AIRTEC 2.5 Inch Big Boost Pipes ATMSFO63 – MK2 Ford Focus RS & ST



SKU: ATMSFO63 Categories: , , , , , Tags: , , , , , , Brand: AIRTEC Motorsport


AIRTEC 2.5 Inch Big Boost Pipes ATMSFO63 – MK2 Ford Focus RS & ST

The AIRTEC Motorsport big boost pipe kit is a must for all remapped RS’, everything you need is included in the kit.


  • Hot side (Turbo to Intercooler) is made from 2.5″ light weight alloy and connected with 5 ply silicon hose joiners.
  • Cold side (Intercooler to throttle body) is a 1 piece 2.5″ silicon hose, this means you have NO joins which can add to extra flow and increased power. Available with or without dump valve outlet.


Will fit with the following Intercoolers:

  • Pace
  • Pro-Alloy
  • Forge
  • Ford OEM
  • Direct replacement! no modding required.

AIRTEC’s 2.5″ hard pipe upgrade removes Ford’s 2.0″ restrictive boost pipes. They saw gains of 11.8 bhp & 9 lb/ft torque increases over the standard Ford pipes and these gains were achieved by simply bolting on the kit.

This kit is designed for BIG BHP Focus RS’ and will work best on 375bhp and over, was tested on our 400bhp demo car.

All pipes have swaged ends to stop the pipes blowing off on BIG BHP Focus RS’.

Fitting takes approx. 1 hour.

For Focus ST 225 – MUST Be fitted with 2.5″ outlets on intercooler. Stock ST is 2″.
Will not fit Focus ST Stage 1/2 intercooler. Will fit focus ST Stage 3 intercooler.



View all AIRTEC products

Additional information

Hose Colour

Bright Yellow, Frozen White, Gloss Black, Grey, Orange, Performance Blue, Race Red, Ultimate Green

Vehicle Option


Cold Side Boost Pipe

With Symposer Outlet, Without Symposer Outlet