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
