Ramair Ford Focus ST170 SR Performance Induction Kit – SR-143
The Ramair SR Performance Induction Kit is a direct replacement for the restrictive factory air intake on the Ford Focus ST170. Designed and hand-built in the UK, this kit is aimed at drivers who want a genuine improvement in throttle response and power delivery without a complicated installation process.
The standard intake system on most road cars is designed with cost, noise reduction, and emissions in mind – not outright performance. By replacing it with a free-flowing Ramair induction kit, your engine can breathe more efficiently, which translates into a more responsive throttle and an improvement in power. The difference is most noticeable when accelerating hard or driving at higher engine speeds.
What’s Included
- Twin layer foam performance filter – provides high airflow with effective engine protection
- Breather filter
- Black silicone coupler
- T304 stainless steel cage support structure – holds the filter’s shape under high airflow conditions
- Full fitting kit including all bolts, clips, and brackets
- Step-by-step fitting instructions
Build Quality and Materials
Every Ramair SR kit is 100% hand-built in the UK. The filter uses a twin-layer foam construction, which balances strong airflow with reliable filtration – keeping dirt and debris out of the engine while allowing more air through than a standard paper filter. The stainless steel internal cage gives the filter its structure, preventing it from collapsing under the suction created at high engine speeds.
Ramair backs every kit with a lifetime guarantee against manufacturing defects, which reflects the quality of materials and construction used throughout.
Maintenance
Foam filters are straightforward to clean and re-use, which keeps long-term running costs down. When the time comes, Ramair’s Filter Maintenance Kit (CK-003) is the recommended cleaning product for this filter and is available separately.
This kit is designed specifically for the Ford Focus ST170. To confirm fitment with your exact vehicle, please use the vehicle lookup tool on this page or check the Vehicle Fitment tab for full compatibility details before purchasing.
Additional Information
| Weight | 0.6 kg |
|---|---|
| Dimensions | 23.5 × 23.5 × 23.5 cm |
| Brand |

