When it comes to off-roading and vehicle suspension systems, traction bars and trac bars are two common components that are often mentioned. While both are designed to improve your vehicle’s performance, they serve different purposes and are used in different ways. In this article, we will discuss the key differences between traction bars and trac bars to help you better understand their roles in your vehicle’s suspension system.
Traction bars, also known as ladder bars, are primarily designed to prevent axle-wrap and improve traction. Axle-wrap occurs when the torque from the engine causes the axle to twist, binding the U-joints and deforming the leaf springs. This can lead to suspension damage and reduced vehicle performance. Traction bars help combat this issue by:
- Preventing the pinion from rising, which causes axle-wrap
- Allowing the suspension to flex without causing spring wrap
- Improving traction and reducing the risk of broken components
Traction bars are often used in vehicles with leaf spring suspension systems, particularly those that have been modified with larger tires, lower gears, or more powerful engines. They are typically mounted to the axle and frame of the vehicle, with a pivoting shackle at the forward end to allow for suspension flex.
Trac bars, also known as Panhard bars or track bars, serve a different purpose. Their primary function is to prevent lateral movement of the axle, ensuring that it remains centered under the vehicle. This is particularly important for vehicles with coil spring suspension systems, where lateral axle movement can lead to unpredictable handling and reduced stability.
Trac bars work by:
- Connecting the axle to the vehicle’s frame on the opposite side
- Keeping the axle centered under the vehicle during suspension movement
- Maintaining proper alignment and vehicle stability
Trac bars are commonly found in vehicles with solid front axles and coil spring suspensions, such as Jeeps and some trucks. They are usually installed parallel to the axle and attached to the frame on one end and the axle on the other end.