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MK3 Ford Focus ST250 Performance Parts

Upgrade your MK3 Ford Focus ST250 with performance and replacement parts from AIRTEC Motorsport, Cobra Sport, Forge Motorsport, Genuine Ford, Maxton Design, Powerflex, Whiteline and Wayside Performance.

Browse induction kits, intercoolers, exhaust systems, suspension upgrades, brakes, clutches, engine mounts, servicing parts and styling upgrades for both pre-facelift and facelift Focus ST250 models.

Not sure where to begin?

Read our MK3 Focus ST250 tuning guide for recommended Stage 1 and Stage 2 modifications, expected power figures and advice based on our custom dyno tuning experience.

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  • Focus MK3 ST250 NS driveshaft CV boot kit Inner and outer nearside passenger - Wayside Performance
    Genuine Ford

    Focus MK3 ST250 driveshaft CV boot kit for N/S or O/S Passenger or Drivers Side

    £119.99
    £119.99
  • Front Splitter V4 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance Front Splitter V4 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter V4 Ford Focus St Mk3 Facelift (2015-2018)

    £174.00
    £174.00
  • Rear Side Splitters V2 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance Rear Side Splitters V2 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Rear Side Splitters V2 Ford Focus St Mk3 Facelift (2015-2018)

    £79.00
    £79.00
  • Airtec Motorsport 2.5-inch Big Boost Pipe Kit for Mk3 Focus St250 - Wayside Performance Airtec Motorsport 2.5-inch Big Boost Pipe Kit for Mk3 Focus St250 - Wayside Performance
    AIRTEC Motorsport

    Airtec Motorsport 2.5-inch Big Boost Pipe Kit for Mk3 Focus St250

    £442.24
    £442.24
  • MK3 Focus ST 250 Scorpion De-cat downpipe - 3" Inch - Wayside Performance
    Scorpion

    MK3 Focus ST 250 Scorpion De-cat downpipe - 3" Inch

    £329.00
    £329.00
    £356.52
  • Genuine Ford Focus MK3 RS Spark Plugs set of 4 - 2.3 & 2.0 Ecoboost - Wayside Performance
    Genuine Ford

    Genuine Ford Focus MK3 ST ST250 Spark Plugs set of 4 - 2.0 Ecoboost

    £59.99
    £59.99
  • Cobra Sport Ford Focus ST 250 (Mk3) Cat Back Performance Exhaust - Wayside Performance Cobra Sport Ford Focus ST 250 (Mk3) Cat Back Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus ST 250 (Mk3) Cat Back Performance Exhaust

    From £861.37
    From £861.37
  • Forge Motorsport Induction Kit for the Ford Focus ST250 2015 onwards - Wayside Performance Forge Motorsport Induction Kit for the Ford Focus ST250 2015 onwards - Wayside Performance
    Forge Motorsport

    Forge Motorsport Induction Kit for the Ford Focus ST250 2015 onwards

    £439.99
    £439.99
  • MK3 Focus ST ST250 Eibach Pro lowering spring kit - 25mm - Wayside Performance
    Eibach

    MK3 Focus ST ST250 Eibach Pro lowering spring kit Pre-facelift - 25mm

    £269.00
    £269.00
  • Genuine Ford Focus Mk3 ST/ST250 Nearside Driveshaft - Wayside Performance Genuine Ford Focus Mk3 ST/ST250 Nearside Driveshaft - Wayside Performance
    Genuine Ford

    Genuine Ford Focus Mk3 ST/ST250 Nearside Driveshaft

    £699.00
    £699.00
  • Front Splitter Ford Focus Mk3 St (Cupra) Preface Model - Wayside Performance Front Splitter Ford Focus Mk3 St (Cupra) Preface Model - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus Mk3 St (Cupra) Preface Model

    £174.00
    £174.00
  • Front Splitter V.2 Ford Focus Mk3 St Preface Model - Wayside Performance Front Splitter V.2 Ford Focus Mk3 St Preface Model - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter V.2 Ford Focus Mk3 St Preface Model

    £174.00
    £174.00
  • MaxTon Design rear diffuser for Ford Focus 3 ST Estate, body styling accessory with aerodynamic design. Maxton Design rear diffuser for Ford Focus 3 ST Estate, body styling accessory, black aerodynamic car part, fits ST Estate model only.
    MAXTON® DESIGN

    Maxton Design Rear Diffuser Ford Focus 3 St Estate (Fits St Estate Version Only)

    £159.00
    £159.00
  • Front Splitter V.3 Focus St Mk3 Facelift Model - Wayside Performance Front Splitter V.3 Focus St Mk3 Facelift Model - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter V.3 Focus St Mk3 Facelift Model

    £174.00
    £174.00
  • Side Skirts Diffusers V2 Ford Focus St & Rs Mk3 (2015-2018) - Wayside Performance Side Skirts Diffusers V2 Ford Focus St & Rs Mk3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Side Skirts Diffusers V2 Ford Focus St & Rs Mk3 (2015-2018)

    £174.00
    £174.00
  • Front Splitter V5 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance Front Splitter V5 Ford Focus St Mk3 Facelift (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter V5 Ford Focus St Mk3 Facelift (2015-2018)

    £174.00
    £174.00
  • Focus ST250/MK 3 Stage 2 remap 290-305bhp - Wayside Performance Powergate Flash At Home tuning handset and Wayside Performance app
    Wayside Performance

    Focus ST250 MK3 — Stage 2 Remap (290–305bhp / up to 375ft/lb)

    From £599.00
    From £599.00
  • Focus ST250/MK 3 Stage 1 remap 270-280bhp - Wayside Performance Powergate Flash At Home tuning handset and Wayside Performance app
    Wayside Performance

    Focus ST250 MK3 — Stage 1 Remap (270–280bhp / 320–340ft/lb)

    From £599.00
    From £599.00
  • MK3 Ford Focus ST250 Wisbech Engineering Induction kit - Wayside Performance MK3 Ford Focus ST250 Wisbech Engineering Induction kit - Wayside Performance
    Wisbech Engineering

    MK3 Ford Focus ST250 Wisbech Engineering Induction kit

    From £340.00
    From £340.00
  • Ford Focus MK3 ST250 BC BR Series Coilover : Type RA - Wayside Performance
    BC Racing

    Ford Focus MK3 ST250 BC BR Series Coilover : Type RA

    £999.00
    £999.00
    £1,049.00
  • PBS Prorace Rear Pads for Mk3 Focus ST ST250 PBS Prorace Rear Pads for Mk3 Focus ST ST250
    PBS BRAKES

    PBS Prorace Rear Pads for Mk3 Focus ST ST250

    £159.99
    £159.99
  • PBS Prorace Front Pads for Mk3 Focus ST ST250 PBS Prorace Front Pads for Mk3 Focus ST ST250
    PBS BRAKES

    PBS Prorace Front Pads for Mk3 Focus ST ST250

    £217.90
    £217.90
  • MK3 Focus ST Rear Main Crankshaft Seal Genuine Ford - Wayside Performance MK3 Focus ST Rear Main Crankshaft Seal Genuine Ford - Wayside Performance
    Genuine Ford

    MK3 Focus ST Rear Main Crankshaft Seal Genuine Ford

    £149.99
    £149.99
  • MK3 Ford Focus Coolant Expansion Tank Genuine Ford - Wayside Performance
    Genuine Ford

    MK3 Ford Focus Coolant Expansion Tank Genuine Ford

    £54.99
    £54.99

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Browse our focused MK3 Focus ST250 collections for detailed product recommendations, fitment advice and buying guides.