Turbosmart - Subaru 02-07 WRX / 04-21 STI / 06-07-FXT - BOV Kompact Plumb (Back) subaru-brz-2019 The Ultra Fiber Disc maintains

The Ultra Fiber Disc maintains the superior half-engagement feeling specific to the Organic material

These have been designed to work with the USDM engines with intake only AVCS

Made of Chrome Vanadium

only Balance Charging

Stage 1 Organic Clutch

Turbosmart - Subaru 02-07 WRX / 04-21 STI / 06-07-FXT - BOV Kompact Plumb (Back) subaru-brz-2019 The Ultra Fiber Disc maintainsFull recirculating BOV. The Plumb Back system recirculates all excess pressure back into the intake system. Great for enthusiasts not wanting to be noticed but wanting the performance and reliability benefits of a quality BOV. Suits Subaru WRX. Included Gasket, Green Spring Rated 15 InHg (installed) Fitment Subaru Forester XT 2006 2007 Subaru WRX 2002 2007 Subaru WRX STI 2004 2021