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Fitment guide

Best Mods for the Ford Focus RS

The Mk3 Focus RS pairs a 2.3 EcoBoost with trick all-wheel drive and a drift mode nobody asked for but everyone loves. It responds well to a tune and breathing mods, but heat is the enemy, so cooling and a proper supporting package matter more than headline figures.

Engine
2.5 I5 turbo · 2.3 EcoBoost
Drivetrain
AWD
Power (stock)
345-375 hp
Wheel bolt pattern
5x108
Chassis
Mk2/Mk3
Years
2009-present
Where to start

A tune with an intercooler and the cooling to back it is the base. The AWD hardware is strong, so put the rest into tyres and suspension rather than chasing boost.

What fits the Ford Focus RS

71 real parts across 12 categories, pulled from the Carmodfinder dataset. Counts are what actually fits this platform.

Engine Management

4 that fit
01mountune m330 (Mk3)ECU flash+50-85 hp
02Revo ECU flash / remapECU flash+50-85 hp
03Pumaspeed ECU flash / remapECU flash+50-85 hp
04Cobb ECU flash / remapECU flash+50-85 hp

Intake & Fuel

4 that fit
01mountune High-flow inductionIntake+7-20 hp
02aFe Power Cold air intakeIntake+7-20 hp
03Eventuri Cold air intakeIntake+7-20 hp
04Forge Cold air intakeIntake+7-20 hp

Exhaust

6 that fit
01Milltek Catted downpipeDownpipe+20-40 hp
02Wagner Tuning High-flow downpipeDownpipe+20-40 hp
03Cobra Sport High-flow downpipeDownpipe+20-40 hp
04Milltek Cat-backCat-back+7-20 hp
05Milltek Sport Cat-back systemCat-back+7-20 hp
06Remus Cat-back systemCat-back+7-20 hp

Suspension

10 that fit
01Eibach Lowering springsLowering springs
02Bilstein Coilover kitCoilover
03Mountune Lowering springsLowering springs
04Whiteline Adjustable drop linksDrop links
05ST Suspensions Coilover kitCoilover
06Ohlins Coilover kitCoilover
See all 10 suspension options that fit →

Wheels & Tyres

6 that fit
01Team Dynamics Pro RaceWheel
02H&R Wheel spacers (hubcentric)Spacers
0342 Draft Designs Hub-centric wheel spacersSpacers
04Eibach Hub-centric wheel spacersSpacers
05OZ Racing Aftermarket alloy wheelsWheel
06APEX Aftermarket alloy wheelsWheel

Brakes

12 that fit
01StopTech Big Brake KitBBK
02EBC / Endless Performance padsPads
03Goodridge Braided brake linesLines
04EBC Performance brake discsDiscs
05EBC Big brake kitBBK
06Brembo Big brake kitBBK
See all 12 brakes options that fit →

Drivetrain

2 that fit
01Black Forest Industries Short shifterShifter
02CAE Short shifterShifter

Cooling

6 that fit
01Airtec Front mount ICIntercooler
02Forge Performance radiatorRadiator
03CSF Performance radiatorRadiator
04Wagner Tuning Performance intercoolerIntercooler
05Forge Performance intercoolerIntercooler
06Mishimoto Performance radiatorRadiator

Chassis & Bracing

3 that fit
01Cusco / Ultra Racing Front strut braceStrut brace
02Ultra Racing Strut/chassis braceStrut brace
03Wiechers Strut/chassis braceStrut brace

Aero & Exterior

5 that fit
01Maxton Design Front splitterFront lip/splitter
02Maxton Design Side skirtsSide skirts
03Maxton Design Spoiler extensionDucktail/spoiler
04Rieger Aero componentFront lip/splitter
05Ingo Noak Tuning Aero componentFront lip/splitter

Interior

7 that fit
01Bride / Recaro Bucket seat + railsSeats
02Momo / Nardi Steering wheel + bossSteering wheel
03- Short shifterShifter
04Cobra Bucket seatSeats
05Sparco Bucket seatSeats
06Nardi Steering wheelSteering wheel
See all 7 interior options that fit →

Lighting & Styling

2 that fit
01- Window tintTint
02- Vinyl wrap / resprayWrap

Where the law bites

Fitment is one question, road-legality is another. These depend on where you drive.

Check the Focus RS build in the garage

More car mod guides

Understand the parts

Parts and fitment shown for the Ford Focus RS come from the Carmodfinder dataset and are a starting point, not a guarantee for your exact trim, year or market. Always confirm fitment and road-legality for your specific car before buying.