 It was followed by the "9½" road bike.There was criticism of the snatchy fuel injection mapping in these early models; however, power delivery was improved in time.They were both powered by an 1187 cc Bialbero CorsaCorta 87° V twin-cylinder engine that developed at 8500 rpm, and at 6,500 rpm, in the Corsaro, and at 8000 rpm in the 9½.