Ducati 500 parallel-desmo-twin head
From the 500 cc Sport Desmo only 1.950 were build.
From the 350 Sport Desmo only 1.200.
This 500 cc head is completely empty.
This kind of desmo
(characteristics: Chain driven camschafts,
valve angle 60 degrees, shorter cam followers
and very small cam-diameter)
was in production from 1976-1979.
(Classification = Group 6A)