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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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  • Cobra Sport Ford Focus RS (MK3) Downpipe Sports Cat / De-Cat Performance Exhaust - Wayside Performance Cobra Sport Ford Focus RS (MK3) Downpipe Sports Cat / De-Cat Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus RS (MK3) Downpipe Sports Cat / De-Cat Performance Exhaust

    From £370.01
    From £370.01
  • Cobra Sport Ford Focus RS (MK3) Turbo Back Performance Exhaust - Wayside Performance Cobra Sport Ford Focus RS (MK3) Turbo Back Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus RS (MK3) Turbo Back Performance Exhaust

    From £1,539.23
    From £1,539.23
  • Cobra Sport Ford Focus RS (MK3) Cat Back Performance Exhaust - Wayside Performance Cobra Sport Ford Focus RS (MK3) Cat Back Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus RS (MK3) Cat Back Performance Exhaust

    From £939.83
    From £939.83
  • Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Cat Back Performance Exhaust - Wayside Performance Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Cat Back Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Cat Back Performance Exhaust

    From £1,036.02
    From £1,036.02
  • Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Turbo Back Performance Exhaust - Wayside Performance Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Turbo Back Performance Exhaust - Wayside Performance
    Cobra Sport

    Cobra Sport Ford Focus RS (MK3) Venom Box Delete Race Turbo Back Performance Exhaust

    From £1,642.82
    From £1,642.82
  • RTS Performance Brake Discs – Ford Focus RS (MK3) – 350mm – Front Fitment (RTSBD-0250F) - Wayside Performance
    RTS Performance

    RTS Performance Front Brake Discs – MK3 Focus RS – 350mm

    £159.00
    £159.00
    £219.99
  • Focus MK3 ST & RS ECU Cover - Wayside Performance Focus MK3 ST & RS ECU Cover - Wayside Performance
    Genuine Ford

    Focus MK3 ST & RS ECU Cover

    From £39.99
    From £39.99
  • Forge Motorsport Alloy Adjustable Turbo Wastegate Actuator for the Ford Focus RS Mk3 - Wayside Performance Forge Motorsport Alloy Adjustable Turbo Wastegate Actuator for the Ford Focus RS Mk3 - Wayside Performance
    Forge Motorsport

    Forge Motorsport Alloy Adjustable Turbo Wastegate Actuator for the Ford Focus RS Mk3

    £146.16
    £146.16
  • Forge Motorsport Recirculation Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more - Wayside Performance Forge Motorsport Recirculation Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more - Wayside Performance
    Forge Motorsport

    Forge Motorsport Recirculation Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more

    £161.68
    £161.68
  • Forge Motorsport Ford Focus RS MK3 Brake Lines - Wayside Performance Forge Motorsport Ford Focus RS MK3 Brake Lines - Wayside Performance
    Forge Motorsport

    Forge Motorsport Ford Focus RS MK3 Brake Lines

    £119.99
    £119.99
  • Forge Motorsport Blow Off Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more - Wayside Performance Forge Motorsport Blow Off Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more - Wayside Performance
    Forge Motorsport

    Forge Motorsport Blow Off Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more

    £164.90
    £164.90
  • MK3 Focus RS Genuine Ford 2pc Clutch -- Upgrade for MK3 Focus ST250 - Wayside Performance MK3 Focus RS Genuine Ford 2pc Clutch -- Upgrade for MK3 Focus ST250 - Wayside Performance
    Genuine Ford

    MK3 Focus RS Genuine Ford 2pc Clutch -- Upgrade for MK3 Focus ST250

    £299.99
    £299.99
    £399.99
  • Central Rear Splitter Ford Focus 3 Rs - Wayside Performance Central Rear Splitter Ford Focus 3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Central Rear Splitter Ford Focus 3 RS

    £79.00
    £79.00
  • 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
  • Spoiler Cap Ver.1 Ford Focus 3 Rs - Wayside Performance Spoiler Cap Ver.1 Ford Focus 3 Rs - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Spoiler Cap Ver.1 Ford Focus 3 Rs

    £129.00
    £129.00
  • 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

    £164.00
    £164.00
  • Front Splitter Ford Focus 3 Rs V.3 - Wayside Performance Front Splitter Ford Focus 3 Rs V.3 - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus 3 Rs V.3

    £174.00
    £174.00
  • Front Splitter Ford Focus 3 Rs V.2 - Wayside Performance Front Splitter Ford Focus 3 Rs V.2 - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Splitter Ford Focus 3 Rs V.2

    £174.00
    £174.00
  • Front Racing Splitter Ford Focus Mk3 Rs (2015-up) - Wayside Performance Front Racing Splitter Ford Focus Mk3 Rs (2015-up) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Front Racing Splitter Ford Focus Mk3 RS (2015-up)

    £254.00
    £254.00
  • 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
  • Side Flaps Ford Focus Rs Mk3 (2015-2018) - Wayside Performance Side Flaps Ford Focus Rs Mk3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Side Flaps Ford Focus Rs Mk3 (2015-2018)

    £59.00
    £59.00
  • Racing Durability Front Splitter (+flaps) Ford Focus Rs Mk3 (2015-2018) - Wayside Performance Racing Durability Front Splitter (+flaps) Ford Focus Rs Mk3 (2015-2018) - Wayside Performance
    MAXTON® DESIGN

    Maxton Design Racing Durability Front Splitter (+flaps) Ford Focus Rs Mk3 (2015-2018)

    From £199.00
    From £199.00
  • Clubsport by Autospecialists Bolt-in Cage for Mk3 Focus Rs and St250 - Wayside Performance Clubsport by Autospecialists Bolt-in Cage for Mk3 Focus Rs and St250 - Wayside Performance
    AIRTEC Motorsport

    Clubsport by Autospecialists Bolt-in Cage for Mk3 Focus Rs and St250

    From £688.78
    From £688.78
  • Clubsport by Autospecialists Two-piece Brake Disc Upgrade (Pair) for Focus Rs Mk3 - Wayside Performance Clubsport by Autospecialists Two-piece Brake Disc Upgrade (Pair) for Focus Rs Mk3 - Wayside Performance
    AIRTEC Motorsport

    Clubsport by Autospecialists Two-piece Brake Disc Upgrade (Pair) for Focus Rs Mk3

    From £545.74
    From £545.74

Shop MK3 Focus RS Parts by Category

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