Airtec 2.5 inch big boost pipes with 70mm cold side Ford Focus MK2 ST/RS
 
The 2.5″ big boost pipe kit is a must for all remapped RS and ST’s, Everything you need is included in the kit.
 
Features:
Hot side (turbo to intercooler) is made from 2.5″ light-weight alloy and connected with 5 ply silicone hose joiners.
NEW! Now comes with 70mm coldside hose to fit standard size throttle body expanding up to 70mm
 
Please Note: This is a Symposer Delete Item
 
Will fit With the following intercoolers:
AIRTEC
Pace
Pro-Alloy
Forge
Ford OEM
Direct replacement! No modding required.
 
Our 2.5″ hard pipe upgrade removes Ford’s 2.0″ restrictive boost pipes. We saw gains of 11.8 bhp & 9 lb/ft torque increases over standard 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 cars with 375bhp and over.
All pipes have swaged ends to stop hoses from popping off when running higher boost levels
 
Choose from options throttle body size:
Standard Throttle Body  (63mm)
Uprated Throttle Body (70mm)
Fitting takes 1 – 2 hours.
 
Please note: 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.
FORD FOCUS MK2 RS - 2.5 Turbo
Ford Focus MK2 ST - 2.5 Turbo