The 390 Duke features an all-new heart with a Nikasil-coated cylinder with forged pistons and a new head crank-case, among some other new organs. This gives the single-cylinder, 373.2cc, liquid-cooled engine a healthy output of 43bhp @9500rpm and 35Nm @7500rpm, which further results in an impressive power-to-weight ratio of 296bhp per tonne. A real quick one, this.a
