BMW M3 G80 / M4 G82 Prepreg Dry Carbon Fiber Side Skirts

Engineered for BMW M3 G80 and M4 G82 owners, these Prepreg Dry Carbon Fiber Side Skirts drop the visual centerline and shape side airflow for a more aggressive profile. Manufactured in Europe and quality-controlled by BYC Performance, these BMW G80 / G82 carbon side skirts bolt directly to OEM rocker clips with no cutting required. Sedan-length and Coupé-length variants are available for M3 G80 Sedan and M4 G82 Coupé/G83 Convertible respectively.

If you're building a serious BMW M3 G80 tuning or M4 G82 modification project and want a side profile that completes the aero kit, these dry carbon side skirts are built for you. Autoclave-cured prepreg carbon is lighter, stronger, and more UV-resistant than the OEM plastic rocker trim. Fits all S58-powered current-generation cars — M3 G80 Sedan, M3 Touring G81, M4 G82 Coupé and M4 G83 Convertible (473-543 hp) — across every trim, including Competition, CS and CSL, in the correct door-length variant.

Key Features

• Prepreg Dry Carbon Technology: Cured in an autoclave under high heat and pressure.
• Aggressive Splitter Line: Lowers the visual centerline and channels side airflow.
• Sedan/Coupé Variants: Longer variant for M3 G80 Sedan and M3 Touring G81; shorter variant for M4 G82 Coupé and M4 G83 Convertible.
• High Strength: Carbon fiber offers very high strength for its weight.
• 2x2 Twill Carbon Weave: Authentic carbon pattern under high-gloss UV-protective clear coat.
• Direct OEM Fit: Bolts to OEM rocker clip and bracket points; no cutting or bonding required.
• Stone-Chip Resistant: Carbon structure handles road debris better than the OEM plastic rocker.

Prepreg Dry Carbon vs. Wet Carbon — Which Is Better?

Most aftermarket carbon parts are made using wet lay-up, where resin is applied by hand and cured at room temperature — leaving air voids and inconsistent weight. Prepreg dry carbon:

• Cured in an autoclave under high heat and pressure → a more consistent weave
• A controlled resin ratio → lighter and stronger
• The production method widely chosen in motorsport
• Minimal UV fading over years of use

Vehicle Fitment

These BMW G80 / G82 carbon side skirts fit the following models (select correct variant at checkout):

• BMW M3 G80 Sedan (2021, 2022, 2023, 2024, 2025) — Sedan variant — S58 (473 hp)
• BMW M3 Competition G80 (2021+) — Sedan variant — S58 (503 hp)
• BMW M3 CS G80 (2023+, limited) — Sedan variant — S58 (543 hp)
• BMW M3 Touring G81 (2022+) — Sedan/Touring variant — S58 (503 hp)
• BMW M4 G82 Coupé (2021+) — Coupé variant — S58 (473/503 hp)
• BMW M4 Competition G82 (2021+) — Coupé variant — S58 (503 hp)
• BMW M4 CSL G82 (2022-2023, limited) — Coupé variant — S58 (543 hp)
• BMW M4 G83 Convertible / Cabriolet (2021+) — Coupé variant — S58 (503 hp)

NOTE: These skirts are NOT compatible with the previous-generation BMW M3 F80 / M4 F82 (S55) or BMW M2 G87. The F-generation and M2 G87 use different door and rocker geometry.

Technical Specifications

• Material: Prepreg Carbon Fiber (2x2 Twill Weave)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave black
• Origin: Europe

Installation Notes

Side-skirt installation uses OEM clips and screws. Professional installation recommended:

1. Raise the vehicle and remove the lower screws on the OEM plastic rocker.
2. Release the rocker clips and pull the original part.
3. Seat the new carbon skirt onto the clips.
4. Torque the screws to the manufacturer's recommended torque.
5. Open the doors and check gap clearance.

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Be careful near curbs and side debris.

FAQ

Compatible with both M3 G80 and M4 G82?
Yes — but Sedan (G80/G81) and Coupé/Convertible (G82/G83) door lengths differ, so you must select the correct variant at checkout. The design language is identical across variants.

Compatible with M3 CS / M4 CS / M4 CSL?
Yes. All G80/G82 trims (standard, Competition, CS, CSL) share the same rocker clip geometry.

Does it fit the BMW M2 G87?
No. M2 G87 uses different door and rocker geometry.

Compatible with M3 F80 / M4 F82 (previous gen)?
No. The F-generation uses different rocker geometry.

Are Sedan and Coupé variants visually identical?
Design language is the same; only the length differs. Sedan is longer, Coupé is shorter.

Shipping time?
In-stock items ship within 1-3 business days via partner couriers.

Warranty?
BYC Performance offers a 12-month manufacturer warranty.

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes BMW M3 carbon parts, BMW M4 carbon diffusers, Audi RS carbon hoods, Porsche carbon spoilers, and many more high-quality carbon components.