Article C3.16.13
EC Rocket Aperture
Technical Regulations
Article C3.16.13
EC Rocket Aperture
Chapter: C3
In Simple Terms
F1 teams can have small exhaust outlets (called 'rocket apertures') on the engine cover to help with aerodynamics. These holes must be no bigger than 100,000mm² total and positioned toward the rear of the car, with a maximum of two holes allowed on each side.
- Maximum total area of 100,000mm² for all exhaust apertures combined
- Apertures must be located rearward of position XR = −55 on the engine cover
- Teams can have up to two separate apertures per side (up to four total)
- These are exhaust-only outlets with specific dimensional constraints [10, 300, 350]
Official FIA Text
EC Rocket aperture within [10, 300, 350] RV on Engine Cover, maximum 100000mm² area, efflux only, must lie rearward of XR = −55, may consist of up to two apertures per side.
rocket apertureengine coverexhaust outletaerodynamicefflux
2026 Season Regulations