Aprilia RS 660 2021 vs. BMW S 1000 RR 2017

The Aprilia RS 660 2021 and the BMW S 1000 RR 2017 are both high-performance supersport motorcycles, but they have some key differences in terms of their technical specifications and strengths.

Starting with the engine and drivetrain, the Aprilia RS 660 2021 is equipped with an in-line crankpin offset engine with a displacement of 659cc. It produces 100 horsepower and 67 Nm of torque, with a compression ratio of 13.5. On the other hand, the BMW S 1000 RR 2017 features an in-line engine with a displacement of 999cc, delivering a much higher power output of 199 horsepower and 113 Nm of torque, with a compression ratio of 13.

In terms of suspension, both motorcycles have upside-down telescopic forks at the front and swing arm suspensions at the rear. This provides good stability and control during high-speed riding and cornering.

Aprilia RS 660 2021

In terms of chassis, both motorcycles feature aluminum frames, which offer a good balance between rigidity and weight. However, the Aprilia RS 660 2021 has a load-bearing engine frame, while the BMW S 1000 RR 2017 has a twin-tube frame.

When it comes to braking, both motorcycles are equipped with double disk brakes at the front, utilizing radial technology. This ensures strong and reliable stopping power.

In terms of dimensions and weights, the Aprilia RS 660 2021 has a front tire width of 120mm and a rear tire width of 180mm, with both tires having a diameter of 17 inches. It has a wheelbase of 1370mm and a seat height of 820mm. The kerb weight, including ABS, is 183kg, and it has a fuel tank capacity of 15 liters. On the other hand, the BMW S 1000 RR 2017 has a front tire width of 120mm and a rear tire width of 190mm, with both tires also having a diameter of 17 inches. It has a slightly longer wheelbase of 1438mm and a slightly lower seat height of 815mm. The kerb weight, including ABS, is higher at 208kg, and it has a larger fuel tank capacity of 17.5 liters.

BMW S 1000 RR 2017

In terms of strengths, the Aprilia RS 660 2021 is praised for its powerful engine, extensive electronics package, sporty chassis, nice sound, low weight, and sporty look. On the other hand, the BMW S 1000 RR 2017 is commended for its complete electronic equipment, strong and easy-to-control engine, comfortable seating position even for taller riders, and good chassis performance on the road and at track days.

However, the Aprilia RS 660 2021 does have a weakness in terms of a poorly readable rev counter, while the BMW S 1000 RR 2017 has weaknesses such as brake fade on the racetrack under high load, ride quality that is sufficient for track days but not ideal for racing, and a somewhat greyed-out appearance despite being technically up to date.

In conclusion, the Aprilia RS 660 2021 and the BMW S 1000 RR 2017 are both impressive supersport motorcycles with their own unique strengths and weaknesses. The Aprilia RS 660 2021 offers a powerful engine and sporty design, while the BMW S 1000 RR 2017 provides a complete electronic package and a comfortable riding position. Ultimately, the choice between these two models will depend on the rider's preferences and priorities.