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This is the entry-level CMST carbon-fibre upgrade for the Audi S3 (8V): a carbon front lip and a matching carbon rear lip that bolt onto the factory bumpers without any widebody work. It is the lightest-touch styling path for the S3 saloon and Sportback — two pieces, no panel replacement, no paint required — and it is aimed at owners who want the standard car looking sharper and more purposeful rather than fully transformed. For drivers weighing a subtle refresh against a full conversion, this is the "where to start" build.

• Vehicle: Audi S3 (8V) saloon and Sportback; suits A3 with S-line bumpers
• Fitment years: 8V generation (2013-2020) — confirm pre- or facelift bumper
• Material: Carbon fibre, gloss-lacquered twill weave
• Key pieces: Front lip (under standard bumper), rear lip / valance
• Finish: Exposed carbon — no paint required
• Install type: Add-on, reversible — bolts and adhesive to factory panels

The S3's appeal has always been understatement: quattro grip and a quick 2.0 TFSI in a body most people read as an ordinary A3. That understatement is exactly why a light carbon refresh works so well — you do not need to shout to sharpen this car. Here is what the two-piece kit changes, why carbon is the right material even for a small upgrade, and how it fits.

The carbon front lip

The front lip is the single most effective styling change you can make to an S3. It mounts to the lower lip of the factory front bumper and extends the chin forward and down, which lowers the visual height of the nose and gives the front a splitter-style edge the standard car lacks. On the S3 the lip is shaped to follow the existing bumper contours, so it reads as a factory sports option rather than an add-on. Because it sits below the original bumper, parking sensors, the number-plate mount and the lower grille all stay exactly as they were.

The exposed twill weave does something a painted lip cannot: it draws the eye to the lowest edge of the car and adds a layer of material interest against the paint. On a dark S3 it reads as a subtle detail; on a bright colour like red or Ara Blue it provides a deliberate contrast strip along the leading edge.

The carbon rear lip

The rear lip is the front lip's natural partner. It caps the lower edge of the rear bumper and adds depth and definition to the back of the car, balancing the lowered look the front lip creates. Fitting only the front lip can leave the rear looking comparatively tall and plain; the matching carbon rear lip restores the balance front to back. Together the two pieces give the S3 a lower, more planted stance from every angle without touching the arches or bumpers themselves.

Why carbon fibre for a light upgrade

It might seem like overkill to use carbon for just two pieces, but the logic holds. Carbon fibre is stiff, so a lip holds its shape and edge at speed and resists the sag and rattle that afflict softer plastic lips over time. It is light, which keeps the addition honest on a car Audi tuned for balance. And the lacquered weave is a genuine finish — it does not need painting, so there is no colour-matching step and no risk of a slightly-off paint shade. For an owner who wants the upgrade to look permanent and well-made rather than like a temporary accessory, carbon is the material that delivers that.

If you later decide you want more, these pieces are a natural first stage. CMST also develops a full widebody conversion for the S3, so the carbon front and rear lips can be the start of a longer build rather than the end of one. Our CMST body kit collection for Audi lists the individual S3 pieces, and the broader body kit range shows how a staged build can progress from lips to a full conversion.

Fitment and finish

This is an add-on, reversible kit — one of its main attractions. Both lips mount to the factory bumpers using a combination of automotive-grade adhesive tape and fixings into existing points; nothing is cut, so the car can be returned to standard. That makes the kit a sensible choice for leased or financed S3s where permanent modification is a problem.

A couple of practical points. The front lip sits lower than the standard bumper, so steep driveways and aggressive speed humps need a careful approach angle — the carbon edge is worth protecting. And the lacquered carbon should be treated like paint: wash it gently and apply a UV-protective sealant once or twice a year so the weave stays clear under Australian sun. Professional fitment helps get the lip-to-bumper gaps even on both sides, which is what separates a clean install from an obvious one.

The entry-level CMST S3 kit is a carbon front lip and matching rear lip for the 8V Audi S3. Both bolt to the factory bumpers with no widebody work and no paint, lowering and sharpening the standard car while keeping it fully reversible.

Frequently asked questions

Which Audi S3 do these carbon lips fit?

They suit the 8V-generation Audi S3 (2013-2020) in both saloon and Sportback forms, and an A3 with the S-line front and rear bumpers. The bumpers differ between the pre-facelift and facelift S3, so confirm your model year and bumper variant before ordering.

Do I have to paint the carbon lips?

No. The lips are supplied in an exposed gloss-lacquered carbon weave and are designed to be fitted as-is. There is no colour-matching step, which is part of what makes this a quick, clean upgrade compared with a painted kit.

Is this a full body kit?

No — it is a two-piece carbon front and rear lip set. It keeps the factory bumpers and arches and is the lightest styling option for the S3. CMST also offers a full S3 widebody conversion if you later want a bigger change; these lips can be the first stage of that build.

Will the front lip survive Australian driveways?

The lip lowers the front edge, so steep crossovers and speed humps need a measured approach angle. It is no lower than many factory sports lips, but carbon edges are worth protecting — approach ramps slowly and at an angle, and have the kit fitted professionally so clearance is even on both sides.

Can I fit just the front lip?

You can, and it is the single most effective change. Most owners add the rear lip too, because fitting the front alone can leave the rear looking tall by comparison. The pair gives a balanced lowered look front to back.

Is the kit reversible?

Yes. Both lips attach to the factory bumpers with adhesive and existing fixings, and nothing is cut, so the S3 can be returned to standard. That makes it well suited to leased or financed cars.

Want to sharpen your S3 without committing to a full build? Browse the CMST body kit collection for Audi at AME Motorsport, explore the full CMST range at AME Motorsport, or ask our team which carbon lips suit your exact S3 model year.