Article C9.4
Homologated Gearbox and Component Classification
Technical Regulations
Article C9.4
Homologated Gearbox and Component Classification
Chapter: C9
In Simple Terms
Teams must get their gearbox and related transmission parts approved by the FIA before the season starts. They can make one upgrade during the four-year cycle, and can request approval for changes if needed for reliability, cost savings, or if materials become unavailable.
- All driveline and gear-change components must be homologated (officially approved) before the season begins
- Teams are limited to a single upgrade of these components during a four-year period
- The FIA can approve modifications for reliability issues, cost reduction, or when materials are no longer available
Official FIA Text
Design of Driveline Components, Gear-Change Components and Auxiliary Components must be homologated before season start. Single upgrade permitted during four-year period. Modifications allowed for reliability, cost saving, or unavailable materials with FIA approval.
homologationgearboxdrivelinegear-changetransmission
2026 Season Regulations