
Coupler Lock
Anti-theft Zero-Gap design. 17-4 stainless pin. Totally tamper-resistant. Keyed-alike with your Titanium Hitch Pin.

Lock the trailer. Trust the tow.
Cheap trailer coupler locks can be easily exploited by thieves. They are frequently made with weak materials like cast aluminum or zinc, making them easy to break with simple tools like hammers or even by melting with a torch. The locking mechanisms are also easily defeated using shims or tension tools. Some locks, even those marketed as "universal," may have a loose fit on certain couplers, creating a weak point.
The PinUltimate Quick-Release Coupler Lock. Has a unique spring-loaded design, is easy to operate and is constructed of 6061 machined aluminum. The anti-theft Zero-Gap heat-treated 17-4 stainless steel pin fits tight and offers maximum corrosion resistance.
100% Designed, machined, and assembled in Manhattan, MT — by the same team that uses the products.
Patented push-button quick-release. Press the thumb button. The cap releases. The pin slides free. So easy you can do it in the dark.
Backed by a Lifetime Warranty plus our 90-day Knuckle-Saver Guarantee. Materials chosen for the job, not the price tag.
Features a premium, built-in locking mechanism that is sealed, ensuring key access even after years in the harshest environments. The bi-directional key works both ways for easy locking.
Allows towing and unhooking without requiring the lock to be engaged (key can be removed in either the locked or unlocked position).

Slide pin through hole in latch and coupler body.

Push coupler body tight against latch.

To lock (optional) insert key and turn 1/2 turn clockwise.

Anti-theft Zero-Gap design. 17-4 stainless pin. Totally tamper-resistant. Keyed-alike with your Titanium Hitch Pin.

Titanium Hitch Pin + stainless Coupler Lock, keyed alike. One key. Everything locked.
Lifetime Warranty · 90-day Knuckle-Saver Guarantee · Made in Montana