Mercedes-Benz W205 (2014-2021) Prepreg Dry Carbon Fiber Rear Diffuser

Engineered for Mercedes-Benz W205 C-Class (2014-2021, non-C63 trims) owners, this Prepreg Dry Carbon Fiber Rear Diffuser brings AMG-inspired race aesthetics to your Sedan/Coupe/Wagon/Cabrio. Manufactured in Europe and quality-controlled by BYC Performance, this Mercedes W205 carbon rear diffuser bolts directly to OEM mounting points.

Autoclave-cured prepreg carbon is noticeably lighter than wet-lay parts, with superior structural integrity and outstanding UV resistance. Designed for the full non-C63 W205 range, from base C180/C200/C220 through C300/C400/C450/C43.

Key Features

• Prepreg Dry Carbon Technology: Autoclave cured under high heat and pressure — a more consistent weave.
• AMG-Style Inspired Design: Race-bred diffuser channels, noticeably lighter than OEM plastic.
• High Strength: Carbon fiber offers very high strength for its weight.
• Aerodynamic Performance: Optimized channels accelerate underbody airflow.
• 2x2 Twill Carbon Weave: Natural carbon weave under UV-protective clear coat.
• Direct OEM Fit: Direct bolt-on for non-C63 W205 (2014-2021) rear bumper.
• UV & Chemical Protection: Long-life fade resistance.

Prepreg Dry Carbon vs. Wet Carbon

• Cured in autoclave under 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

Vehicle Fitment

This W205 non-C63 carbon rear diffuser fits:

• Mercedes-Benz C180/C200/C220/C250 (W205, 2014-2021) — Sedan/Coupe/Wagon/Cabrio
• Mercedes-Benz C300/C350e/C400/C450 (W205, 2014-2021)
• Mercedes-AMG C43 (W205, 2016-2021) — M276 3.0L V6 biturbo, 367-390 hp AWD

Important notes:

• NOT compatible with C63 W205 (M177 4.0L V8 biturbo) — C63 has a different rear bumper geometry; a separate C63 carbon diffuser is available in our catalog.
• NOT compatible with W206 (2022+).
• NOT compatible with W204 (2007-2014).
• Our catalog includes two distinct W205 rear diffuser versions; this is the v1 (classic geometry) version.

Technical Specifications

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

Installation Notes

1. Raise the vehicle and remove rear bumper underbody screws.
2. Detach OEM plastic diffuser.
3. Test-fit the carbon diffuser for alignment.
4. Secure with supplied hardware to the manufacturer's recommended torque.

Care & Maintenance

Wash with pH-neutral shampoo. Apply carbon-safe sealant every 6 months.

FAQ

Compatible with C63 W205?
No. C63 has a different rear bumper; a separate C63 carbon diffuser is available.

Compatible with W206 (2022+)?
No.

Compatible with W204 (2007-2014)?
No.

What is the second W205 rear diffuser version?
Our catalog has a v2 W205 rear diffuser with different styling. Choose based on style preference.

Compatible with C43 AMG?
Yes. C43 shares the non-C63 rear bumper geometry.

Will rain damage dry carbon?
No.

Shipping time?
1-3 business days.

Warranty?
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.