BMW M5 F90 Forged Carbon Fiber Side Skirts

Engineered for BMW M5 F90 owners who demand a distinctive carbon finish, these Forged Carbon Fiber Side Skirts transform your sedan's side profile with an aggressive, modern silhouette while visually lowering the stance. Manufactured in Europe and quality-controlled by BYC Performance, this BMW M5 F90 forged carbon side skirt set (left + right) bolts to OEM mounting points with no cutting or modification required.

If you're building a serious BMW M5 F90 tuning project and want a carbon surface that goes beyond traditional 2x2 twill, these forged carbon side skirts are built for you. Produced via the chopped strand composite (CSC) method, forged carbon is compression-molded under high pressure — each piece features a unique, non-repeating random fiber pattern. The aggressive design pairs perfectly with the character of the S63B44T4 600-635 hp F90 M5.

Key Features

• Forged Carbon Technology: Chopped strand carbon composite compression-molded under high pressure; each piece features a unique, non-repeating pattern.
• Left + Right Pair Set: Matched L+R side skirt set, fitted to F90 M Sport bumper and sedan body.
• High Strength: Forged carbon resists stone chips and curb scrapes better than classic twill carbon.
• Visual Lowering: Visually drops the sedan profile and produces a more aggressive stance.
• Unique Surface Pattern: Random chopped fiber distribution makes every panel one-of-a-kind — no two parts are identical.
• Direct OEM Fit: Plug & play installation on factory F90 M5 (pre-LCI) side rocker mounting points.
• UV & Chemical Protection: Long-life clear coat protects against fading, cracking, fuel splash, and road tar.

Forged Carbon vs. Classic 2x2 Twill — What's the Difference?

Classic 2x2 twill prepreg carbon uses woven carbon cloth with a checkerboard pattern. Forged carbon (chopped strand composite):

• Chopped carbon fiber strands mixed with resin and compression-molded
• Cured under high heat and pressure → a more consistent weave
• Each piece features a unique random pattern — no two surfaces alike
• Conforms to complex shapes → sharper edge detail
• High impact resistance → superior to twill against stone strikes

Vehicle Fitment

This BMW M5 F90 side skirt set fits the following models perfectly:

• BMW M5 F90 Sedan (2018, 2019, 2020) — S63B44T4 V8 (600 hp)
• BMW M5 Competition F90 (2019, 2020) — S63 (617 hp)

Important notes:

• F90 is sedan-only — these skirts fit the F90 M5 Sedan body.
• This product is NOT compatible with the F90 LCI (2021+ facelift). LCI has different rocker geometry.
• This product is NOT compatible with BMW M5 F10 (previous-generation 2011-2017) or BMW M5 G90 (new-generation 2024+ hybrid).
• This product is NOT compatible with BMW M3 F80 / M4 F82 or BMW M3 G80 / M4 G82 — the M3/M4 family has different rocker geometry.

Technical Specifications

• Material: Forged Carbon Fiber (Chopped Strand Composite)
• Manufacturing: Compression Mold (High-Pressure Cure)
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural forged carbon random-pattern black
• Set Contents: Left + Right Side Skirts (2 pieces)
• Origin: Europe

Installation Notes

Installing the BMW M5 F90 side skirts is a direct replacement of the factory rocker trim. Professional installation is recommended:

1. Raise the vehicle and remove rocker undertray screws.
2. Detach the OEM side rocker trim from clips and bolts.
3. Test-fit the new forged carbon skirts for alignment.
4. Secure with supplied hardware to the manufacturer's recommended torque.
5. Verify both sides sit symmetrically at the same height (L+R level).

Care & Maintenance

Wash with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Keep pressure washer nozzle at least 30 cm from the surface.

FAQ

Does this fit the F90 LCI (2021+)?
No. The F90 LCI facelift has different rocker geometry. M5 F90 LCI owners should contact BYC for side-skirt availability.

Compatible with both standard M5 and M5 Competition?
Yes. This skirt set fits both 2018-2020 standard M5 F90 (600 hp) and 2019-2020 M5 Competition F90 (617 hp) — rocker geometry is identical across pre-LCI F90 trims.

Is this the same as the BMW M5 F10?
No. M5 F10 (2011-2017) is the previous generation with different body panels. M5 F10 owners should contact BYC for side-skirt availability.

Does it fit BMW M3 F80 / M4 F82?
No. M3 F80 and M4 F82 have different chassis and rocker geometry. Separate F-series M3/M4 carbon skirts are available.

Will both pieces have the same pattern?
No. Due to the nature of forged carbon, every panel is unique — left and right skirts will share a similar tone but differ in fiber distribution. This is the expected and desired character of forged carbon.

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

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

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 M5 carbon parts, BMW M3 carbon diffusers, Audi RS carbon hoods, Porsche carbon spoilers, and many more high-quality carbon components.