Kawasaki Z900 RS 2018 vs. Kawasaki Z900 2021

The Kawasaki Z900 RS model year 2018 and the Kawasaki Z900 model year 2021 both have similar technical specifications. They both have an inline four-cylinder engine with a displacement of 948cc and a liquid cooling system. The power output of the Z900 RS is 111 HP, while the Z900 has a slightly higher power output of 125.4 HP. Both models have a torque of 98.6 Nm and use fuel injection as their fuel system.

In terms of suspension, both models have a telescopic fork at the front and a swingarm with a monoshock at the rear. The suspension adjustments include preload and recovery. The material used for the rear suspension is aluminum. The chassis of both models is made of steel, but the Z900 has a double cradle frame, while the Z900 RS has a tubular frame.

Kawasaki Z900 RS 2018

Both models have dual disc brakes at the front with a diameter of 300mm and four-piston calipers. They also have ABS and traction control as advanced rider assistance systems. However, the Z900 2021 model has additional features such as riding modes and cable ride-by-wire.

In terms of dimensions and weights, the Z900 RS has a wider front tire of 120mm compared to the Z900's 120mm. Both models have a 17-inch front and rear tire diameter. The Z900 RS has a longer wheelbase of 1470mm compared to the Z900's 1450mm. The seat height of the Z900 RS is higher at 835mm, while the Z900 has a lower seat height of 795mm. The Z900 RS is slightly heavier with a curb weight of 215kg compared to the Z900's 210kg.

The strengths of the Z900 RS include its powerful and smooth engine, attractive appearance, comfortable seating position, easy handling, and balanced maneuverability. It is not twitchy or heavy. On the other hand, the Z900 2021 model has a powerful four-cylinder engine, intuitive handling, good equipment, aggressive appearance, and a good value for money.

Kawasaki Z900 2021

The weaknesses of the Z900 RS include the lack of a quick-shifter, being heavier than other retro bikes in its class, a seat that may be too soft for long rides, and the absence of wind protection. The Z900 2021 model, on the other hand, lacks the option for quick-shifting and faces competition from bikes with a 6-axis IMU for electronic aids.

In conclusion, both the Kawasaki Z900 RS 2018 and the Kawasaki Z900 2021 have their strengths and weaknesses. The Z900 RS offers a comfortable retro-style ride with a powerful engine, while the Z900 provides a more aggressive and modern riding experience with additional features.