APR Aerodynamic Kit Subaru WRX / STI 2018-2021 vendor_Fumoto The wider diameter of this

The wider diameter of this rail allows bigger fuel amount to be supplied to the injectors

Part #: WS02-XS-HYB (Supersedes WS-HYB)

which allow for higher oil capacity which aids in cooling and keeps the shock performing at hig ambient temperatures while being put through the paces on track

Simple bolt-on to factory bumper beam

Injen has put it all on the table to give you

APR Aerodynamic Kit Subaru WRX / STI 2018-2021 vendor_Fumoto The wider diameter of thisPart #: APR AB 818006 The aerodynamic kit for the Subaru WRX STI combines all the best aerodynamic upgrades into a single package. This package is designed to improve high speed handling, both on and off the track. This Aerodynamic Kit Includes: Front Air Dam Side Rocker Extensions Rear Bumper Skirts