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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
  • Focus RS MK2 clutch and flywheel kit - Upgrade for MK2 Focus ST225 LUK
    Vendor:
    LUK

    Focus RS MK2 clutch and flywheel kit - Upgrade for MK2 Focus ST225 LUK

    Regular price
    From £649.00
    Sale price
    From £649.00
    Regular price
    £599.00
  • Genuine Ford Focus MK2 ST ST225 Driveshaft
    Vendor:
    Genuine Ford

    Genuine Ford Focus MK2 ST ST225 Driveshaft

    Regular price
    From £699.00
    Sale price
    From £699.00
    Regular price
  • SuperPro Front Control Arm Kit for Ford Focus MK2 2.5 (21mm Ball Joints - After March 2006) TRC1136 ST
    Vendor:
    SuperPro

    SuperPro Front Control Arm Kit for Ford Focus MK2 2.5 (21mm Ball Joints - After March 2006) TRC1136 ST

    Regular price
    £289.99
    Sale price
    £289.99
    Regular price
    £301.87
  • Wayside Performance Gel domed badges
    Vendor:
    Wayside Performance Ltd

    Wayside Performance Gel domed badges

    Regular price
    From £4.00
    Sale price
    From £4.00
    Regular price
  • MK2 Focus RS Spark plugs - Upgrade for MK2 Focus ST225 - Set of 5
    Vendor:
    Bosch

    MK2 Focus RS Spark plugs - Upgrade for MK2 Focus ST225 - Set of 5

    Regular price
    £69.99
    Sale price
    £69.99
    Regular price
  • Wisbech Engineering Induction Kit Focus MK2 ST225 & MK2 Focus RS
    Vendor:
    Wisbech Engineering

    Wisbech Engineering Induction Kit Focus MK2 ST225 & MK2 Focus RS

    Regular price
    From £370.00
    Sale price
    From £370.00
    Regular price
    £0.00
  • Ford Focus ST & RS MK2 Cambelt & Waterpump kit - Genuine Ford
    Vendor:
    Genuine Ford

    Ford Focus ST & RS MK2 Cambelt & Waterpump kit - Genuine Ford

    Regular price
    From £279.00
    Sale price
    From £279.00
    Regular price
  • Forge Recirc Recirculation Valve direct fit MK2 Focus ST225
    Vendor:
    Forge Motorsport

    Forge Recirc Recirculation Valve direct fit MK2 Focus ST225

    Regular price
    £159.99
    Sale price
    £159.99
    Regular price
    £153.97
  • Wayside Performance Logo Stickers x 3
    Vendor:
    Wayside Performance Ltd

    Wayside Performance Logo Stickers x 3

    Regular price
    £3.00
    Sale price
    £3.00
    Regular price
  • MK2 Ford Focus bonnet catch conversion kit
    Vendor:
    Wisbech Engineering

    MK2 Ford Focus bonnet catch conversion kit

    Regular price
    £129.99
    Sale price
    £129.99
    Regular price
  • Ford MK2 Focus ST225 Hardrace uprated front lower arms / wishbones
    Vendor:
    Hardrace

    Ford MK2 Focus ST225 Hardrace uprated front lower arms / wishbones

    Regular price
    From £409.00
    Sale price
    From £409.00
    Regular price
    £430.21
  • Genuine Ford MK2 Focus ST225 & RS Auxiliary Belt Set
    Vendor:
    Genuine Ford

    Genuine Ford MK2 Focus ST225 & RS Auxiliary Belt Set

    Regular price
    £44.99
    Sale price
    £44.99
    Regular price
  • PRO HOSES COLD SIDE BOOST PIPE (WITH OR WITHOUT SYMPOSER) FOR MK2 FOCUS ST225
    Vendor:
    AIRTEC Motorsport

    PRO HOSES COLD SIDE BOOST PIPE (WITH OR WITHOUT SYMPOSER) FOR MK2 FOCUS ST225

    Regular price
    From £89.99
    Sale price
    From £89.99
    Regular price
  • Bosch 550cc Injectors MK2 Focus ST ST225 & RS - Set of 5 Multihole injectors
    Vendor:
    Bosch

    Bosch 550cc Injectors MK2 Focus ST ST225 & RS - Set of 5 Multihole injectors

    Regular price
    £229.99
    Sale price
    £229.99
    Regular price
  • MK2 Ford Focus ST RS 2.5L Genuine Bosch Ignition Coil Coilpack
    Vendor:
    Bosch

    MK2 Ford Focus ST RS 2.5L Genuine Bosch Ignition Coil Coilpack

    Regular price
    From £57.99
    Sale price
    From £57.99
    Regular price
  • Airtec Motorsport Gearbox Torque Mount Upgrade for Focus Mk2 & Mk3
    Vendor:
    AIRTEC Motorsport

    Airtec Motorsport Gearbox Torque Mount Upgrade for Focus Mk2 & Mk3

    Regular price
    From £108.42
    Sale price
    From £108.42
    Regular price
  • MK2 Focus ST ST225 Bosch MAF Sensor
    Vendor:
    Bosch

    MK2 Focus ST ST225 Bosch MAF Sensor

    Regular price
    £199.99
    Sale price
    £199.99
    Regular price
  • PRO HOSES COOLANT HOSE KIT FOR MK2 FOCUS ST
    Vendor:
    AIRTEC Motorsport

    PRO HOSES COOLANT HOSE KIT FOR MK2 FOCUS ST

    Regular price
    From £214.54
    Sale price
    From £214.54
    Regular price
  • V3 Wisbech Engineering Induction Kit Focus MK2 ST225
    Vendor:
    Wisbech Engineering

    V3 Wisbech Engineering Induction Kit Focus MK2 ST225

    Regular price
    From £390.00
    Sale price
    From £390.00
    Regular price
    £0.00
  • MK2 Focus ST ST225 Front brake discs pair Genuine Ford
    Vendor:
    Genuine Ford

    MK2 Focus ST ST225 Front brake discs pair Genuine Ford

    Regular price
    £169.00
    Sale price
    £169.00
    Regular price
  • Maxton Design Rear Valance Ford Focus Mk2 St (Preface)
    Vendor:
    MAXTON® DESIGN

    Maxton Design Rear Valance Ford Focus Mk2 St (Preface)

    Regular price
    £174.00
    Sale price
    £174.00
    Regular price
  • Airtec Inlet manifold / Plenum for Focus Mk2 ST & RS
    Vendor:
    AIRTEC Motorsport

    Airtec Inlet manifold / Plenum for Focus Mk2 ST & RS

    Regular price
    From £449.00
    Sale price
    From £449.00
    Regular price
  • Wisbech Engineering V4 3.5" induction kit for MK2 Focus ST ST225
    Vendor:
    Wisbech Engineering

    Wisbech Engineering V4 3.5" induction kit for MK2 Focus ST ST225

    Regular price
    From £470.00
    Sale price
    From £470.00
    Regular price
  • MK2 Focus ST ST225 Bosch MAP Sensor
    Vendor:
    Bosch

    MK2 Focus ST ST225 Bosch MAP Sensor

    Regular price
    £69.99
    Sale price
    £69.99
    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.