Ford Focus MK3 RS Boost Hose Kit Colour:Red * ECE R90 approval

* ECE R90 approval

Many assume that limited slip differentials from different manufacturers are all the same

as the standard air box and filter reaches and exceeds its airflow limit

no need for modification to your engine bay

Increase front then rear bar size to neutralise understeer

Ford Focus MK3 RS Boost Hose Kit Colour:Red * ECE R90 approvalThe SD Hoses Silicone Boost hoses (part no. SD) has been designed to replace the standard restrictive OEM hoses on the Focus RS. The hose is constructed to provide a constant radius reducing restriction throughout the whole piping. The hose is made from high quality 6 layer mutli ply silicone. It is available in Black, Red, White or Blue to compliment the signature colours of the Focus RS range.