Infinite Rule Security Coupler & Ball Mount Locks

Infinite Rule Security: Precision-Fit Coupler & Ball Mount Locks

When it comes to securing your trailer at the coupler or ball mount, a generic, one-size-fits-all lock is rarely good enough. Infinite Rule Security was built on exactly that premise. Founded in 2012 by Brad Mateko — who couldn't find a proper security solution for his own vehicle — the company set out to engineer locks that fit specific applications rather than settle for loose, rattling universal alternatives. That philosophy is nowhere more evident than in their lineup of Coupler & Ball Mount Locks.

Application-Specific Fitment: The Infinite Rule Difference

What separates Infinite Rule Security from the competition in this category is an almost obsessive commitment to precision fitment. Infinite Rule Security is the only company manufacturing trailer latch locks designed to fit specific trailer coupler styles and manufacturers. Rather than offering a handful of vague "fits most" options, their coupler lock catalog covers nearly every common trailer latch style — from the ubiquitous Straight Tongue with Posi-Lock to manufacturer-specific designs built for popular brands across the boating, RV, and equipment-hauling industries.

The size range alone sets Infinite Rule apart. Their locks are available in an unmatched array of span widths — including 3/4", 1-5/8", 2-1/8", 2-3/8", 2-5/8", 2-15/16", and 3-1/8" — alongside multiple depth options. This extensive lineup means there is a right-fit solution for virtually any trailer latch on the market, whether light-duty, heavy-duty, or specialty equipment.

Built Tough, Built in America

Every Infinite Rule Security coupler and ball mount lock is 100% designed, engineered, and manufactured in the USA at the company's family-owned facility in Oxnard, California. Construction relies on premium stainless steel for superior corrosion resistance, and each lock features a weatherproof rubber cap with an O-ring seal to keep water, grime, and dirt away from the keyhole — a critical detail for locks that live outside in all conditions.

Third-party strength testing backs up the durability claims, and Infinite Rule holds three design patents reflecting their commitment to innovation in the trailer security space. Their award-winning lock designs have earned recognition at the SEMA Show, underscoring the brand's standing among serious towing enthusiasts and professionals alike.

Keyed-Alike Convenience Across Your Entire Setup

One of the most practical features Infinite Rule Security brings to the coupler and ball mount lock category is their keyed-alike system. All locks purchased in the same order are keyed alike, meaning one key can operate your coupler lock, receiver lock, hitch pin, and any other Infinite Rule locks in your setup. This eliminates the frustrating key-ring juggle that plagues mixed-brand security systems and makes life easier whether you're launching a boat, hooking up an RV, or hauling work equipment.

Who Should Consider These Locks?

Infinite Rule Security's coupler and ball mount locks are an ideal choice for boaters, RV owners, horse trailer operators, and professional haulers who need security that fits their specific coupler — not just something that "works" in a pinch. With 29 products in this category and deep coverage of coupler styles and sizes, finding the exact right lock for your trailer is straightforward. Explore the full Infinite Rule Security brand page for their complete lineup of trailer security products, or browse all Coupler & Ball Mount Locks to compare options across the category.