Aprilia RS 660 2021 vs. Kawasaki Ninja ZX-6R 636 2013

The Aprilia RS 660 2021 and the Kawasaki Ninja ZX-6R 636 2013 are both supersport motorcycles, designed for high-performance riding. However, there are several differences between the two models.

Starting with the engine and drivetrain, the Aprilia RS 660 2021 features an inline crankshaft configuration, while the Kawasaki Ninja ZX-6R 636 2013 has an inline engine. The Aprilia has a larger bore of 81mm compared to the Kawasaki's 67mm, resulting in a displacement of 659cc for the Aprilia and 636cc for the Kawasaki. In terms of power, the Kawasaki outperforms the Aprilia with 131 HP compared to the Aprilia's 100 HP. However, the Aprilia has a higher torque rating of 67 Nm compared to the Kawasaki's 71 Nm. The Aprilia also has a higher compression ratio of 13.5, indicating better efficiency.

Moving on to the suspension, both motorcycles feature upside-down telescopic forks at the front. Both also offer adjustments for compression, preload, and rebound. The rear suspension on both models also offers similar adjustments.

Aprilia RS 660 2021

In terms of chassis, both motorcycles feature aluminum frames. However, the Aprilia RS 660 2021 has a motor-supporting frame type, while the Kawasaki Ninja ZX-6R 636 2013 has a double tube, perimeter, extruded frame type.

When it comes to braking, both motorcycles have dual disc brakes at the front. The Aprilia RS 660 2021 features Brembo brakes, while the Kawasaki Ninja ZX-6R 636 2013 features Nissin brakes. The Kawasaki also has radial, monoblock, petal technology for its front brakes.

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, quick shifter, traction control, and anti-wheelie. The Kawasaki Ninja ZX-6R 636 2013 only offers traction control.

Kawasaki Ninja ZX-6R 636 2013

In terms of dimensions and weights, both motorcycles have a front tire width of 120mm and a rear tire width of 180mm. They both have a 17-inch front and rear wheel diameter. The Aprilia has a slightly shorter wheelbase of 1370mm compared to the Kawasaki's 1395mm. The seat height is also slightly lower on the Aprilia at 820mm compared to the Kawasaki's 830mm. The Aprilia RS 660 2021 is lighter with a curb weight of 183kg compared to the Kawasaki Ninja ZX-6R 636 2013's 194kg. The Kawasaki also has a larger fuel tank capacity of 17 liters compared to the Aprilia's 15 liters.

In terms of strengths, the Aprilia RS 660 2021 offers a powerful engine, a comprehensive electronic package, a sporty chassis, a pleasant sound, a reduced weight, and a sporty appearance. On the other hand, the Kawasaki Ninja ZX-6R 636 2013 boasts an improved geometry, a good seating position, good handling, and uncompromising reliability.

However, the Aprilia RS 660 2021 has a weakness in its less legible tachometer, while the Kawasaki Ninja ZX-6R 636 2013 has a high purchase price as a drawback.