This Airtec 2.5” Big Boost Pipes kit with a 70mm cold side has been developed for the Ford Focus ST and RS MK2 and delivers improved airflow, higher boost efficiency and increased power.
The upgrade replaces the restrictive 2.0” OEM pipes with larger 2.5” aluminium pipes. Combined with the 70mm cold side, airflow is further optimised, resulting in increased power, better response and reliability at high boost pressures.
Benefits
• Larger 2.5” boost pipes for improved airflow•
70mm cold side for maximum Air Intake•
+11.8 bhp and +9 lb/ft gain (bolt-on)
• Faster turbo
response• Less restriction than OEM
pipes• Ideal for high-performance builds (375+ bhp)
Technical specifications
• Material: lightweight aluminium
tubing• Hot-side diameter: 2.5”•
cold side: 70mm (option: 63mm or 70mm throttle body)
• Silicone couplings:
5-ply• Finish:
black• Swaged pipe ends to prevent loosening
Compatibility
• Ford Focus ST MK2 (ST225)
• Ford Focus RS MK2
Important compatibility information
• The ST225 must have 2.5” Intercooler outlets (OEM is 2”)
• Does NOT fit Stage 1/2
intercoolers• DOES fit Stage 3 intercoolers
Compatible with intercoolers
•
Airtec•
Pace• Pro
Alloy•
Forge• OEM Ford
Contents
• Complete boost pipe kit•
Aluminium
pipes• Silicone
couplings• Fitting parts
Important information
• Symposer delete
included• Installation: approx. 1–2
hours• Check clearance during installation (radiator clearance)
• Custom colours available on request (5–10 days’ delivery time)
Frequently asked questions
What are the benefits of this upgrade?
Increased power, improved airflow and more stable performance at high boost.
Is this plug-and-play?
Yes, a direct replacement requiring no modifications (provided the correct Intercooler is fitted).
Who is this suitable for?
Primarily for high-performance setups from around 375 bhp.
