About TrailerLock and how we research

TrailerLock.com is an independent guide to trailer security for boat, utility, cargo, RV, horse and gooseneck owners.

How we choose products

• We read manufacturer specifications, fit charts and installation manuals.
• We compare materials, lock mechanisms, weather protection and warranty terms.
• We look for patterns in owner reports and reviews, not single opinions.
• We list prices as approximate ranges from maker sites and recheck them regularly.

We have not lab-tested these locks, and we do not publish invented test scores or star ratings. When we add hands-on photos and testing, we will say exactly what we did.

Independence

We are not affiliated with any lock maker. This domain was used years ago by an unrelated company; we have no connection to JME Products or the Trailer Keeper brand.

See our affiliate disclosure.

What we cover

• Coupler, ball and tongue locks for 1-7/8, 2 and 2-5/16 in couplers.
• Receiver hitch pin and latch locks.
• Wheel locks and boots.
• Gooseneck, 5th wheel and door locks.
• Practical theft-prevention habits for boat, utility, cargo, horse and RV trailers.

Corrections and updates

Products change and prices move. Each guide shows when it was last updated. If you spot a mistake, tell us and include a link to the manufacturer page; we fix verified errors quickly.

Brands we cover

Our guides currently compare locks from Proven Industries, AMPLock, Master Lock, Trimax and Blaylock. Each product card links to the maker page we used, so you can check fit and price yourself before you buy.

Where our facts come from

• Manufacturer product pages for specifications, options and list prices.
• Maker catalogs and user manuals, for example the Trimax catalog and Blaylock installation manuals.
• Maker fit indexes and fit guides for coupler and gooseneck compatibility.

Prices on this site are list prices or approximate ranges seen on maker sites, with the month we checked them. Comparison pages such as AMPLock vs Proven and the Proven review list every source with the date checked.

How the site is funded

Links to makers and retailers are plain links today. Some may become affiliate links in future; if so they will be marked and disclosed, and commissions will not decide our picks. Details are on our affiliate disclosure page.

What is on the site

We publish buying guides by lock type (coupler, hitch, wheel, gooseneck and door locks), guides by trailer such as boat trailers, explainers on sizing and lock styles, and brand comparisons. Every guide shows the month it was last updated.

Privacy

We do not ask you to sign up. We use Google Analytics 4 to see which guides and outbound links are used, and the site is hosted on Cloudflare. See our privacy policy.

Plans

We plan to add our own photos of locks fitted to real couplers and to note exactly how any hands-on checks were done. Until then, nothing on this site claims testing we have not done.