BMW M3 G80 / M4 G82 Prepreg Dry Carbon Fiber Engine Cover Set and Strut Brace

Engineered for BMW M3 G80 and M4 G82 owners, this combo package — Prepreg (Dry) Carbon Fiber Engine Cover Set and Strut Brace — transforms the engine bay to show-stand level while increasing chassis rigidity and steering precision. Autoclave-cured in Europe and quality-controlled by BYC Performance, the set bolts directly to OEM mounting points.

If you're building a serious BMW M3 G80 tuning or M4 G82 modification project and want both aesthetic and functional engine bay upgrades in a single package, this cover + strut brace combo is built for you. It transforms the engine bay of the S58-powered new-generation M3/M3 Touring/M4/M4 Convertible family (473 hp standard, 503 hp Competition, 543 hp CS/CSL) into an aggressive, premium showpiece.

Key Features

• Complete Combo Set: Engine top cover, battery cover, fuse box cover, and 3-point strut brace in one package.
• Prepreg (Dry) Carbon: Autoclave-cured carbon fiber with very high strength for its weight.
• Chassis Rigidity: Strut brace reduces tower flex — sharper, more linear steering feel.
• S58 Engine Bay Show-Stand: Replaces plastic OEM covers with full carbon-weave surfaces.
• OEM Fit: All parts bolt directly to factory mounting points — no cutting or drilling.
• UV & Heat Resistant: Autoclave resin holds up to engine bay temperatures and UV.
• Weight Savings: Noticeably lighter than OEM plastic covers.

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 → more homogeneous structure
• Controlled resin ratio → lighter and stronger
• A manufacturing method widely used in motorsport
• Long-term durability under engine bay temperatures

Vehicle Fitment

• BMW M3 G80 Sedan (2021, 2022, 2023, 2024, 2025, 2026) — S58 engine (473 hp)
• BMW M3 Competition G80 (2021+) — S58 (503 hp)
• BMW M3 CS G80 (2023+, limited) — S58 (543 hp)
• BMW M3 Touring G81 (2022+) — S58 (503 hp)
• BMW M4 G82 Coupé (2021+) — S58 (473/503 hp)
• BMW M4 CSL G82 (2022, limited) — S58 (543 hp)
• BMW M4 G83 Convertible (2021+) — S58

NOTE: The previous-generation BMW M3 F80 / M4 F82 (S55) uses a different plastic cover geometry and tower bolt layout — NOT compatible.

Technical Specifications

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

Installation Notes

1. Turn off the engine and allow it to cool.
2. Remove the OEM plastic engine cover, battery cover, and fuse box cover from clips.
3. Install carbon covers onto the same clips and bolts.
4. Mount the strut brace on the upper suspension tower bolts (torque: 22-25 Nm).
5. Close the hood and verify no contact gap.

Care & Maintenance

Clean carbon surfaces with pH-neutral car shampoo. Apply carbon-safe sealant every 6 months. Do not use solvents on a hot engine.

FAQ

Compatible with both M3 G80 and M4 G82?
Yes. M3 G80 Sedan, M3 Touring G81, M4 G82 Coupé and M4 G83 Convertible share the same S58 engine bay layout.

Compatible with M3 CS / M4 CSL / Competition?
Yes. All G80/G82 trims use the same engine bay cover and tower bolt layout.

Compatible with previous-gen F80 / F82?
No. F-generation engine bays use different plastic cover and tower geometry.

Is the strut brace stiffening noticeable?
Yes. Especially in turn-in, the steering feels more linear and precise.

Can carbon covers handle engine heat?
Yes. Autoclave prepreg carbon withstands engine bay temperatures.

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

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

Why BYC Performance?

BYC Performance is a Turkey-based performance tuning specialist sourcing premium carbon fiber and performance parts from leading European manufacturers and supplying them to the Turkish market. Our catalog includes BMW M3 G80 carbon parts, BMW M4 G82 engine bay sets, Audi RS carbon hoods, Porsche carbon spoilers, and many more high-quality components. All parts are produced with quality materials and undergo strict quality control.