Perrin [04-07 STI, 02-07 WRX] Radiator Shroud - Neon Yellow | PSP-ENG-501NY Automotive Gauge Rear Spring Rate: 5kgf/mm

Rear Spring Rate: 5kgf/mm

unlike many competitor options

Complete Set: Includes driver and passenger side headlights and front parking/turn signal lights for both sides

Direct replacement for your factory control arm

it minimizes drag while adding practical downforce

Perrin [04-07 STI, 02-07 WRX] Radiator Shroud - Neon Yellow | PSP-ENG-501NY Automotive Gauge Rear Spring Rate: 5kgf/mmThis shroud has been designed to improve the overall cooling efficiency by channeling the incoming airflow to make direct contact with the face of the radiator. Typically under driving conditions, the air would hit the face of the radiator and then get deflected in all other directions. The shroud prevents the air from getting deflected into the engine bay forcing more air to stay in contact with the radiator. Additionally, other benefits include