Exhaust valves head diameter

In Simple Terms

F1 engines must have exhaust valves with head diameters between 27.0mm and 29.0mm, and all exhaust valves on a car must be identical to each other. This regulation ensures fair competition by preventing teams from using different valve sizes to gain an advantage.

• Exhaust valve head diameter must be between 27.0mm and 29.0mm
• All exhaust valves on a single car must have identical design
• This standardization prevents performance advantages through valve variation