Aprilia RS 660 (2025) £9,495 Oxfordshire, South East Make: Aprilia Model: RS 660 Engine: 660cc Style: Sports Mileage: 2,074 miles Condition: Used Colour: White Seller: Premier Bikes Aprilia RS 660 (2025), 660cc, 2074 miles. We now have this Stunning One Owner 2025/25 Aprilia RS660 Extrema. The difference between the Aprilia RS 660 and the Aprilia RS 660 Extrema lies in a simple logic: take an already refined base and push it a notch further, without tipping into homologated race bike territory. The checkered pattern visually signifies belonging to a special edition, but it’s beneath the bodywork that the essentials are played out. The front mudguard and engine guard switch to carbon fiber. The passenger seat cap... View bike details...