The Dual Port offers a 50/50 split between recirculating and vent-to-atmosphere

so it's perfect for the driver seeking big performance from their ST while keeping under the radar

causing a pressure differential between the piston of the BOV and the cap which will vent pressure from the intake system

) they have trouble holding the extra boost

Clutch Kit - Xtreme Performance Extra Heavy Duty Sprung Ceramic KFD23003-1BX JRX9 The Dual Port offers aXtreme Performance extra sprung ceramic kit 1BX Recommended for: Motorsport ApplicationsThese kits are available with sprung ceramic friction discs and are designed for motorsport applications where higher heat and torque capacity is required. These can also be used in some road applications. Specifications: Torque capacity Clamp load Increased over standard Sprung Ceramic Friction Disc Extra Heavy Duty Pressure Plate Kit contains everything you need