Airtec - XL 'Group A' Air Filter - Ford Focus ST (MK2) bmw-5-series-e39---98-03-m5---400-esi9200269 ECU recalibration is necessary after

ECU recalibration is necessary after fitting

This kit contains four T304 stainless steel front and rear hoses

• Pump upgrade for B38 / B48 / B58

Easier rev-matching

Airtec - XL 'Group A' Air Filter - Ford Focus ST (MK2) bmw-5-series-e39---98-03-m5---400-esi9200269 ECU recalibration is necessary afterAirtec Motorsport Group A induction kit for the Ford Focus ST225 Mk2 and Focus RS Mk2, developed for enthusiasts who want to combine maximum airflow, a more aggressive Intake sound and a unique look in the engine compartment. This kit utilises the largest filter combination currently offered by Airtec for the Focus Mk2 platform. At its heart is the enormous 8 inch Cosworth Group A air filter, combined with an 80 mm CNC machined aluminium trumpet