The Airtec Motorsport V2 Carbon CAIS (Closed Air Induction System) for the Ford Focus RS Mk2 is back and has been improved based on years of practical experience. This second-generation closed induction system is manufactured from genuine carbon fibre and offers even better airflow, lower Intake temperatures and more power than its already popular predecessor.
Based on Airtec’s successful WRC-inspired CAIS design, this updated version features a modified top section and an enlarged snorkel design to further optimise the airflow towards the filter. This allows the engine to draw in fresh air more easily, resulting in increased power, better throttle response and smoother power delivery.
The fully sealed carbon airbox houses a massive Airtec Motorsport Group A-style cotton air filter. As the system draws in fresh air exclusively from the original front Intake, heat soak issues are minimised and Intake temperatures are kept as low as possible.
The combination of the larger filter surface area, the improved airflow and the thermal properties of carbon fibre delivers a proven power gain of up to 20 pk, depending on the vehicle’s specifications.
In addition to the performance gains, the carbon airbox gives the engine bay a much more exclusive look and produces a deeper, sportier Intake note without becoming intrusive during normal use.
The kit comes complete with high-quality Pro Hoses silicone hoses, stainless steel hose clamps, fitting materials and an installation guide. Furthermore, the airbox is supplied fully assembled, so fitting takes just a few minutes.
Please note: Black, blue and red silicone hoses are usually available from stock. Other colours are made to order and have a longer lead time.
Advantages
•
Redesigned• Up to 20 pk power
gain• Manufactured from genuine carbon fibre•
Sealed airbox to prevent heat soak•
Draws in only cold air
from the front• Large Group A-style cotton air
filter• Improved throttle
response• Deeper and sportier Intake note•
Supplied
fully pre-assembled• Includes Pro Hoses silicone hoses
Compatibility
• Ford Focus RS Mk2 2.5 turbo
Frequently Asked Questions
What is the difference between the V1 and V2 CAIS?
The V2 features an improved carbon airbox with a larger snorkel and optimised airflow, resulting in additional power gains compared to the V1 version.
Does this kit actually deliver a power gain?
Yes. Airtec recorded power gains of up to 20 pk depending on the car’s configuration. During dynamometer tests, power increased from 388 pk to 400 pk compared to a standard airbox with a performance filter.
Why is a sealed airbox better?
A sealed system prevents hot air from being drawn in from the engine compartment, keeping Intake temperatures lower and ensuring more consistent performance.
Is the kit supplied complete?
Yes. The kit is supplied pre-assembled, including an air filter, Pro Hoses silicone hoses, stainless steel hose clamps and all necessary fitting materials.
