AIRTEC Motorsport Big Boost Pipe Kit - Ford Focus ST MK2


ATMSFO63 - The Motorsport 2.5" Big Boost Pipe Kit from AIRTEC is a must for all remapped MK2's, with everything you require included in this kit.

Replacing the 2.0" restrictive boost pipes with the 2.5" hard pipe, will see gains of 11.8 bhp alongside a 9 lb/ft torque increase.

Originally designed for BIG BHP Focus RS, the Boost Pipe Kit will work greater on bhp of 375 and over, with the tests conducted on a 400bhp demo car. 


  • Cold side (Intercooler to throttle body) we went for a 1 piece 2.5" silicon hose, this means you have NO joins and can add to extra flow and increased power. Available with or without dump valve outlet. 
  • Hot side (Turbo to Intercooler) is made from 2.5" light weight alloy and connected with 5 ply silicon hose joiners.
Will fit the following Intercoolers:
  • Pace
  • Pro-Alloy
  • Forge
  • Ford OEM
  • Direct replacement! no modding required.

This item will not fit the Focus ST Stage 1/2 intercooler. But will fit the Focus ST Stage 3 intercooler.

Fitting takes approximately 1 hour. For fitting please contact us on the below details:

T: 01924 228042  E:

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