Delivery, customs and taxes
Know the landed cost before you order
+
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Lead times and urgent orders
Check timing before you commit
+
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
Fitment checked before you order
Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
The five-cylinder Focus ST MK2 has one of the great warble soundtracks, and this MST Performance cold air intake turns it up at the intake end. Built around aluminium pipework and a heat-shielded washable dry filter, the kit headline-fits the 2008-2012 ST 2.5 — and the same part covers a wide spread of MK2 petrol and TDCi models, MK3 1.6 variants and even the 2015-2018 Focus RS 2.3, all in the application table below.
Best For
ST225 owners feeding the five-cylinder a freer breath and a louder warble
Everyday MK2 and MK3 Focus drivers upgrading with the same engineered kit
RS 2.3 builds starting the induction side before further stages
Key Specs
Manufacturer: MST Performance
Product Type: Cold air intake system
SKU: MST-FO-MK309
Vehicle Application: 14 Focus applications from ST MK2 2.5 to RS MK3 2.3 (full list below)
Material: Mandrel-bent 6061 or cast aluminium intake pipework
Air Filter: Nanofiber dry high-flow filter, washable and reusable
Included Items: Pipework, high-flow filter, heat shield, mounting hardware and fitting instructions
Fitment type: vehicle-specific, direct OEM replacement
One Kit Across The Focus Family
Because these Focus generations share intake architecture, MST validates one system across petrol, diesel and the fast flagships alike — which makes it an easy fitment question: find your engine in the table, match the years, order. Running an MK2 TDCi? Pair the intake with the MST silicone boost hose kit and upgrade both sides of the turbo plumbing at once.
Fitment And Setup Checks
Find your exact engine and years in the application table before ordering — coverage spans MK2, MK3, ST and RS variants with differing year ranges
MK3 coverage is the 1.6 petrol family plus the RS 2.3; MK3 diesels are not included here
Fitting instructions are included; confirm the part number if your car sits at a year boundary
Does it really fit both the ST and ordinary MK2 models?
Yes — the application table is the authority: ST 2.5 (2008-2012), MK2 1.4-2.0 petrols, TDCi diesels, MK3 1.6 variants (2010-2019) and RS 2.3 (2015-2018). Match your engine and years exactly.
Will the five-cylinder sound different?
That is half the appeal — expect a more pronounced induction voice layered over the ST's warble under load, while cruising manners stay civil.
What if my Focus is a diesel?
MK2 1.6, 1.8 and 2.0 TDCi models are supported. For MK2 diesels you can also add MST's silicone boost hoses for the turbo side.
Delivery, customs and taxes
Know the landed cost before you order
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Lead times and urgent orders
Check timing before you commit
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Fitment first
Check fit before you order
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Check vehicle fitment
Need help with this product?
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.