Kawasaki Ninja 1000SX 2021 vs. Kawasaki Z900 RS 2018

The Kawasaki Ninja 1000SX 2021 and the Kawasaki Z900 RS 2018 are both impressive motorcycles, but they have some notable differences.

Starting with the technical specifications, the Ninja 1000SX 2021 boasts a more powerful engine with 142 HP compared to the Z900 RS 2018's 111 HP. The Ninja 1000SX also has higher torque at 111 Nm, while the Z900 RS has 98.6 Nm. Both bikes feature a 4-stroke, liquid-cooled engine and a chain transmission. However, the Ninja 1000SX has a larger displacement at 1043 ccm compared to the Z900 RS's 948 ccm.

In terms of suspension, both bikes have upside-down telescopic forks at the front and a swing arm suspension at the rear. The Ninja 1000SX offers more travel in both the front and rear suspension, with 120 mm and 144 mm respectively. The Z900 RS has 120 mm of travel in the front and 140 mm in the rear. Both bikes have adjustable suspension, with the Ninja 1000SX offering compression, preload, and rebound adjustments for both front and rear, while the Z900 RS only has preload and rebound adjustments for the rear.

Kawasaki Ninja 1000SX 2021

When it comes to the chassis, the Ninja 1000SX features an aluminum frame, providing a lightweight and rigid structure. On the other hand, the Z900 RS has a steel frame, which may make it slightly heavier.

In terms of braking, both bikes have double disk brakes at the front with a diameter of 300 mm and four pistons. The Ninja 1000SX has an advantage in terms of assistance systems, offering advanced rider assistance systems such as ABS, riding modes, cornering ABS, ride by wire, quickshifter, and traction control. The Z900 RS, on the other hand, only has ABS, ride by wire, and traction control.

In terms of dimensions and weights, the Ninja 1000SX has a slightly smaller wheelbase at 1440 mm compared to the Z900 RS's 1470 mm. Both bikes have a similar seat height, with the Ninja 1000SX at 834.98 mm and the Z900 RS at 835 mm. The Ninja 1000SX is slightly heavier with a kerb weight of 235 kg compared to the Z900 RS's 215 kg. The Ninja 1000SX also has a larger fuel tank capacity at 19 liters, while the Z900 RS has a capacity of 17 liters.

Kawasaki Z900 RS 2018

Now let's discuss the strengths and weaknesses of each bike. The Ninja 1000SX 2021 is praised for its silky four-cylinder engine, comfortable yet sporty ergonomics, wind protection, standard electronics package, stability thanks to the full fairing, and accessibility. However, some weaknesses include the engine needing revs, electronics that could be more user-friendly, and a windshield that can only be adjusted with two hands.

On the other hand, the Z900 RS 2018 is commended for its powerful and smooth engine, good looks, comfortable seating position, easy rideability, and balanced handling. It is described as neither nervous nor ponderous. However, some weaknesses of the Z900 RS include the lack of a shift assistant, being heavier than other retro bikes in its class, a seat that may be too soft for long tours, and the absence of wind protection.

In conclusion, the Kawasaki Ninja 1000SX 2021 and the Kawasaki Z900 RS 2018 are both impressive motorcycles with their own strengths and weaknesses. The Ninja 1000SX offers more power, advanced rider assistance systems, and a larger fuel tank capacity. On the other hand, the Z900 RS has a powerful engine, good looks, and a comfortable seating position. Ultimately, the choice between these two bikes will depend on the rider's preferences and priorities.