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Features heavy duty 32 spline center bars
• Nickel-Plated
changing the filter can help
It is ideal to run helper springs on setups where you cannot preload the main spring due to height issues or when experiencing springs coming loose from the coilover perch
15444‑6 VR38DETT 6
Perrin Recirculating BOV for 02-14WRX/04+STi Size:Black Features heavy duty 32 splineVehicle Fitment: 2002 2014 Subaru WRX 2004 2021 Subaru STi Description: Adjustable relief pressure and flow control makes fine tuning on the fly simple and quick with the PERRIN Blow Off Valve. Inefficient factory blow off valves (BOV) can hinder boost response during shifts and can damage your expensive turbo charger. PERRIN offers several choices for owners to choose the best solution to the problem. The PERRIN blow off valve cap, piston & flange
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