Karbonius Composites notes that while the F8x M3 / M4 shipped with a striking, highly rigid carbon strut brace tying the towers to the core support, the G8X platform received a cost- and space-constrained stamped-steel 2-piece brace. To address this, Karbonius engineered a full replacement: an autoclave-cured, 100% pre-preg carbon tubular V-brace that minimizes joints and potential weak points for true structural integrity. Unlike multi-piece, jointed alternatives or assemblies using off-the-shelf carbon tubes, Karbonius one-piece V-brace is purpose-built for the G8X, increasing rigidity while removing more than 5.5lb compared to the factory unit. A CNC-machined 6061 aluminum mount is integrated into the bar for added strength and is offered anodized in natural silver or black. Installation is fast and straightforward using factory hardware, and the elevated aesthetic arguably rivals the iconic F8X carbon brace.
Karbonius Composites prioritizes uncompromising quality. Every component is produced in Spain from 100% pre-preg carbon fiber and autoclave-cured, using meticulous hand layup by highly qualified technicians under rigorous quality controls. Confident in its manufacturing standards, Karbonius provides a 2-year warranty against manufacturing defects. With extensive composites experience and a global base of satisfied customers, the brand is committed to delivering exceptional products and customer satisfaction. Each piece is individually numbered to verify origin and authenticity.
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