Kawasaki Z900 2021 vs. Suzuki GSX-S1000 2015

The Kawasaki Z900 2021 and the Suzuki GSX-S1000 2015 are both naked bikes with similar engine types, inline four-cylinder engines. However, there are several differences between the two models.

In terms of engine power, the Suzuki GSX-S1000 2015 has a higher output with 149 HP compared to the Kawasaki Z900 2021's 125.4 HP. The Suzuki also has a higher torque rating of 106 Nm compared to the Kawasaki's 98.6 Nm. This means that the Suzuki may offer more aggressive acceleration and better performance in the higher rev range.

Both bikes have fuel injection systems and liquid cooling, ensuring efficient and reliable engine performance. The Kawasaki Z900 2021 has a slightly smaller displacement of 948 ccm compared to the Suzuki GSX-S1000 2015's 999 ccm.

Kawasaki Z900 2021

In terms of suspension, both bikes feature upside-down telescopic forks in the front and swing arm suspension with a monoshock in the rear. However, the Suzuki GSX-S1000 2015 offers more adjustability with compression, preload, and rebound adjustments in the front suspension, while the Kawasaki Z900 2021 only has preload and rebound adjustments.

The chassis of the Kawasaki Z900 2021 is made of steel and has a double cradle frame type, while the Suzuki GSX-S1000 2015 features an aluminum frame with a twin tube design. The choice of materials and frame design may affect the overall weight and handling characteristics of the bikes.

In terms of braking, both bikes have double disk brakes in the front with four-piston calipers. However, the Suzuki GSX-S1000 2015 has larger diameter disks at 310 mm compared to the Kawasaki Z900 2021's 300 mm. The Suzuki also features radial brake technology, which may provide better braking performance and feel.

In terms of advanced rider assistance systems, the Kawasaki Z900 2021 offers more features with ABS, riding modes, ride by wire, and traction control. The Suzuki GSX-S1000 2015 only has ABS.

Suzuki GSX-S1000 2015

Both bikes have similar tire sizes with a 120 mm width in the front and a 17-inch diameter. However, the Suzuki GSX-S1000 2015 has a wider rear tire at 190 mm compared to the Kawasaki Z900 2021's 180 mm. The Suzuki also has a slightly higher seat height at 815 mm compared to the Kawasaki's 795 mm. The wheelbase of the Suzuki is slightly longer at 1460 mm compared to the Kawasaki's 1450 mm.

In terms of weight, the Suzuki GSX-S1000 2015 has a slightly lower curb weight with ABS at 209 kg compared to the Kawasaki Z900 2021's 210 kg.

Overall, the Kawasaki Z900 2021 offers a powerful four-cylinder engine, intuitive handling, good equipment, and aggressive looks, all at a good value for money. However, it lacks a quickshifter option and some of its competitors have more advanced electronic systems. On the other hand, the Suzuki GSX-S1000 2015 is known for its legendary Suzuki engine, sharp sound, rev-happy nature, pleasing design, strong brakes, and taut chassis. However, it may have weaker performance in the rev range and may experience load change.