TurboXS "Real F'n Loud" Blow Off Valve Type XS Subaru WRX 2002-2007 / STI 2004-2021
WS02-XS-RFL
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With new and improved styling, the WS02-XS-RFL remains true to its roots - it's still really f'n loud!
Like all our valves, the RFL relieves compressor pressure surge caused by changing gears or backing off the throttle and has been used on turbo charged engines running up to 35 psi boost.
If you need to ask how loud it is, this valve is too loud for you!
This blow off valve comes everything needed to install to a 2002-2007 WRX or 2004+ STi.
Review pages below for additional information: