Focus RS Mk2 Cosworth Grp A Cone filter with Black alloy trumpet Color:Black In addition to this

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5" Rolled in Slash

This causes foaming which effectively reduces the oils viscosity and so reduces the units damping effect

Focus RS Mk2 Cosworth Grp A Cone filter with Black alloy trumpet Color:Black In addition to thisProven on Big BHP Cosworth's for over 15 years and now available for the Focus RS Mk2 The huge Cosworth cone filter is available with Pro Hose joiner, AS performance cotton filter & comes with stainless jubilee clips from Alloy trumpet to induction pipe. Choice colour from options The Ultimate induction noise sound & wastegate chatter Large cotton designed filter with specifically machined alloy trumpets for Focus RS Mk2 fitment, No restrictions from