Kawasaki KLX 250S (2009-10) vs Kawasaki ZX-6R (2008) vs Kawasaki Z1-R Turbo (1978-79) vs Kawasaki KLR 650 (2004-05)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki | Kawasaki | Kawasaki |
| Model: | KLX 250S | ZX-6R | Z1-R Turbo | KLR 650 |
| Years: | 2009-10 | 2008 | 1978-79 | 2004-05 |
| Engine: | Four stroke, single cylinder, DOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 2 Valve per cylinder. | Four stroke, single cylinder, DOHC, 4 valve |
| Capacity: | 249 cc / 15.2 cu-in | 599 cc / 36.6 cub in | 1015 cc / 61.9 cu-in | 651 cc / 39.7 cu-in |
| Bore x Stroke: | 72 х 61.2 mm | 67 x 42.5 mm | 69.4 х 66 mm | 100 Ñ… 83 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 11.0:1 | 13.9:1 | 8.0:1 | 9.5:1 |
| Induction: | Keihin CVK34 carburetor | DFI® with four 38mm Keihin throttle bodies, oval sub-throttles, two injectors per throttle body | 40mm Bendix carb | Keihin CVK40 carburetor |
| Ignition: | Digital CDI | TCBI with Digital advance | Battery & coil ignition | Digital TCBI |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 27 hp / 22.3 kW @ 8500 rpm | 91.9 kW /125 hp @ 14000 rpm | 126 hp / 93.2 kW @ 8000 rpm | 48 hp / 35.0 kW @ 6500 rpm |
| Transmission: | 6 Speed | 6 Speed | 5 Speed | 5 Speed |
| Final Drive: | Chain | X-ring chain | Chain | Chain |
| Front Suspension: | 43 mm Inverted cartridge fork with 16-Way compression damping adjustment | 41 mm inverted cartridge fork with top-out springs, stepless rebound damping, stepless compression damping, fully-adjustable spring preload | 36mm Telescopic forks | 38mm Air assisted Kayaba forks |
| Rear Suspension: | Uni-Trak® with Adjustable preload, 16-Way compression and Rebound damping adjustment | Bottom-Link Uni-Trak® with gas-charged shock, top-out spring and pillow ball upper mount, dual-range (high/low-speed) stepless compression damping, 25-way Adjustable rebound damping, fully-adjustable spring preload | Dual shocks with 5-way spring preload. | Single Kayaba shock |
| Front Brakes: | Single 250mm disc 2 piston caliper | 2 x 300mm discs, 4 piston calipers | 2x 295mm discs | Single 230mm disc |
| Rear Brakes: | Single 230mm disc 1 piston caliper | Single 210mm disc, 1 piston caliper | Single 295mm disc | Single 204mm disc |
| Front Tyre: | 80/100-21 | 120/65 ZR17 | 100/90 18 | 90/90 -21 |
| Rear Tyre: | 100/100-18 | 180/55 ZR17 | 120/90 V18 | 130/80-17 |
| Wet Weight: | 135 kg / 297.7 lbs | 190 kg / 418 lbs | 245 kg / 540 lbs | 189 kg / 416 lbs |
| Fuel Capacity: | 7.2 Litres / 2.0 US gal | 17 Litres / 4.5 US gal | 13 Litres / 3.4 US gal | 23 Litres / 6.0 US gal |