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MK3 Ford Focus RS Performance Parts

Upgrade your MK3 Ford Focus RS with performance and replacement parts from AIRTEC Motorsport, Cobra Sport, Forge Motorsport, Genuine Ford, Maxton Design, Milltek, Scorpion and Wayside Performance.

Browse induction kits, intercoolers, exhaust systems, cooling upgrades, clutches, brakes, suspension, servicing parts and styling upgrades for the 2.3-litre EcoBoost Focus RS.

Not sure where to begin?

Read our MK3 Focus RS tuning guide for Stage 1 and Stage 2 hardware recommendations, expected power figures and advice based on our in-house dyno tuning experience.

Shop MK3 Focus RS Parts by Category

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

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  • Pro Hoses 16-piece Ancillary Hose Kit for Focus Rs Mk3 - Wayside Performance Pro Hoses 16-piece Ancillary Hose Kit for Focus Rs Mk3 - Wayside Performance
    AIRTEC Motorsport

    Pro Hoses 16-piece Ancillary Hose Kit for Focus Rs Mk3

    From £338.09
    From £338.09
  • MK3 Focus RS Front Control Arm Fitting Kit MK3 Focus RS Front Control Arm Fitting Kit
    Genuine Ford

    MK3 Focus RS Front Control Arm Fitting Kit

    £47.99
    £47.99
  • MK3 Focus RS Front Shock Absorbers Genuine Ford - Wayside Performance MK3 Focus RS Front Shock Absorbers Genuine Ford - Wayside Performance
    Genuine Ford

    MK3 Focus RS Front Shock Absorbers Genuine Ford

    From £480.00
    From £480.00
  • 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 Skirt Diffusers V.2 compatible with Ford Focus ST / RS Mk3

    £174.00
    £174.00
  • Spoiler Cap V2 Ford Focus 3 Rs - Wayside Performance Spoiler Cap V2 Ford Focus 3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Spoiler Cap V2 Ford Focus 3 Rs

    £129.00
    £129.00
  • Front Splitter Ford Focus 3 Rs V.4 - Wayside Performance Front Splitter Ford Focus 3 Rs V.4 - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus 3 Rs V.4

    £174.00
    £174.00
  • Rear Splitter 'aero' Ford Focus Mk3 Rs - Wayside Performance Rear Splitter 'aero' Ford Focus Mk3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Rear Splitter 'aero' Ford Focus Mk3 Rs

    £267.00
    £267.00
  • Rear Side Splitters Ford Focus Rs Mk3 - Wayside Performance Rear Side Splitters Ford Focus Rs Mk3 - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Rear Side Splitters Ford Focus Rs Mk3

    £79.00
    £79.00
  • Front Splitter 'aero' Ford Focus Mk3 Rs - Wayside Performance Front Splitter 'aero' Ford Focus Mk3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter 'AERO' Ford Focus Mk3 Rs

    £267.00
    £267.00
  • Racing Durability Side Skirts Diffusers (+flaps) Ford Focus Rs Mk3 (2015-2018) - Wayside Performance Racing Durability Side Skirts Diffusers (+flaps) Ford Focus Rs Mk3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Racing Durability Side Skirts Diffusers (+flaps) Ford Focus Rs Mk3 (2015-2018)

    From £209.00
    From £209.00
  • Side Splitters 'aero' Ford Focus Mk3 Rs - Wayside Performance Side Splitters 'aero' Ford Focus Mk3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Side Splitters 'aero' Ford Focus Mk3 Rs

    £304.00
    £304.00
  • Racing Durability Side Skirts Diffusers Ford Focus Rs Mk3 (2015-2018) - Wayside Performance Racing Durability Side Skirts Diffusers Ford Focus Rs Mk3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Racing Durability Side Skirts Diffusers Ford Focus Rs Mk3 (2015-2018)

    From £149.00
    From £149.00
  • Pro Hoses Three-piece Boost Hose Kit for Focus Rs Mk3 - Wayside Performance Pro Hoses Three-piece Boost Hose Kit for Focus Rs Mk3 - Wayside Performance
    AIRTEC Motorsport

    Pro Hoses Three-piece Boost Hose Kit for Focus Rs Mk3

    From £179.55
    From £179.55
  • Airtec Motorsport Stage 2 Induction Kit for Focus Mk3 Rs Airtec Motorsport Stage 2 Induction Kit for Focus Mk3 Rs
    AIRTEC Motorsport

    Airtec Motorsport Stage 2 Induction Kit for Focus Mk3 Rs

    £376.50
    £376.50
  • Airtec Motorsport Intercooler Upgrade for Mk3 Focus Rs - Wayside Performance Airtec Motorsport Intercooler Upgrade for Mk3 Focus Rs - Wayside Performance
    AIRTEC Motorsport

    Airtec Motorsport Intercooler Upgrade for Mk3 Focus Rs

    £631.76
    £631.76
  • Airtec Motorsport Oil Breather(S) for Mk3 Focus Rs - Wayside Performance Airtec Motorsport Oil Breather(S) for Mk3 Focus Rs - Wayside Performance
    AIRTEC Motorsport

    Airtec Motorsport Oil Breather(S) for Mk3 Focus Rs

    From £223.28
    From £223.28
  • Mk3 Ford Focus RS Scorpion Cat-Back - Wayside Performance Mk3 Ford Focus RS Scorpion Cat-Back With Valve Plate - SFD084 - Wayside Performance
    Scorpion

    Mk3 Ford Focus RS Scorpion Cat-Back

    From £819.00
    From £819.00
    £840.34
  • Street PRO Rear Side Splitters Ford Focus RS Mk3 - Wayside Performance Street PRO Rear Side Splitters Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Rear Side Splitters Ford Focus RS Mk3

    £69.00
    £69.00
  • Street PRO Side Skirts Diffusers Ford Focus RS Mk3 - Wayside Performance Street PRO Side Skirts Diffusers Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Side Skirts Diffusers Ford Focus RS Mk3

    £149.00
    £149.00
  • Street PRO Rear Diffuser Ford Focus RS Mk3 - Wayside Performance Street PRO Rear Diffuser Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Rear Diffuser Ford Focus RS Mk3

    £149.00
    £149.00
  • Street PRO Front Splitter V.2 Ford Focus RS Mk3 - Wayside Performance Street PRO Front Splitter V.2 Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Front Splitter V.2 Ford Focus RS Mk3

    £179.00
    £179.00
  • Street PRO Front Splitter + Flaps Ford Focus RS Mk3 - Wayside Performance Street PRO Front Splitter + Flaps Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Front Splitter + Flaps Ford Focus RS Mk3

    £199.00
    £199.00
  • Street PRO Side Skirts Diffusers + Flaps Ford Focus RS Mk3 - Wayside Performance Street PRO Side Skirts Diffusers + Flaps Ford Focus RS Mk3 - Wayside Performance
    MAXTON® DESIGN

    Street PRO Side Skirts Diffusers + Flaps Ford Focus RS Mk3

    £199.00
    £199.00
  • Side Flaps Ford Focus RS MK3 (2015-2018) - Wayside Performance Side Flaps Ford Focus RS MK3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Side Flaps Ford Focus RS MK3 (2015-2018)

    £59.00
    £59.00

Shop MK3 Focus RS Parts by Category

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