09 Design HFW Carbon Crossover Pipe Kit – Ford Focus ST Mk4/4.5
Unlock smoother airflow and crisper throttle response with the 09 Design HFW (High Volume Flow) carbon fibre crossover pipe. It replaces the factory pipe with a lighter, stronger and more heat-resistant design that helps reduce intake temperatures, sharpens induction sound, and cleans up the look of your engine bay.
Designed for daily use and spirited driving, this crossover pipe flows more air with less restriction. The carbon construction resists heat soak, while the internal shape guides air with minimal turbulence. Expect a more responsive feel, a deeper induction note, and a premium finish under the bonnet.
Fitment
Designed for Ford Focus ST Mk4 and Mk4.5 petrol models. Use our vehicle lookup to confirm fitment for your car, or check the Vehicle Fitment tab for full details.
Design and materials
Precision-made carbon fibre pipework with a reinforced mounting bracket and carbon breather support for stability and long-term durability. The OE engine cover can be retained. Works with the OE airbox for a subtler sound, or pair with the 09 Design carbon induction kit for maximum performance and tone.
What’s in the box
- Carbon fibre HFW crossover pipe with reinforced mount
- Two silicone induction hoses
- Quality hose clamps and a dedicated mounting bracket
Installation and care
Supplied with the parts needed for a clean, straightforward fit. Fit the silicone hoses to the carbon pipe before mounting on the vehicle. Position carefully, tighten clamps evenly, and check for clearances. Recheck fasteners after initial miles.
Note: minor differences in carbon weave or finish are normal due to the manufacturing process.



