BMW S 1000 R 2014 vs. Kawasaki Z900 2021

The BMW S 1000 R 2014 and the Kawasaki Z900 2021 are both naked bikes with inline-four engines and similar displacement. However, there are several differences between the two models.

In terms of power, the BMW S 1000 R 2014 has a higher horsepower of 160 HP compared to the Kawasaki Z900 2021 with 125.4 HP. This gives the BMW an advantage in terms of acceleration and top speed.

Both bikes have four cylinders and similar torque, with the BMW producing 112 Nm and the Kawasaki producing 98.6 Nm. While the BMW has slightly higher torque, the difference may not be significant in real-world riding scenarios.

When it comes to suspension, both bikes feature upside-down telescopic forks at the front and a swingarm with a monoshock at the rear. This setup provides good handling and stability for both models.

BMW S 1000 R 2014

In terms of chassis, the BMW S 1000 R 2014 features an aluminum frame, which is known for its lightweight and rigidity. On the other hand, the Kawasaki Z900 2021 has a steel frame, which may be slightly heavier but still provides good stability.

Both bikes have dual disc brakes at the front with four-piston calipers, providing strong and reliable stopping power. However, the BMW uses radial technology for its front brakes, which offers better performance and control compared to the Kawasaki's petal technology.

In terms of advanced rider aids, the BMW S 1000 R 2014 offers dynamic suspension, which adjusts the suspension settings based on road conditions and riding style. The Kawasaki Z900 2021, on the other hand, comes with ABS, riding modes, ride-by-wire throttle, and traction control. While the BMW's dynamic suspension is a unique feature, the Kawasaki offers a more comprehensive package of electronic aids.

In terms of dimensions, the BMW S 1000 R 2014 has a narrower front tire width of 120 mm compared to the Kawasaki Z900 2021 with 180 mm. The BMW also has a slightly shorter wheelbase of 1439 mm compared to the Kawasaki's 1450 mm. However, the seat height of the BMW is higher at 814 mm compared to the Kawasaki's 795 mm.

Kawasaki Z900 2021

In terms of weight, the BMW S 1000 R 2014 has a curb weight of 207 kg with ABS, while the Kawasaki Z900 2021 weighs slightly more at 210 kg with ABS. The weight difference between the two models is minimal and may not significantly affect their performance.

In terms of strengths, the BMW S 1000 R 2014 offers a sporty chassis, extreme power and performance, excellent electronic aids, and a good price-to-performance ratio. It is quick and comfortable on both the racetrack and rural roads. On the other hand, the Kawasaki Z900 2021 boasts a powerful four-cylinder engine, intuitive handling, good equipment, an aggressive appearance, and a good value for money.

In terms of weaknesses, the BMW S 1000 R 2014 has a slightly rough engine operation, the DDC suspension can be on the firm side, the seat height is relatively high, and the design is subjective. The Kawasaki Z900 2021 lacks a quick-shifter option and may face competition from models with electronically adjustable front suspension using a 6-axis IMU.

Overall, both the BMW S 1000 R 2014 and the Kawasaki Z900 2021 are capable naked bikes with their own strengths and weaknesses. The choice between the two would depend on individual preferences, riding style, and priorities.