Kawasaki Z 650 50th Anniversary (2022) vs Derbi Senda R 125 4T (2008-) vs Derbi Senda Terra 125 Adventure (2008) vs Ghezzi Brian Ghezzi Brain Folgore (2004-)
Comparison technical specifications
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| Make: | Kawasaki | Derbi | Derbi | Ghezzi Brian |
| Model: | Z 650 50th Anniversary | Senda R 125 4T | Senda Terra 125 Adventure | Ghezzi Brain Folgore |
| Years: | 2022 | 2008- | 2008 | 2004- |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder. OHC | Four stroke, single cylinder. OHC | Four stroke, transverse 90° V-twin cylinder, light alloy push-rod, 2 valves per cylinder. |
| Capacity: | 649 cc / 39.65 cu-in | 124 cc / 7.6 cu-in | 124 cc / 7.6 cu-in | 1064 cc / 64.9 cu-in |
| Bore x Stroke: | 83 x 60 mm | 56 x 49 mm | 56 x 49 mm | 92 x 80 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 10.8:1 | 11.0:1 | 11.0:1 | 9.5:1 |
| Induction: | DFI® with Keihin 36mm Keihin throttle bodies | 22mm Keihin | 22mm Keihin | Weber Marelli electronic injection system |
| Ignition: | TCBI with electronic advance | Electronic | Electronic | Digital |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 50.2 kW / 67.3 hp | 9 kW / 12 hp @ 6500 rpm | 9 kW / 12 hp @ 6500 rpm | 76.5 kW / 104 hp @ 8250 rpm |
| Max Torque: | 65.7 Nm / 48.5 lb-ft @ 6500 rpm | 9 Nm / 6.6 lb-ft @ 6500 rpm | 9 Nm / 6.6 lb-ft @ 6500 rpm | 98 Nm / 72.2 lb-ft @ 6300 rpm |
| Transmission: | 6 Speed | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | Sealed chain | Chain | Chain | Shaft |
| Front Suspension: | 41 mm hydraulic telescopic fork | 41mm Paoli forks | 37mm Telescopic forks | 50 mm Marzocchi inverted telescopic forks |
| Rear Suspension: | Horizontal Back-link with adjustable preload swingarm | Paoli monoshock | Paoli monoshock | Box-section steel swingarm with Öhlins shock and rising-rate link |
| Front Brakes: | 2x 300mm petal-style discs, 2 piston calipers | Single 260mm disc | Single 280mm disc | 2x 420mm discs 4 piston calipers |
| Rear Brakes: | Single 220mm petal-style disc | Single 220mm disc | Single 220mm disc | Single 220mm disc 4 piston calipers |
| Front Tyre: | 120/70 ZR17 | 80/90 -21 | 100/90- 18 | 120/60-17 |
| Rear Tyre: | 160/60 ZR7 | 180/80 -18 | 130/80- 17 | 180/55-17 |
| Fuel Capacity: | 15 Litres / 4.0 US gal | 7.5 Litres / 2.0 US gal | 12 Litres / 3.1 US gal | 16 Litres / 4.2 US gal |