Article C15.8.7

Additive Manufacturing in Exhaust

Technical Regulations

Article C15.8.7

FIA Source

Additive Manufacturing in Exhaust

Chapter: C15

In Simple Terms

F1 teams are allowed to use 3D printing (additive manufacturing) to make certain parts of their exhaust system, but only in three specific zones: where the exhaust starts (primary stub/flange), where pipes merge together (3-into-1 element), and where the exhaust connects to the turbo charger. Each zone has size limits to ensure fairness.

  • 3D printing is permitted in exactly three exhaust zones: primary stub/flange, 3-into-1 element, and secondary-to-turbocharger connection
  • Strict size restrictions apply: primary stub/flange limited to 150mm, 3-into-1 element to 230mm, and secondary-to-TC connection to 150mm per direction
  • These limitations prevent teams from gaining unfair advantages while allowing them to use modern manufacturing technology for optimization
Official FIA Text

Additive manufacture permitted in three areas: primary stub/flange (max 150mm), 3-into-1 element (max 230mm), and secondary-to-TC connection (max 150mm per direction.

additive manufacturing3d printingexhaust systemprimary stubflange
2026 Season Regulations