Part Number: TH-S107

Fitment: 08-14 Subaru WRX & STI Hatchback & Sedan

Details:

A trailing arm has a big job to do. First, it's got to provide an unyielding link between the chassis and the rear axle. Next, because the shocks are mounted to it, it must support the weight of the vehicle as well as the tension and compression forces generated between the rear wheels and the chassis. Finally, trailing arms need to be strong enough to withstand random hits from terra firma: rocks, roots, and plain old dirt.

hese trailing arms help to benefit the vehicle in two ways. The first and most obvious way is by eliminating the soft-rubber bushings that allow unpredictable play and movement in your suspension. This allows the driver to get a more direct feel for the car and a more predictable reaction which gives the driver more confidence.

The second way is by allowing fine-tuned adjustments to the rear suspension geometry. By changing the length of the traction rod you change the position and pitch of which the suspension rotates upon and you change the amount of "Anti-Squat" of the rear. Although the adjustment is minimal, it can change the behavior or the vehicle during weight transfer.