Article C5.4.5

Crankshaft centre line and output shaft

Technical Regulations

Article C5.4.5

FIA Source

Crankshaft centre line and output shaft

Chapter: C5

In Simple Terms

The crankshaft (the main rotating shaft in the engine) must be positioned at a very specific location in the car and aligned perfectly straight along the car's length. The engine can only send power to the gearbox through one single shaft, preventing any clever tricks with multiple power outputs.

  • Crankshaft must be positioned at exact coordinates Y=0 and Z=90 (with only 0.5mm tolerance) to ensure standardization across all teams
  • The crankshaft must run parallel to the car's length (X axis) for proper alignment
  • Only one output shaft allowed to transmit power to the gearbox, eliminating any dual-output systems
Official FIA Text

The crankshaft centre line must lie at Y=0 and Z=90 (±0.5mm) and be parallel to the X axis. The Power Unit may only transmit torque to the Gearbox by means of a single output shaft.

crankshaftengine positioningoutput shaftpower transmissiongearbox
2026 Season Regulations