RS500 Airbox [Mk2 Focus RS] Wheels Cancels out 'whistle' / unwanted

Cancels out 'whistle' / unwanted NVH apparent on some vehicles

Hoses available in three colours (Black

but here's the key performance highlights:

particularly useful during the initial start-up or break-in of engines to protect against galling and micro welding

RS500 Airbox [Mk2 Focus RS] Wheels Cancels out 'whistle' / unwantedmountune are pleased to confirm the return of the MK2 Focus RS Airbox The only Ford endorsed Mk2 Focus RS airbox upgrade as used in the Focus RS500 and MP350 upgrade mountunes involvement with the mk2 Focus RS began more than a year before the vehicles public debut back in 2009. From the outset it was clear that to increase the power output significantly, an improvement to the airflow capacity on the RS OE intake setup would be required. mountunes