Aprilia RS 660 2021 vs. Kawasaki Ninja 650 2017

The Aprilia RS 660 2021 and the Kawasaki Ninja 650 2017 are both supersport motorcycles that offer exciting performance and sporty aesthetics. However, there are several key differences between the two models.

In terms of engine specifications, the Aprilia RS 660 2021 features an in-line crankpin offset engine with a bore of 81 mm and a stroke of 63.93 mm. It delivers an impressive engine power of 100 HP and a torque of 67 Nm. With a compression ratio of 13.5 and 2 cylinders with 4 valves per cylinder, the RS 660 offers a powerful and responsive riding experience. On the other hand, the Kawasaki Ninja 650 2017 is equipped with an in-line engine with a larger bore of 83 mm and a shorter stroke of 60 mm. It has a lower engine power of 68.2 HP and a torque of 65.7 Nm. The compression ratio is 10.8 and it also has 2 cylinders with 4 valves per cylinder. While the Ninja 650 may not match the power output of the RS 660, it still offers a resilient and enjoyable engine performance.

In terms of suspension, both motorcycles feature a swing arm rear suspension with a monoshock absorber. However, the Aprilia RS 660 2021 is equipped with an upside-down telescopic fork front suspension with a diameter of 41 mm, while the Kawasaki Ninja 650 2017 has a regular telescopic fork front suspension with the same diameter. This difference in suspension design may result in variations in handling and ride quality.

Aprilia RS 660 2021

When it comes to the chassis, the Aprilia RS 660 2021 features an aluminum frame that is load-bearing, while the Kawasaki Ninja 650 2017 has a steel frame that is tubular in design. The choice of materials and frame type can affect the overall weight and rigidity of the motorcycle, potentially influencing its handling characteristics.

In terms of braking technology, both motorcycles have double disk front brakes. However, the Aprilia RS 660 2021 utilizes radial technology, while the Kawasaki Ninja 650 2017 uses petal technology. Radial brakes are known for their enhanced braking performance and improved heat dissipation, providing more precise and powerful braking capabilities.

In terms of advanced rider assistance systems, the Aprilia RS 660 2021 offers a comprehensive package including ABS, riding modes, launch control, ride by wire, quickshifter, traction control, and anti-wheelie systems. On the other hand, the Kawasaki Ninja 650 2017 only offers ABS as an advanced rider assistance system.

In terms of dimensions and weights, both motorcycles have similar front and rear tire widths and diameters. The Aprilia RS 660 2021 has a slightly shorter wheelbase of 1370 mm compared to the Kawasaki Ninja 650 2017's 1410 mm. The seat height of the RS 660 is also slightly higher at 820 mm compared to the Ninja 650's 790 mm. The RS 660 is lighter with a kerb weight of 183 kg, while the Ninja 650 weighs slightly more at 193 kg. Both motorcycles have a fuel tank capacity of 15 liters.

Kawasaki Ninja 650 2017

In terms of strengths, the Aprilia RS 660 2021 boasts a powerful engine, extensive electronics package, sporty chassis, nice sound, low weight, and a sporty look. On the other hand, the Kawasaki Ninja 650 2017 is praised for its transparent chassis for sport, playful and good-natured handling, excellent brakes, sharp looks reminiscent of the ZX-10R, and a resilient engine.

However, the Aprilia RS 660 2021 has a weakness in terms of a poorly readable rev counter, while the Kawasaki Ninja 650 2017 lacks a distinctive sound from the stock exhaust and may exhibit slight vibrations from the engine.

In conclusion, the Aprilia RS 660 2021 and the Kawasaki Ninja 650 2017 are both impressive supersport motorcycles with their own unique features and strengths. The RS 660 offers a more powerful engine and a comprehensive electronics package, while the Ninja 650 provides a playful and enjoyable riding experience with its resilient engine and excellent brakes. Ultimately, the choice between the two models will depend on individual preferences and priorities.