Yamaha YZF-R 25 (2018-19) vs Suzuki GS 650E (1981-82) vs Harley-Davidson Harley Davidson FLHTK Electra Glide Ultra Limited (2017-18) vs Harley-Davidson Harley Davidson FLRT Freewheeler (2017-18)
Comparison technical specifications
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| Make: | Yamaha | Suzuki | Harley-Davidson | Harley-Davidson |
| Model: | YZF-R 25 | GS 650E | Harley Davidson FLHTK Electra Glide Ultra Limited | Harley Davidson FLRT Freewheeler |
| Years: | 2018-19 | 1981-82 | 2017-18 | 2017-18 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder | Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder. | Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder | Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder |
| Capacity: | 249 cc / 15.1 cu-in | 673 cc / 41 cu in | 1746 cc / 107 cub in | 1746 cc / 107 cub in. |
| Bore x Stroke: | 60 x 44.1 mm | 62 x 55.8 mm | 100 x 111 mm | 100 x 111 mm |
| Cooling System: | Liquid cooled | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 11.6:1 | 9.4:1 | 10.0:1 | 10.0:1 |
| Induction: | Electronic Fuel Injection | 4 x 32mm Mikuni carburetors | Electronic Sequential Port Fuel Injection (ESPFI) | Electronic Sequential Port Fuel Injection (ESPFI) |
| Ignition: | TCI: Transistor Controlled Ignition | Transistorized | Single-fire, non-wasted, map-controlled spark ignition | Single-fire, non-wasted, map-controlled spark ignition |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 22.1 Nm / 16.7 lb-ft @ 10000 rpm | 57 Nm / 5.8 kgf-m / 42 lb-ft @ 8000 rpm | 154 Nm / 113.6 lb-ft @ 3250 rpm | 154 Nm / 113.6 lb-ft @ 3250 rpm |
| Transmission: | Constant Mesh, 6-speed | 5 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Belt | Belt |
| Front Tyre: | 110/70-17M/C 54H | 3.25 H19 | 130/80B17 65H | MT 130/60B19 M/C 61H |
| Rear Tyre: | 140/70-17M/C 66H | 3.75H 18 | 180/65B16 81H | 2x P205/65R15 |
| Fuel Capacity: | 14 Litres / 3.7 gal | 16 Litres / 4.2 US gal / 3.5 Imp mpg | 22.7 Litres / 6 US gal | 22.7 Litres / 6.0 US gal |