Yamaha YZF 600R Thundercat (2001) vs Kawasaki KLX 250S (2006-08)
Comparison technical specifications
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| Make: | Yamaha | Kawasaki |
| Model: | YZF 600R Thundercat | KLX 250S |
| Years: | 2001 | 2006-08 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, DOHC, 4 valve |
| Capacity: | 599 cc / 36.5 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 62 x 49.6 mm | 72 х 61.2 mm |
| Cooling System: | Liquid cooled | Liquid cooled |
| Compression Ratio: | 12.0:1 | 11.0:1 |
| Induction: | 4 x 36 mm Keihin CV downdraft carburetors | Keihin CVK34 carburetor |
| Ignition: | Digital TCI | Digital CDI |
| Starting: | Electric | Electric |
| Max Power: | 72.9 kW / 100 hp @ 11500 rpm | 27 hp / 22.3 kW @ 8500 rpm |
| Max Power Rear Tyre: | 67.9 kW / 91.0 hp @ 11500 rpm | 23.5 hp @ 8200 rpm |
| Max Torque: | 65.7 Nm / 6.7 kgf-m / 48.7 lb-ft @ 9500 rpm | 2.6 kgf-m / 18.5 lb-ft @ 7500 rpm |
| Transmission: | 6 Speed | 6 Speed |
| Final Drive: | 530 O-ring chain OEM sprocket sizes per tooth Front= 15 Back= 47 | Chain |
| Frame: | Twin spar, steel, delta box | Steel, Double cradle frame |
| Front Suspension: | 41 mm telescopic fork adjustable preload, compression and rebound damping | 43 mm Inverted cartridge fork with 16-Way compression damping adjustment |
| Front Wheel Travel: | 130 mm / 5.1 in | 285 mm / 11.2 in |
| Rear Suspension: | Monoshock adjustable preload, bump and rebound | Uni-Trak® with Adjustable preload, 16-Way compression and Rebound damping adjustment |
| Rear Wheel Travel: | 120 mm / 4.7 in | 280 mm / 11.0 in |
| Front Brakes: | 2x 300 mm Discs, 4 piston calipers | Single 250mm disc 2 piston caliper |
| Rear Brakes: | Single 245mm disc, 2 piston caliper | Single 230mm disc 1 piston caliper |
| Front Tyre: | 120/60-17 | 80/100-21 |
| Rear Tyre: | 160/60-17 | 100/100-18 |
| Rake: | 25.0° | 25.5° |
| Trail: | 97 mm / 3.82 in | 74mm / 2.9 in |
| Seat Height: | 810 mm / 31.7 in | 883 mm / 34.8 in |
| Dry Weight: | 189 kg / 417 lbs | 122 kg / 269 lbs |
| Wet Weight: | 210 kg / 463 lbs | 135 kg / 297.7 lbs |
| Fuel Capacity: | 19 Litres / 5.0 US gal / 4.2 Imp gal | 7.2 Litres / 2.0 US gal |