Focus ST Carbon Fibre Gen2 CAIS 'Cold Air Induction System' BC Racing 57S series airboxes replace the

57S series airboxes replace the factory air filter housing with a fully enclosed injection modified air box containing a reusable K&N air filter

comes complete with fixings

The Ultimate induction noise sound & wastegate chatter

The main characteristics of DS2500 are:

A must for all re-mapped RS's

Focus ST Carbon Fibre Gen2 CAIS 'Cold Air Induction System' BC Racing 57S series airboxes replace theAutoSpecialists Focus ST Carbon Fibre look Gen2 CAIS 'Cold Air Induction System' Gain 10 18 bhp depending on spec of your ST. 12 Month's of Proto types & testing has produced a Real Quality and Unbeatable value for money product. Our Gen1 CAIS worked great and feel it was the best value CAIS Money could buy and now we have gone that step further by making a bigger and better CAIS our New Gen2 version. Kit includes, Everything you will need to be able