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 110 of 110 products

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Showing 110 of 110 products

Showing 110 of 110 products
  • MK2 Focus ST Hardrace 21mm Ball Joints
    Vendor:
    Hardrace

    MK2 Focus ST Hardrace 21mm Ball Joints

    Regular price
    £109.00
    Sale price
    £109.00
    Regular price
  • MK2 Focus ST & RS Denso 150AMP Alternator
    Vendor:
    Denso

    MK2 Focus ST & RS Denso 150AMP Alternator

    Regular price
    From £299.00
    Sale price
    From £299.00
    Regular price
  • Genuine Ford MK4 Mondeo Bonnet Latch
    Vendor:
    Genuine Ford

    Genuine Ford MK4 Mondeo Bonnet Latch

    Regular price
    £144.99
    Sale price
    £144.99
    Regular price
  • Sachs OE Slave Cylinder for Ford Focus MK2 ST225 and RS
    Vendor:
    Sachs

    Sachs OE Slave Cylinder for Ford Focus MK2 ST225 and RS

    Regular price
    £74.99
    Sale price
    £74.99
    Regular price
  • Powerflex Lower Engine Mount Small Bush PFF19-1221
    Vendor:
    Powerflex

    Powerflex Lower Engine Mount Small Bush PFF19-1221

    Regular price
    £40.74
    Sale price
    £40.74
    Regular price
  • 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
  • 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 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 Front Splitter Ford Focus Ii St Preface Model
    Vendor:
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus Ii St Preface Model

    Regular price
    £174.00
    Sale price
    £174.00
    Regular price
  • Maxton Design Side Skirts Diffusers Ford Focus St Mk2
    Vendor:
    MAXTON® DESIGN

    Maxton Design Side Skirts Diffusers Ford Focus St Mk2

    Regular price
    £174.00
    Sale price
    £174.00
    Regular price
  • Maxton Design Bonnet Add-on Ford Focus Mk2 Pre-face
    Vendor:
    MAXTON® DESIGN

    Maxton Design Bonnet Add-on Ford Focus Mk2 Pre-face

    Regular price
    £69.00
    Sale price
    £69.00
    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 Aluminium Radiator Upgrade for Focus Mk2 St and Rs
    Vendor:
    AIRTEC Motorsport

    Airtec Aluminium Radiator Upgrade for Focus Mk2 St and Rs

    Regular price
    £631.76
    Sale price
    £631.76
    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
  • 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 2.5-inch Big Boost Pipe Kit – Hotside Only CLEARANCE
    Vendor:
    AIRTEC Motorsport

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

    Regular price
    £249.00
    Sale price
    £249.00
    Regular price
    £281.36
  • MK2 Focus ST and RS Crankshaft Pulley for Aux Belt
    Vendor:
    Genuine Ford

    MK2 Focus ST and RS Crankshaft Pulley for Aux Belt

    Regular price
    £419.00
    Sale price
    £419.00
    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

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.