Article C5.18.3

Mechanical Power Connection

Technical Regulations

Article C5.18.3

FIA Source

Mechanical Power Connection

Chapter: C5

In Simple Terms

The MGU-K (a hybrid power recovery system) must connect to the engine through a single shaft, and this connection point must be located before a specific measurement position (X PU = 100) on the engine. This rule ensures the hybrid system is properly integrated into the power unit in a standardized way.

  • Only one shaft can transfer all mechanical power between the MGU-K and the internal combustion engine
  • The MGU-K connection to the crankshaft must be positioned ahead of the X PU = 100 measurement point
  • This standardized connection point prevents teams from gaining unfair advantages through alternative mechanical configurations
Official FIA Text

All mechanical power to and from the MGU-K must pass through a single shaft to the MGU-K transmission. The connection to the ICE crankshaft must be ahead of X PU =100.

mgu-kmechanical power connectionhybrid systemcrankshaftpower unit
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