Cobb 15-21 Subaru WRX & STI/2018 Type RA Alloy Front Lower Control Arm (Complete) STD Alignment - CB-ALY0016K

The COBB Subaru Alloy Front Lower Control Arm, STD Alignment (or Offset Caster) will increase the handling of your WRX to better than that of the STI. This is accomplished with by using light-weight alloy construction which yields less unsprung weight. Stiffer bushings also provide better tire contact patch control with minimal NVH and maximum service life.

The difference between this unit and the offset caster LCA is the offset provided by the rear bushing assemblies. On the offset caster unit, the centre of the bushing assembly is moved inboard (effective to 3 o'clock on the driver's side and 9 o'clock on the passenger's side when viewed from above). Doing this moves the rearward mounting position of the arm outboard, in turn sweeping the arm forward slightly which relocates the knuckle and base of the front strut forward introducing additional positive caster (~0.5° per side).

Why?

Improve your WRX's handling to better than that of a stock STI. These Lower Control Arms are lighter weight and have stiffer bushings which improve handling characteristics.