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The 2026 Aprilia RS 660 Blue Marlin stands out by delivering superbike-level performance in a lightweight middleweight sportbike package. Powered by a 659cc forward-facing parallel-twin engine producing approximately 105 horsepower, it offers crisp throttle response enhanced by 52 mm throttle bodies. A rigid twin-spar aluminum frame, 17-inch wheels, Brembo front brakes, and adjustable KYB or Öhlins suspension (model dependent) provide exceptional agility and confidence through corners. With advanced aerodynamics including winglets on select trims, a comprehensive electronics suite featuring ride modes, traction and wheelie control, cornering ABS, launch control, and a quickshifter, plus the striking Blue Marlin livery, the RS 660 delivers thrilling performance without the cost or extreme ergonomics of a full superbike.