Turbosmart Kompact Shortie Dual Port Blow Off Valve Focus RS 2016-2019Your new Focus RS comes with some really great bells and whistles, but the factory OEM blow off valve isn't one of them. The standard blow off valve that comes with your new performance engine is made of low quality plastic and has been proven to leak and crack, causing serious problems. Upgrading to a premium quality blow off valve like this dual port valve from Turbosmart means your valve will be durable enough to last for years while providing even