SuperPro Rear Trailing Arm Lower Front Bushing Kit | 1990-2021 BMW 3 Series/Z4 (SPF2146K) YMM_2003_2008_Infiniti_FX_S50 Injen’s dual oval

Injen’s dual oval

Maintains factory ride height and handling dynamics

with better feedback through the steering and chassis

this carbon fiber lip is intended for straightforward installation

SuperPro Rear Trailing Arm Lower Front Bushing Kit | 1990-2021 BMW 3 Series/Z4 (SPF2146K) YMM_2003_2008_Infiniti_FX_S50 Injen’s dual oval1990 2021 BMW 3 Series Z4 Trailing Arm Lower Front Bush Kit by SuperPro As the OEM rubber trailing arm bushings deteriorate they induce undesirable characteristics into the handling of your vehicle. The trailing arm bushes stabilize the forward and aft movement of the axle. As these bushings wear they impart steering angles on the vehicle causing it to wander all over the road and make the vehicle subject to unintended and sometimes severe directional