Article 4.2
Floor Body Extrusion
Technical Regulations
Article 4.2
Floor Body Extrusion
Chapter: APPENDIX C2: REGULATION VOLUMES
In Simple Terms
The floor of the car (the flat bottom surface) must extend upward to a specific height of 275mm. Think of it like taking a 2D shape and stretching it vertically to create a 3D wall - this defines how tall the floor structure can be.
- The floor surface defined in the previous regulation must be extended vertically (along the Z-axis)
- The maximum height of this extrusion is set at 275mm from the reference plane
- This measurement is crucial for determining the overall floor dimensions and aerodynamic compliance
- Any deviation from this specification could violate technical regulations
Official FIA Text
Once the surface in §4.1 is fully defined, it must be extruded along Z to Z = 275.
floor extrusionz-axis275mmcar floortechnical regulation
2026 Season Regulations