Replica of 500cc König square block motorbike engine.

Exhaust down and inlet ports on up positions.

Heads has inserted chambers and threads can be straight or oblique positions.

Heads and chambers are sealed with rubber o-rings only.

Optional rotary valve can be used with Weber or Solex type carburettors.

Water pump and water sump can be added on request. Water outlets pipe threads 1/2".

Bore: 54mm

Stroke: 54mm

Volume: 495ccm