BMW M3 G80 / M4 G82 / M2 G87 Prepreg Dry Carbon Fiber 3-Point Strut Brace

Engineered for BMW M3 G80, M4 G82, and M2 G87 owners, this Prepreg (Dry) Carbon Fiber 3-Point Strut Brace bridges the suspension towers in the engine bay with a triangulated carbon bar — increasing chassis rigidity, sharpening steering response, and delivering more linear turn-in behavior. Autoclave-cured in Europe and quality-controlled by BYC Performance, this brace bolts directly to OEM tower mounting points.

If you're building a serious BMW M3 G80 tuning, M4 G82 modification, or M2 G87 detail project and want both chassis rigidity and show-quality aesthetics, this 3-point carbon strut brace is built for you. The S58-powered new-generation M3/M4/M2 family (M2 G87 460 hp, M3 G80/M4 G82 473-543 hp) all share the same engine bay tower layout.

Key Features

• Prepreg (Dry) Carbon Fiber: 2x2 twill carbon autoclave-cured under high heat and pressure. More homogeneous texture, very high strength for its weight.
• 3-Point Geometry: Triangulated stiffening between left tower + right tower + central fuse/battery cover zone.
• Chassis Rigidity: Reduces tower flex — sharper, more linear steering feel.
• Lightweight: Noticeably lighter than an aluminum equivalent.
• S58 Engine Bay Fit: Bolts directly to factory tower bolts on M3 G80 Sedan, M3 Touring G81, M4 G82 Coupé, M4 G83 Convertible, and M2 G87.
• Show-Quality Carbon Weave: 2x2 twill carbon weave under high-gloss UV-protective clear coat.
• Direct OEM Fit: Plug & play — no cutting or drilling required.

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 — which can leave air voids and inconsistent weight. Prepreg (dry) carbon:

• Cured in an autoclave under high heat and pressure → more homogeneous texture
• Controlled resin ratio → lighter and stronger
• A manufacturing method widely used in motorsport
• Minimal UV fading over years of use

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
• BMW M2 G87 Coupé (2023+) — S58 (460 hp)

NOTE: The previous-generation BMW M3 F80 / M4 F82 / M2 F87 (S55) engine bay uses different tower geometry — NOT compatible.

Technical Specifications

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

Installation Notes

1. Turn off the engine and remove plastic upper engine covers (if present).
2. Mark and remove the upper suspension tower bolts.
3. Align the carbon strut brace with 3-point alignment.
4. Secure with supplied bolts (torque: 22-25 Nm, BMW spec).
5. Close the hood and confirm there is no contact gap.

Care & Maintenance

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

FAQ

Compatible with M3 G80, M4 G82, and M2 G87?
Yes. All three share the same S58 engine bay layout and identical tower bolt locations.

Compatible with M3 CS / M4 CSL / Competition trims?
Yes. All S58-based G80/G82 trims (standard, Competition, CS, CSL) share the same tower geometry.

Does it fit the previous-generation F80 / F82 / F87?
No. F-generation is S55-powered with different tower geometry.

What's the difference between 3-point and 4-point?
3-point provides triangulated stiffening; 4-point adds a central tie to also reduce vertical flex. The 4-point is preferred for track-focused use.

Does it add visible horsepower?
No. A strut brace is a chassis/handling part — improves turn-in response, but does not add power.

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 strut braces, BMW M2 G87 detail parts, Audi RS carbon hoods, Porsche carbon spoilers, and many more high-quality components. All parts undergo strict quality control.