Audi RS3 Body Kit Styling Guide: From Stock to Standout with Carbon Fibre

The Audi RS3 8Y already looks amazing right out of the factory. But many owners want more. Sharper lines, more presence, a look that feels like it was built into the car rather than bolted on afterwards. Some owners want an Audi RS3 body kit to make their RS3 8Y look more aggressive. And at CT Carbon, that’s what our fibre parts and body kits can do.

The problem is, a lot of people considering Audi RS3 carbon fibre don’t know what goes into the process. How many parts come in a kit? Is it tape, adhesive, or screws holding it all on? Do you need a body shop, or can you do it on your driveway? Even confident car owners can lose confidence when the kit they ordered turns up in 8 boxes, and they don’t know where to start.

We made this guide to walk you through exactly what goes into a full Audi RS3 8Y body kit fitting, how each part is fitted and what your options are if you want someone else to handle styling.

One quick note before we start: Sportback and Saloon RS3s use different parts in a few key areas, so keep your body style in mind as you read. Also, if you’re interested in CT Design carbon kits and have a different model entirely, you can see our full collection here. 

What’s in the Full Carbon RS3 Body Kit?

Rear spoiler

The biggest visual change you can make to the rear of your RS3 8Y, a spoiler raises the tailgate line and sharpens the whole roofline. You can fit it using a combination of pre-applied tape and Tiger Seal adhesive, carefully spread for an even bond. Precision matters for this bit; if the alignment is even slightly off, you'll see a visible gap between your spoiler and the car. Also, lining the spoiler up flush before the adhesive grabs isn't a one-person job. We definitely suggest getting a second pair of hands.

Front splitter

The splitter widens and visually lowers the front end, giving your RS3 8Y a more planted stance. Fitting is refreshingly simple, just tape along the mounting edge, clean the surface and stick it into place. Then secure with the provided screws. As long as you can get the front of the car up in the air a little, this can be a driveway job.

Bumper ducts

These are small parts with a big impact on detailing, adding an aggressive, motorsport-inspired finish to the front bumper. Unclip the original parts with a firm pull, and your new carbon pieces will click straight back into the same factory mounting points.

Side skirts

Side skirts visually lower the car and tie the front and rear styling together along the profile. You’ve got two options for side skirts here: extensions or replacements. Extensions bond over your existing OEM skirts, while replacements swap the black plastic out entirely. Both can then be secured with screws, while the pre-applied tape helps position them correctly.

Rear diffuser

The diffuser is what gives the rear end that aggressive, motorsport stance. The original clips out along the bottom edge, and the new one clips back in. Secure with two extra screws per side, lining up precisely with the mounting holes underneath.

Side fender trim

These finish off the front three-quarters view of the car. You can bond them by spreading adhesive evenly across the surface. This is the part most likely to catch out a first-timer, too much in one spot, and it can seep out from under the trim. 

Sportback Vs Saloon – What’s the Difference?

Not every part is interchangeable between body styles. Sportback and Saloon RS3s use different spoiler shapes and different diffuser designs, and Saloon owners will need to remove the original factory spoiler before fitting a replacement.

Full kits vs individual parts

You don't have to commit to the entire look in one go. Every part in the range is available individually, so you can build the styling up over time. Finish is worth thinking about, too. A matte carbon fibre suits wrapped or satin-finish cars, while gloss carbon complements a factory paint finish. There's no wrong answer here, just a question of budget and whether you want to slowly build up to the full look.

Body Kit Fitting: See How We Do It

To show exactly what all of this looks like in practice, we filmed a full kit being fitted to a customer's RS3 8Y Sportback from start to finish: spoiler, splitter, side skirts, diffuser, and fender trims, all in one sitting.

DIY or Done For You: How Should I Handle Audi RS3 Carbon Fibre?

Here's the honest answer: Most of a full kit is genuinely achievable at home. Screws, clips, and pre-applied tape make up the majority of the fitting process, and with basic tools, a second pair of hands, and a bit of patience, most owners can fit the bulk of a kit themselves.

However, some parts, like the bonded spoiler and fender trims, reward experience simply because mistakes are visible and hard to undo. 

How you want your modifications fitted is up to you. Here are your 3 options:

1. Fit it yourself, using our fitting guides and videos as a reference.

2. Use one of our fitting network partners if you'd rather have someone local handle it.

3. Have it fitted at CT Carbon HQ, which is free on qualifying orders.

Whether you fit it yourself, send it to a trusted partner, or have our team handle it at CT Carbon HQ, the result is the same: a car that looks like it left the factory that way.

Explore our full Audi RS3 8Y carbon fibre range and build your ideal RS3 body kit with components designed for precise fitment and premium styling.