Ford Focus & Fiesta ST & RS
Home/ Shop by Make/ Ford/ Focus & Fiesta ST RS
FAST FORD
112 parts in stock
// Britain's favourite fast cars

Ford Focus & Fiesta ST & RS

From the five-cylinder Focus ST to the Mk8 Fiesta's three-pot, fast Fords are the backbone of the UK scene - cheap to buy, easy to work on, and transformed by software. Every ST and RS from the mid-2000s on lives here.

Exhausts & downpipesIntercoolersIntakesCoilovers & suspensionBrakesECU tuningStyling & aero
ModelsFocus ST/RS Fiesta ST
Engines2.5 I5 EcoBoost 1.5-2.3
Production2005 - 2023
LayoutFWD AWD (RS Mk3)
Mk2Focus ST & RS
2005-2011 2.5 turbo I5 225-305hp
The Volvo-derived five-cylinder - warbly, tough, and happy at 300+ (ST) / 380+ (RS) on bolt-ons.
Mk3Focus ST250
2012-2018 2.0 EcoBoost 250hp
Stage 1 ~290hp; intercooler and downpipe unlock the rest. Huge value today.
Mk3 RSFocus RS
2016-2018 2.3 EcoBoost 350hp AWD
Drift-mode icon. Maps to ~400hp; head gasket history checked, it's a weapon.
Mk4Focus ST
2019-2022 2.3 EcoBoost 280hp
The RS's engine detuned - software finds 60hp+, LSD from the factory.
Mk6/7Fiesta ST150 & ST180
2005-2017 2.0 NA / 1.6 EcoBoost
The ST180 is the modern classic: Stage 1 ~215hp, mountains of aftermarket.
Mk8Fiesta ST
2018-2023 1.5 EcoBoost I3 200hp
Three cylinders, huge character - maps to ~235hp with hardware support everywhere.
0 parts for Ford Focus & Fiesta ST & RSSort: Best-selling
No products found in this collection yet.
// Trusted on this platform
Top brands for fast Fords
// The platform

Maximum grin per pound

No platform delivers more smiles per pound than a fast Ford. The Mk2 Focus ST's five-cylinder is a tuner's old friend - simple, strong, sounds like half an Audi V10. The EcoBoost era made software the first mod: every ST from Fiesta to Focus gives up 30-60hp to a map, and the hardware path (intercooler, downpipe, intake) is proven on tens of thousands of UK cars. Maxton's styling ranges for these shapes are among the biggest they make.

The proven upgrade path

01
Stage 1
Map first, always - +40hp on an ST180, +40-60hp on the EcoBoost Focus STs, +70 on the I5s.
02
Stage 2
Intercooler and downpipe/de-cat with a matched map - EcoBoosts are heat-limited from the factory.
03
Chassis
Coilovers, ARBs and bushes - fast Fords respond to geometry like the hot hatches they are.
04
Beyond
Hybrid turbos on ST180/ST250, big singles on the I5 - scoped through our custom mapping.
// In-house ECU tuning
In-house ECU tuning for the EcoBoost & Duratec range
Stage 1-3 and custom mapping for the EcoBoost & Duratec range, all done in-house - the map to match the hardware above.
Explore ECU tuning →

Fast Fords - frequently asked

Do Focus and Fiesta parts interchange?

No - different platforms entirely, and even Focus generations differ substantially. The sidebar filter locks listings to your exact car; every product states its generation.

Is the Mk3 Focus RS head gasket issue real?

Early cars (2016) had a known head gasket fault, addressed under Ford's recall with a revised design. A documented fix - or a post-2016 build - and the 2.3 is thoroughly dependable, tuned or not.

Best first mod for a Fiesta ST180?

A Stage 1 map - around 215hp from 182, sharper throttle and more mid-range, for less than a set of tyres. Induction and a cat-back follow for sound; intercooler before Stage 2.

Do you offer ECU tuning in-house?

Yes - Stage 1-3 and custom ECU mapping are done fully in-house. We don't currently offer parts fitting, but we're happy to advise on your install.

// Browse the range

Fast Ford parts by category