Karbonius CSL Carbon Strut Brace - BMW G87 M2, G80/G81 M3, G82/G83 M4

Name: Karbonius CSL Carbon Strut Brace - BMW G87 M2, G80/G81 M3, G82/G83 M4
Brand: Karbonius

MPN: G8XSB02 - 1x1 GLOSS

Set your vehicle to confirm fitment — see full vehicle fitment

From $2,995.00

Where to buy

Evolve Automotive$2,995.00
In Stock
Calculated at checkoutPrice not confirmed · listed Aug 30, 2026View (opens Evolve Automotive in a new tab)

Overview

Easy install

Premium hand-crafted carbon fiber strut brace designed for BMW G-series M cars (G87 M2, G80/G81 M3, G82/G83 M4). Features monoblock tubular construction with 100% carbon fiber prepreg laminate including high-modulus unidirectional fabric, 6061 aluminum machined chassis joints, and OEM-quality fitment. Weighs 1.8 kg versus 3.5 kg OEM, providing significant weight reduction while maintaining structural rigidity. Manufactured in Spain under ISO 9001:2015 standards using 3D scanning, autoclave curing, and robotic cutting. Customizable gloss or matte varnish finish with 1×1, 2×2, or 4×4 carbon weave options. Includes 2-year warranty.

Specifications

Type: Strut Mount

Vehicle Fitment
11 configurations

BMW M2Likely fits — confirm with retailer(G87)
S58
2023–2025
BMW M2Likely fits — confirm with retailer(G87)— CS
S58
2026
BMW M3Likely fits — confirm with retailer(G80)— Competition
S58
2021–2026
BMW M3Likely fits — confirm with retailer(G80)— Competition xDrive
S58
2022–2026
BMW M3Likely fits — confirm with retailer(G80)— Base
S58
2021–2026
BMW M3Likely fits — confirm with retailer(G80)— CS
S58
2024
BMW M4Likely fits — confirm with retailer(G82)— Competition
S58
2021–2025
BMW M4Likely fits — confirm with retailer(G82)— CS
S58
2025
BMW M4Likely fits — confirm with retailer(G82)— Competition xDrive
S58
2022–2025
BMW M4Likely fits — confirm with retailer(G82)— CSL
S58
2023
BMW M4Likely fits — confirm with retailer(G83)— Competition xDrive Convertible
S58
2022–2024

Installation summary

This easy installation requires basic mechanical skills and can be successfully completed by most DIY enthusiasts in about 45 minutes using standard hand tools and a torque wrench to secure the 6061 aluminum chassis joints to factory specifications. You will need spring perch tools if your vehicle is equipped with aftermarket coilovers requiring ride height adjustments, and keep in mind that a proper suspension alignment is required immediately following the installation to ensure optimal handling geometry. The most important thing to watch out for is maintaining proper torque sequences on all mounting hardware to prevent stress concentrations on the 100 percent carbon fiber prepreg laminate monoblock tubular construction.

AI-generated overview — always verify against the official install instructions.

SpeedSpec may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. SpeedSpec is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.