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Let's find your parts.
Start with your car.

Ford Focus ST225 Performance Parts & Upgrades

Upgrade your MK2 Ford Focus ST225 with performance parts from leading brands, including AIRTEC, Cobra, SuperPro, Forge Motorsport and Genuine Ford.

Browse induction kits, intercoolers, exhaust systems, suspension upgrades, brake components, clutches, engine mounts and servicing parts designed for the 2.5-litre turbocharged Focus ST.

Not sure where to begin? Read our Focus ST225 tuning guide for advice on the most effective upgrades, common problems and recommended modifications for different power goals.

Shop Focus ST225 parts by category

Showing 108 of 108 products

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Showing 108 of 108 products

Showing 108 of 108 products
  • Ford Focus Mk2 ST225 RS Style Roof Spoiler – Maxton Design
    Vendor:
    MAXTON® DESIGN

    Ford Focus Mk2 ST225 RS Style Roof Spoiler – Maxton Design

    Regular price
    £378.00
    Sale price
    £378.00
    Regular price
  • Airtec Motorsport stage 2 Intercooler Upgrade for Mk2 Focus ST
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport stage 2 Intercooler Upgrade for Mk2 Focus ST

    Regular price
    £382.82
    Sale price
    £382.82
    Regular price
    £347.24
  • MK2 Focus ST ST225 Boost Control Solenoid Pierburg
    Vendor:
    Pierburg

    MK2 Focus ST ST225 Boost Control Solenoid Pierburg

    Regular price
    £69.99
    Sale price
    £69.99
    Regular price
  • Airtec Motorsport Alloy Top Induction Pipe for Mk2 Focus St225 and Volvo C30 T5
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Alloy Top Induction Pipe for Mk2 Focus St225 and Volvo C30 T5

    Regular price
    £174.15
    Sale price
    £174.15
    Regular price
  • Maxton Design Rear Valance Ford Focus Ii St Facelift (2007-2011)
    Vendor:
    MAXTON® DESIGN

    Maxton Design Rear Valance Ford Focus Ii St Facelift (2007-2011)

    Regular price
    £174.00
    Sale price
    £174.00
    Regular price
  • Pro Hoses header Tank Hoses for Focus MK2 ST & RS
    Vendor:
    AIRTEC Motorsport

    Pro Hoses header Tank Hoses for Focus MK2 ST & RS

    Regular price
    From £104.99
    Sale price
    From £104.99
    Regular price
  • Airtec Motorsport Replacement Air Filter – Large Group a Cotton Filter
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Replacement Air Filter – Large Group a Cotton Filter

    Regular price
    £54.99
    Sale price
    £54.99
    Regular price
  • MK2 Focus ST and RS Genuine Ford Service Kit
    Vendor:
    Genuine Ford

    MK2 Focus ST and RS Genuine Ford Service Kit

    Regular price
    From £149.99
    Sale price
    From £149.99
    Regular price
  • MK2 Focus ST ST225 Driveshaft Seal
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Driveshaft Seal

    Regular price
    £17.99
    Sale price
    £17.99
    Regular price
  • Focus ST MK2 ST225 Airtec Stage 3 Intercooler Kit
    Vendor:
    AIRTEC Motorsport

    Focus ST MK2 ST225 Airtec Stage 3 Intercooler Kit

    Regular price
    £636.86
    Sale price
    £636.86
    Regular price
    £549.00
  • AIRTEC MOTORSPORT RS STYLE CROSSOVER PIPE FOR FOCUS ST 225
    Vendor:
    AIRTEC Motorsport

    AIRTEC MOTORSPORT RS STYLE CROSSOVER PIPE FOR FOCUS ST 225

    Regular price
    From £393.53
    Sale price
    From £393.53
    Regular price
  • Turbosmart Uprated Recirculating Valve TS-0203-1261
    Vendor:
    Turbosmart

    Turbosmart Uprated Recirculating Valve TS-0203-1261

    Regular price
    £149.94
    Sale price
    £149.94
    Regular price
  • Forge Motorsport Turbo Actuator for MK2 Ford Focus ST ST225
    Vendor:
    Forge Motorsport

    Forge Motorsport Turbo Actuator for MK2 Ford Focus ST ST225

    Regular price
    £198.76
    Sale price
    £198.76
    Regular price
  • SuperPro TRC1135 Complete Front Control Arm Kit (18mm Ball Joints - Up to Feb 2006) Ford Focus MK2 2.5 ST
    Vendor:
    SuperPro

    SuperPro TRC1135 Complete Front Control Arm Kit (18mm Ball Joints - Up to Feb 2006) Ford Focus MK2 2.5 ST

    Regular price
    £289.99
    Sale price
    £289.99
    Regular price
  • AIRTEC MOTORSPORT FOCUS MK2 TWO-PIECE ECU HOLDER
    Vendor:
    AIRTEC Motorsport

    AIRTEC MOTORSPORT FOCUS MK2 TWO-PIECE ECU HOLDER

    Regular price
    £119.99
    Sale price
    £119.99
    Regular price
  • Forge Motorsport Blow Off Valve and Kit for the Ford Focus ST 225 MK2
    Vendor:
    Forge Motorsport

    Forge Motorsport Blow Off Valve and Kit for the Ford Focus ST 225 MK2

    Regular price
    £185.34
    Sale price
    £185.34
    Regular price
  • MK2 Focus ST ST225 Rear Brake Discs Genuine Ford
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Rear Brake Discs Genuine Ford

    Regular price
    £119.00
    Sale price
    £119.00
    Regular price
  • Hardrace uprated left hand gearbox engine mount for MK2 Focus ST and RS
    Vendor:
    Hardrace

    Hardrace uprated left hand gearbox engine mount for MK2 Focus ST and RS

    Regular price
    £149.00
    Sale price
    £149.00
    Regular price
  • Maxton Design Spoiler Extension Ford Focus Mk2 St
    Vendor:
    MAXTON® DESIGN

    Maxton Design Spoiler Extension Ford Focus Mk2 St

    Regular price
    £129.00
    Sale price
    £129.00
    Regular price
  • Pro Hoses Replacement Hoses for Focus Rs Mk2 and St225 (Stage 3) Intercooler
    Vendor:
    AIRTEC Motorsport

    Pro Hoses Replacement Hoses for Focus Rs Mk2 and St225 (Stage 3) Intercooler

    Regular price
    From £155.00
    Sale price
    From £155.00
    Regular price
    £231.47
  • Airtec Motorsport 2.5-inch Big Boost Pipe Kit – Hotside Only
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport 2.5-inch Big Boost Pipe Kit – Hotside Only

    Regular price
    £281.36
    Sale price
    £281.36
    Regular price
  • Airtec Motorsport Two-piece Breather System for Focus Mk2 St & Rs
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Two-piece Breather System for Focus Mk2 St & Rs

    Regular price
    From £601.70
    Sale price
    From £601.70
    Regular price
  • Maxton Design Front Splitter Ford Focus II ST Facelift
    Vendor:
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus II ST Facelift

    Regular price
    £174.00
    Sale price
    £174.00
    Regular price
  • MK2 Focus ST ST225 Bosch Front Lambda Sensor Pre cat
    Vendor:
    Bosch

    MK2 Focus ST ST225 Bosch Front Lambda Sensor Pre cat

    Regular price
    £129.99
    Sale price
    £129.99
    Regular price

Choosing upgrades for your Focus ST225

The best upgrades for your MK2 Focus ST225 depend on its current condition, intended use and power target.

For most tuned road cars, the priority is ensuring the vehicle is mechanically healthy before improving airflow and cooling with a suitable induction kit, intercooler and exhaust system.

The standard clutch can also become a limiting factor as torque increases, while suspension bushes and control arms are common wear points that can significantly affect how the car drives.

Our dedicated collections contain detailed recommendations for each upgrade category, including which products suit Stage 1, Stage 2, higher-powered and track-driven cars.

For complete staged tuning advice, read our Focus ST225 tuning guide.

Why buy Focus ST225 parts from Wayside Performance?

We supply parts that we regularly fit, test and tune on Focus ST225s. This allows us to recommend components based on real-world fitment, performance and drivability rather than relying solely on manufacturer descriptions.

Contact us if you need help choosing compatible parts or planning the next stage of your build.