The Fiesta ST has quietly been one of the UK's favourite budget hot hatches for over a decade, and it's also one of the few cars in our range where we stock all three core styling categories — spoiler, splitter and diffuser — giving MK7 and MK7.5 ST owners the closest thing we offer to a full front-to-back package. The standard (non-ST) MK7 and the newer MK8 ST Line are covered too, though with a narrower parts list.
Rear Roof Spoilers: MK7/MK7.5 (2008-2019)
For the MK7 and facelifted MK7.5, we stock an 'ST Look' rear roof spoiler in gloss black ABS, plus the same shape in a carbon-fibre-pattern finish. This fits both 3-door and 5-door bodyshells, though fitting it does mean the rear windscreen washer jet will no longer function — worth knowing before you commit, as it's a permanent trade-off of this style of roof spoiler rather than a fitting fault.
Front Splitters: MK7 ST (2012-2017)
For the ST-spec MK7, we stock a dedicated front splitter in gloss black, built specifically around the ST's more aggressive front bumper. We also stock a separate front splitter for the standard (non-ST) MK7 bumper shape, so whichever spec your Fiesta is, there's a splitter built for the correct bumper rather than a generic one-size-fits-all part that never quite lines up.
Rear Diffuser: MK7 ST (2012-2017)
This is the part that sets the Fiesta apart from most of our other model guides: a rear diffuser lip/valance specifically for the ST-spec MK7, designed to sit beneath the rear bumper and add the layered, motorsport-style look that a spoiler and splitter alone can't achieve. Combined with the ST splitter above, this gives ST owners a genuine front-and-rear styling package rather than a single isolated part.
MK8 ST Line (2017-2020)
For the newer MK8, we currently stock a front splitter for ST Line-spec cars in gloss black. Parts coverage for the MK8 is narrower than the MK7/MK7.5 at present, so ST Line owners after a rear spoiler or diffuser to match should check back with us as we continue expanding this range.
Gloss Black vs Carbon Fibre
On the MK7/MK7.5 roof spoiler, both finishes are available. Gloss black is the more versatile choice and works on any exterior colour, mirroring what Ford themselves offered as an ST option. The carbon-fibre-pattern finish is a printed ABS finish rather than genuine carbon fibre, and suits Fiestas already running a black roof, black alloys or other dark exterior trim, where it ties the whole look together rather than sitting as a one-off addition.
Fitting Notes
All parts are supplied with 3M automotive adhesive tape for a no-drill fit. The front splitter and rear diffuser both sit lower than the factory bodywork, so on a small hatchback like the Fiesta — which sees plenty of speed bumps and steep driveways in daily use — we'd recommend a careful approach angle at kerbs and a realistic look at your daily routes before fitting both together. Splitters and diffusers are the two parts most likely to take a knock on a low-riding hot hatch, so many ST owners choose to fit them slightly less aggressively proud than shown, prioritising ground clearance over the absolute lowest look.
Frequently Asked Questions
Will the ST splitter fit a standard Zetec or Titanium Fiesta?
No — it's built for the ST's specific front bumper. We stock a separate splitter for the standard MK7 bumper shape, so check which you need before ordering.
Does fitting the roof spoiler disable my rear wiper too?
No, only the rear washer jet is affected — the wiper itself continues to work as normal.
Can I fit the splitter, diffuser and spoiler all together?
Yes, on the MK7 ST all three are designed to work together as a coordinated look, and most ST owners building a full styling package fit all three.
Is the diffuser likely to scrape on speed bumps?
Any diffuser or splitter sits lower than the standard bumper line, so care is needed over speed bumps, kerbs and steep driveway approaches.
Shop Ford Fiesta Parts
Browse the full range of Ford Fiesta styling parts, covering MK7, MK7.5 and MK8 ST models, in our Ford Fiesta collection.