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A stealthy approach to higher air flow
The stiffer calipers and stainless steel lines reduce system compliance
The Clutch Masters FX200 is recommended for the STI with a little more than just basic bolt-ons
and is a proven product utilized and trusted on high-horsepower applications
Grimmspeed Air Oil Separator (Red) - Subaru STI VA Electronic A stealthy approach to higherFits 2015+ Subaru STI An Air Oil Separator has one job, remove the oil from the engine ventilation system so the oil does not get sent through the intake system. The GrimmSpeed AOS is unique as it allows you to maintain your PCV Valve while separating the oil out of the crankcase and head ventilation air! Our AOS will allow your engine to run more efficiently due to the separation of oil from the intake system. When there is oil in your system, the
US$ 19.95
US$ 19.95
US$ 69.50
US$ 19.95
US$ 69.50
US$ 19.95
