Karbonius E46 M3 Carbon Body Frame Side Panel Set

The Karbonius E46 M3 Carbon Body Frame Side Panel Set is one of the most extreme weight-reduction upgrades available for the E46 platform — a complete replacement for the factory steel quarter panels, manufactured entirely from carbon fiber prepreg in an autoclave. For track-focused builds where every kilogram matters, this set delivers an unmatched combination of mass reduction and structural integrity. Weighing just 5 kg for the complete set, the carbon panels save approximately 11 kg over the OEM steel equivalent (equivalent to OEM parts 41217896145 and 41217896146), resulting in a smooth, pore-free carbon surface that reflects the highest standards of Karbonius composite manufacturing. The panels are supplied in a primed, paint-ready exterior finish by default; contact us for alternative finish options. Manufactured by qualified staff under UNE-EN ISO 9001:2015 quality management standards at Karbonius' facility in Spain, each panel is individually numbered for authenticity and traceability. What's Included Left and right carbon fiber body frame side panels Numbered certificate of authenticity Product Details Equivalent to OEM parts 41217896145 and 41217896146 Weight: 5 kg (approx. 11 kg+ savings vs. OEM steel panels) 100% prepreg carbon fiber construction Cured in mold and autoclave for maximum strength Smooth, pore-free surface finish OEM dimensions for direct fitment Standard finish: primed, paint-ready exterior Individually numbered for authenticity 2-Year manufacturer warranty Important Notes Standard finish is primed, paint-ready — contact us for alternative finish options Notes Designed and manufactured in Spain by Karbonius Composites under UNE-EN ISO 9001:2015 standards Professional installation and paint work required Pricing is estimated and subject to change - Significantly Oversized Freight may apply