind is that extremely unusual or custom couplers may still fall outside the adjustable range. Also, while the outer coating is corrosion-resistant for outdoor use, long-term immersion or exceptionally harsh marine environments can affect any metal lock over many years.

Technical Specifications

• Name: Vullteeon Trailer Tongue Lock
• Material: High-strength carbon steel, 5 mm thickness
• Finish: Corrosion-resistant matte coating for outdoor use
• Compatibility: Fits 2 5/16", 2", and 1 7/8" couplers and bulldog couplers
• Keys included: 3 brass-core keys

Benefits

This lock reduces the need to carry multiple locks for different trailers by covering a range of common coupler sizes. The fully enclosed housing eliminates visible gaps that some thieves use to gain leverage, and the 5 mm steel construction provides substantial resistance to impact and cutting tools according to the manufacturer. The brass core aims to slow down picking attempts and drilling, which can increase deterrence in unattended locations.

Usage Recommendations

For best results, test the lock fit at home before leaving for the road to confirm the slider position required for your coupler. Tighten and check key operation after initial installation to avoid loosening during transit. If you plan to store trailers in saltwater environments regularly, rinse and dry the lock after exposure and apply a suitable lubricant to the brass core periodically to maintain smooth key action and prevent surface corrosion.