Kawasaki Z 400 2023 vs. Aprilia Tuono 660 2021

The Kawasaki Z 400 2023 and the Aprilia Tuono 660 2021 are both naked bikes with similar engine configurations, but they have some notable differences in terms of power, technology, and overall performance.

Starting with the engine, the Kawasaki Z 400 2023 features an inline twin-cylinder engine with a displacement of 399cc. It produces 45 horsepower and 37 Nm of torque. On the other hand, the Aprilia Tuono 660 2021 has a slightly larger inline twin-cylinder engine with a displacement of 659cc. It delivers a more powerful performance with 95 horsepower and 67 Nm of torque. The Aprilia Tuono 660 2021 clearly has the advantage in terms of power output.

In terms of suspension, both bikes feature a swing arm and a monoshock rear suspension. However, the Kawasaki Z 400 2023 has a telescopic fork front suspension, while the Aprilia Tuono 660 2021 is equipped with an upside-down telescopic fork front suspension. The upside-down fork on the Aprilia Tuono 660 2021 is generally considered to provide better performance and stability during aggressive riding.

Kawasaki Z 400 2023

The chassis of the Kawasaki Z 400 2023 is made of steel, while the Aprilia Tuono 660 2021 features an aluminum frame. The aluminum frame on the Aprilia Tuono 660 2021 is lighter and offers better rigidity, contributing to improved handling and maneuverability.

When it comes to braking, the Kawasaki Z 400 2023 has a single disc front brake with a diameter of 310mm and a double-piston caliper. On the other hand, the Aprilia Tuono 660 2021 is equipped with double disc front brakes with a larger diameter of 320mm and four-piston radial calipers. The larger diameter and radial calipers on the Aprilia Tuono 660 2021 provide better stopping power and more precise braking performance.

In terms of advanced rider assistance systems, both bikes come with ABS. However, the Aprilia Tuono 660 2021 offers a more extensive range of electronic aids, including riding modes, launch control, ride-by-wire, quickshifter, traction control, and anti-wheelie. These features provide enhanced safety and performance, although some of them may come at an additional cost.

In terms of dimensions and weights, both bikes have similar wheelbase measurements of 1370mm. However, the Aprilia Tuono 660 2021 has a higher seat height at 820mm compared to the Kawasaki Z 400 2023's 785mm. The Aprilia Tuono 660 2021 also has a slightly larger fuel tank capacity of 15 liters compared to the Kawasaki Z 400 2023's 14 liters.

Aprilia Tuono 660 2021

In terms of strengths, the Kawasaki Z 400 2023 is praised for its lively engine, good chassis and brakes, easy handling, grown-up look, and high-quality workmanship. On the other hand, the Aprilia Tuono 660 2021 is commended for its easy-to-operate engine with a good sound, sporty handling, good ergonomics, decent brakes, and extensive electronics (although some may come at an extra cost).

As for weaknesses, the Kawasaki Z 400 2023 is criticized for its non-adjustable levers, while the Aprilia Tuono 660 2021 is noted for its higher price-to-performance ratio and the additional cost of the IMU package.

In conclusion, the Aprilia Tuono 660 2021 offers a more powerful engine, advanced electronics, and better braking performance compared to the Kawasaki Z 400 2023. However, the Kawasaki Z 400 2023 has its own strengths in terms of handling, build quality, and a more affordable price point. Ultimately, the choice between these two bikes will depend on the rider's preferences and priorities.