A body kit is the single biggest visual transformation you can make to an Audi A4, and it's one of the most-searched styling upgrades among A4 owners in the UK. This buyer's guide covers what a full body kit actually includes, how to pick the right one for your B7, B8, B8.5, or B9 A4, and what to check before you buy.
What's in a Full Body Kit
Most "full" body kits for the A4 are sold as a set of individual panels rather than one single part, typically including:
- Front splitter or full front lip — sharpens the front bumper profile
- Side skirts — lowers the visual stance along the sills
- Rear diffuser — fills out the lower rear bumper and pairs the car with a more aggressive rear stance
- Rear spoiler or boot lip (sometimes sold separately)
You can buy these as a bundled kit or piece by piece — piece by piece is often the better approach if you already like your factory bumper and just want to sharpen specific areas, or if you're budgeting the upgrade over a few months.
Confirming Fitment for Your A4
The A4 has gone through several distinct generations, and panels are not interchangeable between them:
- B7 (2004–2008) — oldest shape still commonly modified, distinct bumper profile
- B8 (2008–2012) and B8.5 (2012–2016) — facelifted B8.5 has different lower bumper vents to pre-facelift B8, so kits are not always shared
- B9 (2016+) — current-shape A4, with S-line and standard bumpers requiring different kits
Always confirm your exact generation and bumper trim (S-line vs standard) before ordering — this is the single most common fitment mistake we see.
Material Choice: ABS vs Carbon Fibre
ABS plastic kits are the practical choice for a daily-driven A4 — durable, flexible enough to absorb minor knocks, and significantly cheaper to replace if damaged. Carbon fibre kits are lighter and give a premium finish, but panels are more brittle and considerably more expensive to repair after kerb or stone damage. If your A4 is a daily driver rather than a show car, ABS is the more practical starting point.
Fitting Overview
- Confirm every panel matches your exact generation and bumper trim before starting.
- Remove any factory under-trays or splash guards that overlap with the new panels.
- Dry-fit each panel before committing to adhesive or drilling.
- Fix side skirts and splitter using the supplied clips plus automotive-grade double-sided tape for a secure, rattle-free finish.
- Torque any bumper fixings back to spec once panels are in place.
Shop Audi A4 Body Kit Parts
We stock front splitters, side skirts, and rear diffusers for B7, B8, B8.5, and B9 Audi A4 models. Browse the full range in our Audi A4 collection to find parts matched to your exact generation.