A nimble and sporty naked bike, the 2021 Aprilia Tuono 660 delivers a thrilling blend of performance, style, and electronics in a lightweight package. Under the tank sits a high-revving 659 cc parallel-twin engine with ride-by-wire throttle, mated to a 6-speed gearbox and slipper clutch. Its advanced APRC electronics suite (including traction control, wheelie control, engine braking, and adjustable mappings) gives you confidence across both street and track. The chassis features an aluminum twin-beam frame, adjustable 41 mm USD front fork, and a sporty rear monoshock — all helping to keep the handling sharp yet accessible.