Focus RS mk1 Stage 1 Airtec Front mount Intercooler kit with 70mm core!Finished in Pro Series Black for that ultimate sleeper look! Why do I need a front mount intercooler kit? The original charge cooler kit works o. k. on standard cars but on modified cars with increased boost etc the water temps in the charge cooler can't cope and start to climb to scary levels which can cause your ACT's (Air charge temperature) to rise to over 55+ degree's (on our test they kep't climbing to well over 55 on charge cooler system)