BMW 3 Series G20 Prepreg Dry Carbon Fiber TKD Side Skirts

Engineered for BMW 3 Series G20 owners, this Prepreg Dry Carbon Fiber TKD Side Skirt set (left + right) brings flowing tuning style to your sedan and adds dynamic visual length to the side profile. Manufactured in Europe to factory-spec tolerances and quality-controlled by BYC Performance, this BMW G20 carbon side skirt set mounts directly beneath the factory rocker with no cutting or modification required.

The TKD-style skirt features smoother, more aerodynamic curved transitions than the KR variant — an ideal choice for G20 drivers seeking refined tuning aesthetics. Compatible with every G20 engine — from the B48 in the 320i and 330i to the 382 hp B58 inline-six in the M340i — this set is a premium visual upgrade for your BMW G20 build.

Key Features

• Left + Right Set: Matched pair shipped together; mounts beneath the OEM rocker panel.
• TKD Aftermarket Style: Tuning-focused design with smooth, dynamic transition lines.
• Prepreg (Dry) Carbon Technology: Cured in an autoclave under high heat and pressure; homogeneous resin distribution, a more consistent weave.
• Lightweight: Carbon fiber construction is light yet exceptionally strong.
• 2x2 Twill Carbon Weave: Authentic carbon pattern under high-gloss UV-protective clear coat.
• OEM Rocker Compatible: Direct adhesive/screw mount beneath factory rocker; does not replace the OEM rocker panel.
• UV & Chemical Protection: Long-life clear coat protects against fading, cracking, and road grime.

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

Most aftermarket carbon parts use wet lay-up: resin applied by hand and cured at room temperature, leaving 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

This BMW 3 Series G20 TKD side skirt set fits:

• BMW 320i G20 Sedan (2019, 2020, 2021, 2022) — B48 2.0L
• BMW 330i G20 Sedan (2019, 2020, 2021, 2022) — B48 2.0L (255 hp)
• BMW 330e G20 Sedan (Hybrid) — B48 + electric
• BMW M340i G20 Sedan (2019, 2020, 2021, 2022) — B58 3.0L I6 (382 hp)
• BMW 320d / 330d G20 Sedan (diesel variants)

Important notes:

• Best visual match with the M Sport bumper trim. Luxury Line and Sport Line rockers are also compatible, but front/rear bumper transitions may look different.
• NOT compatible with G20 LCI (2023+ facelift). LCI has different rocker geometry.
• NOT compatible with BMW M3 G80. The M3 G80 uses different rocker width and fender flare geometry.
• BMW 3 Series G21 Touring (wagon) compatibility — please confirm before ordering.

Technical Specifications

• Material: Prepreg Carbon Fiber (2x2 Twill Weave)
• Manufacturing: Autoclave Cure
• Finish: High-Gloss Clear UV-Protective Resin
• Color: Natural carbon weave black
• Quantity: Left + Right set (2 pieces)
• Style: TKD aftermarket tuning
• Origin: Europe

Installation Notes

Installing the BMW G20 carbon side skirts uses an adhesive + screw combination beneath the OEM rocker. Professional installation is strongly recommended:

1. Clean the rocker underside with isopropyl alcohol and dry thoroughly.
2. Test-fit the carbon skirt and check gap alignment.
3. Apply 3M double-sided tape and use the supplied hardware.
4. Torque screw points to the manufacturer's recommended torque.
5. Allow the adhesive to cure for 24 hours; do not wash for 48 hours.
6. Verify alignment with front and rear bumper transitions.

Care & Maintenance

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

FAQ

What's the difference between TKD and KR side skirts?
Both are aftermarket tuning styles. TKD features smoother, curved transitions while KR has sharper front/rear edge lines. Both mount beneath the factory rocker.

Does this fit the G20 LCI (2023+)?
No. G20 LCI has different side rocker geometry.

Compatible with 320i, 330i and M340i?
Yes. Fits all G20 Sedan engine variants (gasoline and diesel).

Is this the same as the BMW M3 G80?
No. The M3 G80 uses different rocker width and fender flare geometry; this set is designed for the standard G20 body only.

Will it fit without the M Sport bumper?
Yes, the skirt mounts to the OEM rocker. However, M Sport front/rear bumpers are recommended for visual cohesion.

Is adhesive mounting secure?
Yes. Automotive-grade 3M VHB tape is combined with mechanical screw points; safe for normal use after 24-hour cure.

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

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