It's not only smaller

providing better roll stiffness

the Focus is already pushing the boundaries of its standard plastic blow-off valve - and there's not much room to turn the boost up before the standard valve will struggle to keep up

This setup requires some modification and welding to the OEM subframe (FD legal)

Brackets are included to fit M brake calipers

Clutch Kit - Xtreme Performance Extra Heavy Duty Sprung Ceramic KHD19002-1BX JRX12 It's not only smallerXtreme 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