S5 Coupler Locks: The best security solution for your trailer.
Locks are custom tailored to each trailer coupler's design. Most S5 lock bodies are built with 1/4" structural steel, powder coated using Sherwin Williams powder, and secured with a puck-style lock.

LCS006 - Ram Gooseneck
This lock is designed for Ram gooseneck couplers. Puck Lock is included in price.

LCS006T - Ram Gooseneck
This lock is designed to secure all gooseneck tension/set screws from removal. Puck Lock is included in price.