Article C17.4.4
TRC/FSC Identical Supply Requirement
Technical Regulations
Article C17.4.4
TRC/FSC Identical Supply Requirement
Chapter: C17
In Simple Terms
When a team supplies engines or gearboxes to customer teams, they must be the exact same parts they use themselves—no special versions made just for other teams. However, customer teams are allowed to make changes to smaller sub-components if they've done the research and development work.
- Supplied TRC/FSC components must be identical to what the supplying team uses in the current or previous season
- Teams cannot create custom-made engine or gearbox versions specifically for customer teams
- Customer teams may modify sub-components within those parts if they have completed required R&D
Official FIA Text
Components supplied as TRC or FSC must be identical to those used by Supplying Team in same or previous Championship. Bespoke TRC/FSC for specific Customer Team not permitted. Customer Team may modify sub-components with required R&D.
trcfscidentical supplycustomer teamengine supply
2026 Season Regulations