The G8x generation is the most-requested platform in our BMW catalog, partly because there are so many ways to modify it and partly because the differences between them are easy to get wrong when ordering. This guide sets out exactly what exists for the M3 G80 (2021+) and M4 G82/G83 (2021+), which pieces fit OEM bumpers, which pieces are part of a widebody conversion, and the checks worth doing before money changes hands.
G80 and G82: what actually differs
Mechanically they are close relatives, visually they are not. The M3 G80 is the saloon; the M4 G82 is the coupé and the G83 the convertible. Body-mounted parts — lips, skirts, diffusers — are not interchangeable between them. In our catalog that shows up as separate listings per platform, so order against the body style you own rather than the engine-and-chassis combination.
The other practical difference is the number of routes available. The G82 has the widest choice in the range, including the widebody kit; the G80 currently has a dedicated per-part dry carbon listing.
Route one: add-on parts that fit the OEM bumpers
BMW M4 G82 (2021+) Dry Carbon Add-on Parts (fits OEM bumpers) covers 14 pieces designed to mount to the factory bumper rather than replace it. That distinction matters if you like the standard car and simply want it lower and sharper, or if you want to keep the ability to return the car to stock.
BMW M4 G82 (2021+) Dry Carbon Add-on Parts (fits OEM bumpers)
BMW M4 G82 (2021+), OEM bumpers
Parts from $243
BMW M4 G82/G83 (2021+) Prepreg Dry Carbon Parts
BMW M4 G82/G83 (2021+)
Parts from $400
- Front lips in two designs, in three-piece and single-piece form
- Side skirts and canards for the front corners
- Rear lips, including a multi-piece version
- Roof spoiler or vent, a ducktail and a larger rear wing
- Trunk lid with integrated spoiler, and a race-style hood
- Front grilles and bumper vents for the front intake area
- Mirror caps, which are a replacement rather than a cover in this listing
Because these parts mount to the OEM bumpers, installation is genuinely bolt-on: no cutting, no bonding, no bodyshell modification. That makes this route the one most owners start with.
The ACC grille question
The grille in this listing is offered in two versions: for cars with ACC (active cruise control radar) and without. These are not interchangeable — order the version matching your car. If you are unsure, check whether your front bumper has the radar module behind the lower grille area, or send us your VIN and we will confirm.
Getting this wrong is the most common ordering mistake on modern BMWs, and it is avoidable with one photograph of the front bumper.
Route two: the G82 widebody kit
BMW M4 G82 (2021+) Widebody Kit is the largest package we offer for the platform: an eleven-part conversion with front and rear bumper assemblies, fender flares front and rear, side skirts, rear wing and grille, plus optional hoods priced separately.
| Piece | Role in the conversion |
|---|---|
| Front bumper assembly + grille + vents | Replaces the factory front end |
| Front lip and canards | Sit on the new bumper; note canards are for the bumper, not the widebody arches |
| Rear bumper + rear lip with corners | Completes the rear of the conversion |
| Front fender flares (4 pcs) and rear flares (2 pcs) | The widebody element itself — expect arch work |
| Side skirts | Ties the sill line between the flares |
| Rear wing, optional hoods | Visual finishing pieces, hoods priced separately |
This is a different job from bolting on a lip. Panel replacement and flare fitting belong in a body shop, and the total cost is dominated by labour and paint rather than by the kit itself: see our widebody installation guide for the full sequence.
Route three: per-part prepreg dry carbon
Both platforms have their own prepreg dry carbon listing with nine pieces each: BMW M3 G80 (2021+) Prepreg Dry Carbon Parts for the M3 G80 and BMW M4 G82/G83 (2021+) Prepreg Dry Carbon Parts for the M4 G82/G83. Each contains the same nine-item structure — front lip, front canards, front vent trim, hood, side skirts, rear diffuser, rear side splitter, rear canards and rear spoiler.
Everything here is prepreg dry carbon, which is the lightest construction we offer, and every part is priced individually so you can start with one piece and add to it. Both listings start at the same price point per part, which makes it easy to plan a package for a two-car garage.
Which route suits which build
| Your goal | Best route |
|---|---|
| Sharpen the standard car, no permanent changes | Add-on parts for OEM bumpers |
| Build up slowly, one piece at a time | Per-part dry carbon listings |
| Dramatic width change and a full respray anyway | G82 widebody kit |
| Track car or weight-sensitive build | Dry carbon hoods and large panels |
Routes can be combined — many owners run add-on aero with a dry carbon hood, for instance. Just check that pieces designed for the OEM bumper are not mixed with widebody conversion pieces, which assume the replacement bumpers.
Before you order: checklist
- Confirm body style: G80 saloon, G82 coupé or G83 convertible
- Decide add-on versus replacement pieces for each position
- Check whether your car has ACC before ordering any grille
- Decide whether hoods and wings are in scope now — they are the largest single line items
- Plan installation: bolt-on work versus body shop work, and whether paint is required
Browse the whole marque on the BMW page, or compare constructions in our material comparison guide.
