Kawasaki Ninja 125 (2019) vs Yamaha YZF-R 3 (2021) vs Kawasaki ER-5 Twister (1997-99)
Comparison technical specifications
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| Make: | Kawasaki | Yamaha | Kawasaki |
| Model: | Ninja 125 | YZF-R 3 | ER-5 Twister |
| Years: | 2019 | 2021 | 1997-99 |
| Engine: | Four stroke, single cylinder, DOCH, 4 valve | Four stroke, parallel twin cylinder, DUHC, 4 valve per cylinder | Four stroke, parallel twin cylinders, DOHC, 4 valves per cylinder. |
| Capacity: | 125 cc / 7.6 cu in | 321 cc / 19.5 cu-in | 498 cc / 30.4 cu-in |
| Bore x Stroke: | 58.0 x 47.2mm | 68.0 x 44.1mm | 74 x 58 mm |
| Compression Ratio: | 11.7:1 | 11.2:1 | 9.8:1 |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled |
| Induction: | Fuel injection (ø28 x 1) | Electronic Fuel Injection, 32 mm throttle body | 2x 34mm Keihin CVK |
| Ignition: | B&C (TCBI, B. P&EL. ADV.) | TCI: Transistor Controlled Ignition | Digital |
| Starting: | Electric | Electric | Electric |
| Max Power: | 11.0 kW / 14.8 hp @ 10,000 rpm | 30.9 kW 41.4 hp @ 10750 rpm | 50 hp / 36.5 kW @ 8500 rpm |
| Max Torque: | 11.7 Nm / 8.6 lb-ft @ 7,700 rpm | 29.6 Nm / 3.0 kg-m @ 9000 rpm | 45.2 Nm / 33.2 lb-ft @ 7000 rpm |
| Transmission: | 6 Speed, return shift | Constant Mesh, 6-speed | 6 Speed |
| Final Drive: | Chain | “O” ring chain | Chain |
| Front Suspension: | 37mm Telescopic Fork | 37 mm USD Inverted telescopic fork | 37 mm telescopic fork |
| Front Wheel Travel: | 110mm / 4.3 in | 130 mm / 5.1 in | 125 mm / 4.9 in |
| Rear Suspension: | Uni Track Swingarm | Monocross single Kayaba shock, adjustable preload | Dual rear shocks with 5-way adjustable preload |
| Front Brakes: | Single 290mm Disc, Dual Piston Calipers | Single 298mm disc 2 piston caliper | Single 280mm disc 2 piston caliper |
| Rear Brakes: | Single 220mm Disc | Single 220mm disc 1 piston caliper | 160mm drum |
| Front Tyre: | 100/80-17M/C 52S | 110/70-17M/C 54H | 110/70 R17 |
| Rear Tyre: | 130/70-17M/C 62S | 140/70-17M/C 66H | 130/70 R17 |
| Wheelbase: | 1330 mm / 52.4 in | 1379.2 mm / 54.3 in | 1430 mm / 56.3 in |
| Seat Height: | 785 mm / 31 in | 780 mm / 30.7 in | 815 mm / 32.1 in |
| Fuel Capacity: | 11 Litres / 2.9 US gal | 14 Litres / 3.7 US gal | 17 Litres / 4.4 US gal |