Contact Us: 01245 321750

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Airtec Focus ST MK2 Stage 4 Intercooler & 2.5inch big boost pipe upgrade


Our RS into ST Performance & Cooling kit has been Rolling road tested (tests caried out @ AMD Essex)

2.5" Hard pipe upgrade removes fords 2.0" restrictive boost pipes.

We saw gains of 11.8 bhp & 9 lb/ft torque increase's over the standard ford pipes, these gains were achieved by simply bolting on the big AS 2.5" Boost pipe kit!

(these are RS figures, ST gains to be publised soon) Gains will vary depending on spec of your ST

Intercooler spec.
Air-Ram Scoop, forces Air directly into core of intercooler
Huge high flow 60mm core, lower ACT Temps, 
Smooth flow end tanks, no welds, means no leaks
Airtec logo brackets
Increased BHP & torque Figure
Pro-Series Black
Strongest Intercooler available, backed up by our 3 year warranty. 
All Pipe's have swayed ends to stop the pipes blowing off
Fitting takes 1 - 2 hours depending on mechanical skill & tools available


Important Note.

The Pre-facelift ST has a different radiator compared to the facelift & RS, this makes the left hand pipe (Inlet side) very tight against the radiator cradle & boost hose, we recommend removing the radiator cradle bolt, levering the cradle to the right and re-drilling a new hole & then replace bolt.

Its very simple and Easy to do, but is necessary to give you extra clearance for the bigger 2.5" pipe, if you are still not happy with fit we would recommend fitting a RS radiator, not required to get the power you want, just makes cold side hose fit nicer.

Intake pipe - cold side
Without Symposer/dump valve take off
With Symposer/dump valve take off


Silicone Hose Colour
Gloss Black
Frozen White
Performance Blue
Race Red


AIRTEC Logo

Black intercooler - White logo
Silver intercooler - Black logo
No logo - Plain Silver
No logo - Plain Black

For more information please call us on 01245 321750

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Airtec Focus MK2 ST Stage4 Intercooler & 2.5 inch Big Boost Pipe upgrade

  • Brand: As Performance
  • Product Code: FocusST225Stage4
  • Availability: In Stock
  • £649.00


Tags: airtec, focus, mk2, stage4, intercooler, 2.5, inch, big, boost, pipe, upgrade