The 860 series used the engine .
The 860 series stressed member frame of Fabio Taglioni 's original 750 GT L twin , with bevel cam drive and with the enlarged capacity achieved by using two of the Ducati 450 single - cylinder engine 's sleeves and pistons .
The 860 series used the engine and stressed member frame of Fabio Taglioni 's original 750 GT L twin , with bevel cam drive and with the enlarged capacity achieved by using two of the Ducati 450 single - cylinder engine 's sleeves and pistons .