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

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

Sort by:
Filter and sort

Filter and sort

Showing 108 of 108 products

Showing 108 of 108 products
  • Cobra Sport Ford Focus ST 225 (Mk2) Front Pipe Performance Exhaust
    Vendor:
    Cobra Sport

    Cobra Sport Ford Focus ST 225 (Mk2) Front Pipe Performance Exhaust

    Regular price
    £349.99
    Sale price
    £349.99
    Regular price
  • POWERFLEX FRONT ANTI ROLL BAR TO CHASSIS BUSH 22MM PFF19-1203-22 FOR FORD FOCUS MK2
    Vendor:
    Powerflex

    POWERFLEX FRONT ANTI ROLL BAR TO CHASSIS BUSH 22MM PFF19-1203-22 FOR FORD FOCUS MK2

    Regular price
    £61.44
    Sale price
    £61.44
    Regular price
  • Rear wheel bearing for MK2 Focus ST ST225
    Vendor:
    Genuine Ford

    Rear wheel bearing for MK2 Focus ST ST225

    Regular price
    £129.99
    Sale price
    £129.99
    Regular price
  • MK2 Focus ST & RS LuK Dual Mass Flywheel with bolts
    Vendor:
    LUK

    MK2 Focus ST & RS LuK Dual Mass Flywheel with bolts

    Regular price
    £399.00
    Sale price
    £399.00
    Regular price
  • MK2 Focus ST & RS Scorpion 200CEL 3" Sports Cat
    Vendor:
    Scorpion

    MK2 Focus ST & RS Scorpion 200CEL 3" Sports Cat

    Regular price
    £499.99
    Sale price
    £499.99
    Regular price
    £517.09
  • MK2 Focus ST ST225 Genuine Ford rear drop link
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Genuine Ford rear drop link

    Regular price
    £79.99
    Sale price
    £79.99
    Regular price
  • Powerflex Handling Pack - Focus MK2 ST & RS - PF19K-1002
    Vendor:
    Powerflex

    Powerflex Handling Pack - Focus MK2 ST & RS - PF19K-1002

    Regular price
    £241.02
    Sale price
    £241.02
    Regular price
  • Airtec Motorsport Remote Oil Cooler Kit – Top Grille Mounted for MK2 MK2 Focus ST225 & Rs
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Remote Oil Cooler Kit – Top Grille Mounted for MK2 MK2 Focus ST225 & Rs

    Regular price
    £573.05
    Sale price
    £573.05
    Regular price
  • Airtec Motorsport Big Turbo Tubular Exhaust Manifold & Downpipe for MK2 MK2 Focus ST225 & Rs
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Big Turbo Tubular Exhaust Manifold & Downpipe for MK2 MK2 Focus ST225 & Rs

    Regular price
    From £395.33
    Sale price
    From £395.33
    Regular price
  • Airtec Motorsport 3.5 Inch Downpipe for MK2 MK2 Focus ST225 & Rs
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport 3.5 Inch Downpipe for MK2 MK2 Focus ST225 & Rs

    Regular price
    £312.50
    Sale price
    £312.50
    Regular price
  • Clubsport by Autospecialists Bolt-in Rear Cage for Mk2 Focus
    Vendor:
    AIRTEC Motorsport

    Clubsport by Autospecialists Bolt-in Rear Cage for Mk2 Focus

    Regular price
    From £688.75
    Sale price
    From £688.75
    Regular price
  • Airtec 340LPH uprated fuel pump for MK2 Focus ST225 MK2 & Focus RS
    Vendor:
    AIRTEC Motorsport

    Airtec 340LPH uprated fuel pump for MK2 Focus ST225 MK2 & Focus RS

    Regular price
    £781.40
    Sale price
    £781.40
    Regular price
  • AIRTEC Motorsport Group A Filter for Focus ST Mk2
    Vendor:
    AIRTEC Motorsport

    AIRTEC Motorsport Group A Filter for Focus ST Mk2

    Regular price
    £216.90
    Sale price
    £216.90
    Regular price
  • MK2 Focus ST & RS Turbo to Downpipe Gasket - Genuine Ford
    Vendor:
    Wayside Performance

    MK2 Focus ST & RS Turbo to Downpipe Gasket - Genuine Ford

    Regular price
    £19.99
    Sale price
    £19.99
    Regular price
  • DeatschWerks 750cc Injectors for MK2 Focus ST and RS
    Vendor:
    DeatschWerks

    DeatschWerks 750cc Injectors for MK2 Focus ST and RS

    Regular price
    £589.15
    Sale price
    £589.15
    Regular price
  • MK2 Focus ST ST225 Front Brake Pads Genuine Ford
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Front Brake Pads Genuine Ford

    Regular price
    £94.99
    Sale price
    £94.99
    Regular price
  • Scorpion 3" downpipe for MK2 Focus ST ST225 and MK2 Focus RS
    Vendor:
    Scorpion

    Scorpion 3" downpipe for MK2 Focus ST ST225 and MK2 Focus RS

    Regular price
    £279.99
    Sale price
    £279.99
    Regular price
  • Maxton Design Spoiler CAP Ford Focus ST Mk2 Facelift
    Vendor:
    MAXTON® DESIGN

    Maxton Design Spoiler CAP Ford Focus ST Mk2 Facelift

    Regular price
    £129.00
    Sale price
    £129.00
    Regular price
  • Cobra Sport Ford Focus ST 225 (Mk2) Cat Back Performance Exhaust
    Vendor:
    Cobra Sport

    Cobra Sport Ford Focus ST 225 (Mk2) Cat Back Performance Exhaust

    Regular price
    From £705.00
    Sale price
    From £705.00
    Regular price
  • Cobra Sport Ford Focus ST 225 (Mk2) Venom Box Delete Cat Back Race Tube Performance Exhaust
    Vendor:
    Cobra Sport

    Cobra Sport Ford Focus ST 225 (Mk2) Venom Box Delete Cat Back Race Tube Performance Exhaust

    Regular price
    From £780.00
    Sale price
    From £780.00
    Regular price
  • Genuine Ford rear wheel bearing for MK2 Focus including ST and RS
    Vendor:
    Genuine Ford

    Genuine Ford rear wheel bearing for MK2 Focus including ST and RS

    Regular price
    £249.99
    Sale price
    £249.99
    Regular price
  • MK2 Focus ST ST225 Lower Gearbox Mount Bracket Genuine Ford
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Lower Gearbox Mount Bracket Genuine Ford

    Regular price
    £99.99
    Sale price
    £99.99
    Regular price
  • MK2 Focus ST ST225 Gearbox mount Genuine Ford
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Gearbox mount Genuine Ford

    Regular price
    £229.99
    Sale price
    £229.99
    Regular price
  • Maxton Design Rear Side Splitters Ford Focus Mk2 St Preface Model Fits With Rear Valance
    Vendor:
    MAXTON® DESIGN

    Maxton Design Rear Side Splitters Ford Focus Mk2 St Preface Model Fits With Rear Valance

    Regular price
    £79.00
    Sale price
    £79.00
    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.