Internal combustion
Car 80 · Honda 500 cc
- Four-stroke piston engine.Rule IC.1.1.1
- Maximum displacement of 710 cc.Rule IC.1.1.1
- All intake air passes through a circular restrictor: 20 mm on gasoline, 19 mm on E85.Rules IC.2.4.1 · IC.2.4.3
- Hybrid powertrains are not allowed.Rule IC.1.1.2


