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ST Trackparts
Premium BMW Track Parts — Brake Cooling, Aero & Reinforcements
ST Trackparts is a Netherlands-based manufacturer of high-performance parts for BMW track and race cars — brake cooling kits, aero, ducting, reinforcements and weight-saving hardware, all made by people who track their own cars. Every part is real-world tested at track days and engineered chassis-specific for clean, OEM-level fitment, from the classic E30 and E36 right up to the latest G8X M cars (plus MINI).
In the UK, ST Trackparts is stocked domestically by R44 Performance — so you skip EU shipping delays and import handling, with expert BMW fitment support before you buy. (Not to be confused with ST Suspensions — a separate company; ST Trackparts does not make coilovers.)
Shop by part type
ST Trackparts BMW Brake Cooling, Aero & Track Parts
ST Trackparts builds a focused, enthusiast-led catalogue of around 200 track parts for BMW M and performance cars. Everything is designed, tested and shipped from the Netherlands, and validated on the company’s own cars at track days before it ever ships to yours. The result is a range engineered around three things that matter on track: keeping the brakes cool, adding real aerodynamic downforce, and saving weight — without the guesswork of universal parts.
Brake cooling — the core of the range
Brake cooling is where ST Trackparts started, spanning complete kits, aluminium cooling plates and a full ducting system. Front kits use the fog-light or bumper housings, control-arm duct kits maximise airflow, and OEM-style funnel kits feed air straight to the disc. The flagship M4 GT4 Brake Cooling Kit for the F80 M3 / F82 M4 replicates the OEM BMW M4 GT4 race-car ducting and ships complete with bumper ducts, cutting templates, aluminium backing plates and all hoses, clamps and hardware — reducing brake fade and extending pad and disc life on track day.
Aero, aerodiscs & weight saving
The aero range is the largest category: front splitters such as the E36 High Downforce Splitter Kit, canards and dive planes in standard and carbon fibre, underbody flaps, and fender and hood vents. Aerodiscs smooth airflow around popular track wheels (Motec, Japan Racing, Konig, APEX, BBS and more), while lightweight door-pull strap conversions — including the best-selling M2 G87 kit — shave interior weight and add a race-style pull.
BMW chassis coverage — E30 to G8X, plus MINI
Coverage runs across nine BMW generations: E30, E36, E46, E8X (1 Series / 1M), E9X (incl. E9x M3), F2X (incl. M2 F87), F8X (F80 M3, F82/F83 M4, F87 M2), G8X (G80/G82/G83 M3/M4, G87 M2) and selected MINI hardware. Parts are engineered per chassis for clean, snug fitment, and where trimming is needed the kits ship with cutting templates and step-by-step guides so you can fit them in your own garage in an afternoon.
Buying ST Trackparts in the UK
Because ST Trackparts ships from the EU, UK buyers can face import duties and customs handling. R44 Performance stocks ST Trackparts domestically in the UK, avoiding EU shipping delays and import charges, with tracked delivery and expert BMW fitment advice before you buy. ST Trackparts is a specialist track-parts maker and is not connected to ST Suspensions — it does not produce coilovers or springs.
Engineered for fitment
Why ST Trackparts
Real-world tested
Every part is developed & proven on track ensuring a meaningful upgrade for your car.
Chassis-specific fitment
Modelled to each BMW platform for clean, snug and precise fitment.
Guided install
Step-by-step guides so you can fit it in your own garage in an afternoon.
Real support
Talk to people who know the cars. Fitment questions answered before you buy.
UK stock via R44
Stocked domestically in the UK — no EU shipping delays or import handling.
Watch Our Review
ST Trackparts in Action
Questions, answered
ST Trackparts FAQs
Is ST Trackparts the same as ST Suspension? +
No — they are completely separate, unrelated companies. ST Suspensions makes coilovers and springs (owned by KW Automotive). ST Trackparts is a Netherlands-based BMW track-parts manufacturer focused on brake cooling, aerodynamics, ducting, reinforcements and interior/exterior track hardware. ST Trackparts does not make suspension.
Which BMWs does ST Trackparts fit? +
The range covers nine BMW generations plus MINI: E30, E36, E46, E8X (1 Series / 1M), E9X (incl. E9x M3), F2X (incl. M2 F87), F8X (F80 M3, F82/F83 M4, F87 M2) and G8X (G80/G82/G83 M3/M4, G87 M2). Coverage is deepest on the modern F8X and G8X M cars. Use the product-type filters and product pages above to confirm fitment for your exact chassis.
What is the M4 GT4 Brake Cooling Kit? +
It’s ST Trackparts’ flagship brake-cooling kit for the F80 M3 and F82 M4, replicating the OEM BMW M4 GT4 race-car ducting. It ships as a complete kit with bumper ducts, cutting templates, aluminium backing plates and all hoses, clamps and hardware — designed to reduce brake fade and extend pad and disc life on track.
Will I need to cut my car to fit the parts? +
Some kits — particularly brake cooling and aero — require minor trimming for airflow. Where cutting is needed, ST Trackparts supplies cutting templates in the kit and step-by-step guides so the work is straightforward. Many parts are a direct bolt-on with no cutting at all.
Can I install ST Trackparts myself? +
Yes. Kits are designed for DIY fitting in your own garage in an afternoon, and ship with step-by-step installation guides. Pre-sale fitment support is also available — if you’re unsure, ask before you buy.
Do I have to pay EU import duty if I’m in the UK? +
Not when you buy through R44 Performance. ST Trackparts ships from the Netherlands, so ordering direct can mean import duties and customs handling for UK buyers. R44 Performance stocks ST Trackparts domestically in the UK, so you get tracked UK delivery with no EU shipping delays or import charges.
Are the parts really track tested? +
Yes — that’s the core of the brand. Every part runs on ST Trackparts’ own BMWs at track days before it ships to customers, so designs are validated in genuine use rather than only in CAD.
What is the returns and warranty policy? +
Items can be returned within 30 days of receipt if unused and in original packaging with proof of purchase; custom, personalised and sale items are non-returnable. For UK orders placed with R44 Performance, our own returns and support team will handle it — just get in touch and we’ll help.