Article 4D
Front Axles (Inboard of the contact surface with the wheel spacer) and bearings
Technical Regulations
Article 4D
Front Axles (Inboard of the contact surface with the wheel spacer) and bearings
Chapter: C10.6
In Simple Terms
This rule covers the internal design of the front axle - specifically the parts you can't see from outside, including the axle shaft, bearings, and how they connect to the brake system. Teams must follow strict specifications for how these components are shaped and positioned to ensure fair competition and safety.
- Regulates the internal geometry of front axles hidden behind wheel spacers and bearings
- Controls the interface between the axle assembly and brake disc bell mounting
- Specifies bearing design, spacing, and positioning requirements
- Ensures standardized suspension geometry for competitive fairness
Official FIA Text
Axle geometry lying inboard of the contact surface with the wheel spacers and wheel bearing assembly. Axle geometry lying inboard of the contact surface with the wheel spacers, wheel bearings and spacers, interface and mounting to the brake disc bell.
front axlewheel bearingwheel spacerbrake discsuspension geometry
2026 Season Regulations