Yamaha YZF 600 R6 (2007) vs Yamaha YZF-R 25 (2016-17) vs Harley-Davidson Harley Davidson XL 1200R Sportster Roadster (2020) vs Kawasaki ZZ-R 1100 D (1994)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Harley-Davidson | Kawasaki |
| Model: | YZF 600 R6 | YZF-R 25 | Harley Davidson XL 1200R Sportster Roadster | ZZ-R 1100 D |
| Years: | 2007 | 2016-17 | 2020 | 1994 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, parallel twin cylinder, DOHC, 4 valve per cylinder | Four stroke, 45° V-Twin, OHV, 2 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 599 cc / 36.5 cu-in | 249 cc / 15.1 cu-in | 1202 cc / 73.4 cub in. | 1052 cc / 64.1 cu-in |
| Bore x Stroke: | 67 x 42.5 mm | 60 x 44.1 mm | 88.9 x 96.8 mm | 11.0:1 |
| Compression Ratio: | 12.4;1 | 11.6:1 | 10.0:1 | 76 x 58 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Air cooled | Liquid cooled, |
| Induction: | Fuel Injection 38mm throttle bodies | Electronic Fuel Injection | Electronic Sequential Port Fuel Injection (ESPFI) | 4x Keihin CVKD40 carbs |
| Ignition: | TCI | TCI: Transistor Controlled Ignition | Digital CDI | Battery and coil (transistorized) |
| Starting: | Electric | Electric | Electric | Electric |
| Max Torque: | 69.1 Nm / 7.05 kg-m @ 11000 rp @ 1100 rpm | 22.1 Nm / 16.7 lb-ft @ 10000 rpm | 103 Nm (76 lb-ft) @ 3,750 rpm | 110 Nm / 11.2 kgf-m @ 8500 rpm |
| Transmission: | 6 Speed | Constant Mesh, 6-speed | 5 Speed | 6 Speed |
| Final Drive: | O-ring Chain | Chain | Belt | Chain |
| Frame: | Deltabox aluminium frame with revised rigidity balance | Delta box | Mild steel, tubular frame; circular sections; cast junctions Swingarm Mild steel, rectangular tube section, stamped junctions; MIG welded | Pressed aluminium perimeter |
| Front Suspension: | 41mm upside down forks with 2-way compression damping adjustable | 41mm KYB® telescopic fork; | 43 mm inverted front forks with premium cartridge dampening technology and triple clamp design | 43mm forks preload and rebound adjustable. |
| Rear Suspension: | Fully adjustable rear shock absorber with 2-way compression damping | KYB® single shock | Premium emulsion technology rear shocks with screw style pre-load adjustment | Monoshock fully adjustable. |
| Front Brakes: | 2x 320mm discs | Single 298mm disc 2 piston caliper | 2x 300mm floating discs, 2 piston caliper | 2x 320mm discs 4 piston calipers |
| Rear Brakes: | Single 220mm disc | Single 220mm disc | Single 292mm disc, 1 piston caliper | Single 240mm disc 1 piston caliper |
| Front Tyre: | 120/70 ZR17 | 110/70-17M/C 54H | 120/70R19 M/C | 120/70 VR17 |
| Rear Tyre: | 180/55 ZR17 | 140/70-17M/C 66H | 150/70R18 M/C | 180/55 VR17 |
| Wheelbase: | 1380 mm / 53.4 in | 1379.2 mm / 54.3 in | 1505 / 59.3 in | 1495 mm / 58.86 in |
| Ground Clearance: | 130 mm / 5.1 in | 160 mm / 6.2 in | 150 mm / 6 in | 110 mm / 4.33 in |
| Seat Height: | 850 mm / 33.5 in | 779.7 mm / 30.7 in | Unladen 785 mm / 30.9in | 780 mm 30.7 in |
| Fuel Capacity: | 17.5 Litres / 4.6 gal | 14 Litres / 3.7 gal | 12.5 Litres / 3.3 US gal | 24 Litres / 6.3 us gal |