Kawasaki Z650 vs Kawasaki Ninja 650
The Kawasaki Z650 is lighter than the Kawasaki Ninja 650, while they are very close in specifications. The Kawasaki Z650 produces 67 hp (50 kW), and the matching output means neither has a power advantage on these figures. The meaningful distinction is the Kawasaki Z650’s lower mass; the Ninja remains the sport motorcycle in this pairing, while the Z650 is the naked motorcycle. The choice comes down to lower mass or the different motorcycle segment represented by each model.
Data for different model years: Kawasaki Z650 — 2026; Kawasaki Ninja 650 — 2011.
Kawasaki Z650 vs Kawasaki Ninja 650: specifications
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Engine capacity | 649 cm³ | 649 cm³ |
| Power | 67 hp (50 kW) | 67 hp (50 kW) |
| Wet weight | 186 kg — Favorable value | 204 kg |
| Seat height | 785 mm | 790 mm |
| Fuel capacity | 15.1 L | 15.5 L — Favorable value |
Percentages use the second model as the baseline. Highlighting applies only to comparable power, torque, mass and fuel capacity; it does not predict handling or acceleration.
Engine
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Engine capacity | 649 cm³ | 649 cm³ |
| Power | 67 hp (50 kW) | 67 hp (50 kW) |
| Engine type | Parallel Twin, four-stroke | Parallel Twin, four-stroke |
| Bore × stroke | 83.0 x 60.0 mm | 83.0 x 60.0 mm |
| Compression ratio | 10.8:1 | 11.3:1 |
| Cooling | Liquid | Liquid |
| Fuel system | Injection | Injection |
| Starting | Electric | Electric |
Transmission
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Gearbox | Manual 6-speed | Manual 6-speed |
| Clutch | Wet multi-disc, manual | Wet, Multi Disc |
| Final drive | Chain | Chain |
Dimensions and weight
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Wet weight | 186 kg — Favorable value | 204 kg |
| Seat height | 785 mm | 790 mm |
| Length | 2,065 mm | 2,101 mm |
| Width | 775 mm | 759 mm |
| Height | 1,080 mm | 1,199 mm |
| Wheelbase | 1,410 mm | 1,410 mm |
| Ground clearance | 130 mm | 145 mm |
| Fuel capacity | 15.1 L | 15.5 L — Favorable value |
Chassis
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Frame | Trellis, high-tensile steel | Semi-double cradle, high-tensile steel |
| Front suspension | 41 mm telescopic fork | 41mm hydraulic telescopic fork / 4.7 in. |
| Rear suspension | Horizontal Back-link with preload adjustment | Single offset laydown shock with adjustable spring preload / 4.9 in. |
| Front wheel travel | 124 mm | 119 mm |
| Rear wheel travel | 130 mm | 124 mm |
| Rake | 24.0° | 25.0° |
| Trail | 100 mm | 107 mm |
Brakes
| Specifications side by side | Kawasaki Z650Model year 2026 | Kawasaki Ninja 650Model year 2011 |
|---|---|---|
| Front brakes | Double disc. ABS. Petal-type rotors with two-piston calipers | Double disc |
| Rear brakes | Single disc. ABS | Single disc |
| Front brake diameter | 300 mm | 300 mm |
| Rear brake diameter | 220 mm | 220 mm |
| Front tire | 120/70-ZR17 | 120/70-17 |
| Rear tire | 160/60-ZR17 | 160/60-17 |
Key differences
This comparison uses Kawasaki Z650 from 2026 and Kawasaki Ninja 650 from 2011.
Power
Kawasaki Z650
67 hp (50 kW)
Kawasaki Ninja 650
67 hp (50 kW)
Wet weight
Kawasaki Z650
186 kg
Highlighted valueKawasaki Ninja 650
204 kg
Engine capacity
Kawasaki Z650
649 cm³
Kawasaki Ninja 650
649 cm³
Seat height
Kawasaki Z650
785 mm
Highlighted valueKawasaki Ninja 650
790 mm
Kawasaki Z650 vs Kawasaki Ninja 650: which one to choose?
These models are very close in specifications.
- The Kawasaki Z650 is 18 kg lighter, helping with pushing and parking.
- The Kawasaki Z650 has a lower seat than the Kawasaki Ninja 650, at 785 mm.
FAQ
- Which motorcycle has more power?
- Neither; both are rated at 67 hp (50 kW).
- Which motorcycle is lighter?
- The Kawasaki Z650 is lighter, at 186 kg compared with the Kawasaki Ninja 650 at 204 kg.
- Which motorcycle has the lower seat?
- The Kawasaki Z650 has the lower seat, at 785 mm compared with the Kawasaki Ninja 650 at 790 mm.