RITORNO ENGINE

A 905cc (88 x 74.4mm) 90˚ aircooled V-twin with bevel-drive single overhead cams, desmodromic valves, strengthened cases, plain big-end bearings, one-piece crank, forged pistons, Nikasil bores, dry clutch and 40mm Dell’orto carbs; 89bhp at 8500rpm.