Aprilia RS 660 2021 vs. BMW S 1000 RR 2023

The Aprilia RS 660 2021 and the BMW S 1000 RR 2023 are both high-performance sport bikes, but they have some key differences in terms of their technical specifications and strengths.

Starting with the engine and drive train, the Aprilia RS 660 2021 features 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 2023 has a larger in-line engine with a displacement of 999cc. It delivers a much higher power output of 210 horsepower and 113 Nm of torque, with a compression ratio of 13.3. This makes the BMW significantly more powerful than the Aprilia.

In terms of suspension, both bikes feature upside-down telescopic forks at the front and a swing arm with a monoshock at the rear. The Aprilia RS 660 2021 has a front fork diameter of 41mm, while the BMW S 1000 RR 2023 has a larger diameter of 45mm. Both bikes offer adjustable compression, preload, and rebound settings for the suspension. The rear suspension of both bikes is made of aluminum.

When it comes to the chassis, both bikes have aluminum frames. However, the Aprilia RS 660 2021 has a load-bearing engine frame, while the BMW S 1000 RR 2023 has a twin-tube frame that also serves as a load-bearing engine. The BMW has a slightly steeper rake angle of 66.4 degrees compared to the Aprilia's 65.9 degrees. The trail measurement for the BMW is 99.8mm, while the Aprilia has a trail of 104.6mm.

Aprilia RS 660 2021

In terms of braking, both bikes feature double disk brakes at the front with a diameter of 320mm. They also both utilize radial brake technology.

Both the Aprilia RS 660 2021 and the BMW S 1000 RR 2023 come equipped with advanced rider assistance systems such as ABS, riding modes, launch control, ride by wire, quickshifter, and traction control. However, the BMW lacks the anti-wheelie feature that is present in the Aprilia.

In terms of dimensions and weights, the Aprilia has a front tire width of 120mm and a rear tire width of 180mm, while the BMW has a wider rear tire width of 190mm. Both bikes have 17-inch wheels. The wheelbase of the Aprilia is 1370mm, while the BMW has a longer wheelbase of 1457mm. The seat height of the Aprilia is 820mm, while the BMW has a slightly higher seat height of 824mm. The dry weight of the Aprilia with ABS is 169kg, while the BMW weighs slightly more at 175kg. The kerb weight of the Aprilia is 183kg, while the BMW weighs 197kg. Both bikes have fuel tank capacities of around 15-16.5 liters.

BMW S 1000 RR 2023

In terms of equipment, both bikes come with LED headlights. However, the BMW S 1000 RR 2023 also features a TFT display, which is not present in the Aprilia RS 660 2021.

In terms of strengths, the Aprilia RS 660 2021 offers a powerful engine, an extensive electronics package, a sporty chassis, a nice sound, low weight, and a sporty look. On the other hand, the BMW S 1000 RR 2023 is praised for its very good electronics or control systems, good feedback, and good stability.

As for weaknesses, the Aprilia RS 660 2021 is criticized for having a poorly readable rev counter, while the BMW S 1000 RR 2023 is known to have engine vibrations.

In conclusion, while both the Aprilia RS 660 2021 and the BMW S 1000 RR 2023 are high-performance sport bikes, the BMW offers a more powerful engine and some additional features like a TFT display. However, the Aprilia has its strengths in terms of its extensive electronics package, low weight, and sporty look. Ultimately, the choice between these two bikes will depend on the rider's preferences and priorities.