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The Bosch 4
While many aftermarket wideband gauges are still operating on the older
This particular head gasket will come in the 93mm bore and in the 0
The Street Series pitch mount can be easily upgraded to racing specifications by adding our Competition Series 90A durometer bushings or Race Series Solid Steel bushing that significantly increases stiffness over the stock and GROUP N mount
body rigidity up around the rear
HKS RS Intake System - 2015-2021 Subaru STI (VAB VAF WRX STI EJ257 PDM_rear-lips The Bosch 4HKS sought to improve on the factory intake system on the STI due to the turbulent OEM piece. Replacing the corrugated section is a smooth intake pipe that will direct air efficiently to the turbo. HKS Racing Suction Intake System Highlights: Decreases Airflow Restrictions Removeable Air Duct Hyper Stealth Filter Frame Bench Flow Tested Racing Suction Intake System HKS sought to improve on the factory intake system on the STI due to the turbulent OEM