09 Design HVF Carbon Induction Kit – Automatic Only – Ford Focus ST Mk4/Mk4.5
Unlock sharper response and a richer turbo sound with the 09 Design HVF carbon induction kit, built for Mk4 and Mk4.5 Focus ST models with automatic transmission. It replaces the restrictive factory intake with a high volume flow carbon fibre housing and a dual-entry performance air filter to feed your 2.3 EcoBoost with cool, dense air.
The matt-finish carbon fibre airbox acts as a thermal barrier, helping keep heat away from the filter. Its enlarged 73.5 mm bore smooths airflow from both the factory front air feed and the open cone, reducing pressure drop and letting the turbo breathe more freely. Expect faster spool, cleaner induction noise and a purposeful look in the bay.
Designed for daily use and spirited driving, it suits cars from stock to around 400 PS and 560 Nm. No cutting is required, and the kit works with the factory ducting and sensors. The included filter offers high flow with effective filtration to protect your engine.
- Automatic models only for Focus ST Mk4/Mk4.5 2.3 EcoBoost
- Carbon fibre housing for strength, low weight and heat resistance
- Dual-entry open-cone layout for near-unrestricted airflow
Check our vehicle lookup or see the Vehicle Fitment tab to confirm compatibility with your car before ordering.
Note: Minor variations in carbon fibre weave and finish are normal due to the manufacturing process.

