Trunk Torque Rod

What Is a Trunk Torque Rod?

A trunk lid torque rod is a vital component of your vehicle's trunk system, responsible for assisting in the controlled opening and closing of the trunk lid. These rods, sometimes referred to as trunk torsion bars or torque rods, use torsion or twisting force to counterbalance the weight of the trunk lid, making it easier to lift and ensuring it stays securely closed.

Torsion — or torque — rods have been used to hold open trunk lids for many decades, and generally they do so without problems or failure. Typically, a vehicle uses two torque rods to facilitate opening and closing the trunk, though the two rods can sometimes contact each other, generating unwanted noise and wear over time. Most vehicles route these rods across the width of the trunk opening, with each end connecting to a hinge member on the trunk lid.

Why Trunk Torque Rods Matter

These rods help support the weight of the trunk lid, keeping it open when accessing the cargo area. A failing or broken torque rod is more than a minor inconvenience — the end of a rod can break off where it connects with the hinge, causing the trunk lid to come crashing down. The lifting action these torsion rods provide is substantial, and even losing one of a pair will make the trunk lid feel noticeably heavier and unsafe to operate.

There are typically two rods that run the opening width of the trunk, and their tension can be adjusted using one of several notches in the rod support plate — in many applications, each rod offers three adjustment options. The higher you go on the slots, the more tension (torsion) you put on the rods — the lowest position is weakest, and the top is strongest. This adjustability allows owners to fine-tune how easily the lid opens and how firmly it holds position.

What to Look for When Shopping Trunk Torque Rods

Selecting the correct trunk lid torque rods is essential for maintaining proper operation of your trunk. When choosing a set of torque rods, consider the make and model of your vehicle, as well as any specific requirements for your trunk's weight and size. Replacement torque rods should match the OEM diameter, length, and bend profile of your original part to ensure correct tension and fitment.

Regularly inspect trunk torque rods for signs of damage or wear, and replace them if signs of damage are found. For classic car restorers, sourcing a period-correct replacement with accurate geometry is especially important to preserve both function and originality.

Top Brands for Trunk Torque Rods

When it comes to replacement trunk torque rods for classic American vehicles, Goodmark is the go-to name in the restoration parts market. The company was founded in 1991 by car enthusiasts who recognized that there was a need for quality restoration parts, if the restoration of beloved American classics was to continue. Goodmark uses CAD/CAM software and modern tooling to create parts that are identical to factory original for perfect fit and finish, making their trunk torque rods a reliable choice for restorers who want OEM-accurate replacements. Goodmark has strived to maintain high quality on all restoration parts, whether the project is a Dodge Challenger, Plymouth Barracuda, Chevrolet Camaro, Ford Mustang, classic pick-up, or other classic vehicle.