Long known in North America as a manufacturer building interesting bikes with small but ardent followers, for 2021 Aprilia is aiming right down the centre of main street in 2021. Aprilia enters the middleweight sport segment with the 2021 RS660 powered by a robust 100-horsepower parallel twin. The engine was developed utilizing one bank of the company’s 1100cc V4 motor including the cylinder heads, cylinders and pistons and the same 81mm bore and 63.9mm stroke. Aprilia says the new platform is designed to be light (182 kg), slender and comfortable for both pilot and passenger. In terms of rider safety, the 660 is claimed to have the most comprehensive electronic system available in the class, including traction, wheelie, and cruise controls, quick shift, engine braking control, engine mapping, cornering ABS, and five riding modes. Notable for the class, Aprilia is offering a long list of accessories including (at both ends of the spectrum) race-only exhaust and a saddlebag.