About Us

When Madco Motorsports' prized race car trailer was stolen right out of their compound, the road map was drawn.

After a disappointing search of existing locks available on the market, the team took the resources of their own innovative machine shop and designed a coupler lock that makes trailer owners feel they have the best lock available to keep their possessions safe. 

When it was apparent Madlock was a superior design, a patent was filed and granted (US Pat. 11667164B2) 

Sales and consumer demands have called for Madlock Trailer Locks LLC to create a company that can continue to supply the demand for RV dealers and consumers across the US and Canada. Madlock is currently manufactured in the USA with the objective of creating more local jobs close to home and keeping quality standards at the highest level.