Tamiya Tractor Truck Trailer Coupler Lock TTT-56505-04-S by Jazrider  [TTT-56505-04-S]

Precision coupler lock for Tamiya Tractor Truck models

This replacement coupler lock from Jazrider, model TTT-56505-04-S, is an RC-scale accessory intended for use with Tamiya Tractor Truck models. Machined in silver aluminum, the component replaces common plastic or stamped couplers to offer a firmer, longer lived connection between tractor and trailer on scale rigs.

The part's role is simple but important: lock the trailer coupling, cut down play at the hitch interface, and support changes to setup during chassis tuning. It purposely avoids asserting compatibility with specific chassis outside the Tractor Truck family; confirm fit on your exact model before fitting.

Experienced hobbyists will find installation straightforward after checking mount points and confirming the factory hole pattern. The coupler lock is intended to sit in the existing coupling area and operate within standard RC-scale coupling arrangements without modifying drivetrain or suspension components.