Kawasaki KDX 250R (1993-95) vs Suzuki Boulevard C90 B.O.S.S (2017-18) vs Gilera RX 200 Arizona Hawk (1985) vs Suzuki GSF 600S Bandit (1996-99) vs Yamaha DT 125X (2005-07)
Comparison technical specifications
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| Make: | Kawasaki | Suzuki | Gilera | Suzuki | Yamaha |
| Model: | KDX 250R | Boulevard C90 B.O.S.S | RX 200 Arizona Hawk | GSF 600S Bandit | DT 125X |
| Years: | 1993-95 | 2017-18 | 1985 | 1996-99 | 2005-07 |
| Engine: | Two stroke, single cylinder, reed valve | Four stroke, 54° V-twin, SOHC, 3 valves per cylinder | Two stroke, single cylinder | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, single cylinder, reed-valve |
| Capacity: | 249 cc / 15.2 cu-in | 1462 cc / 89.2 cu-in | 183 cc / 11.1 cu-in | 599 cc / 36.6 cu in | 123 cc / 7.5 cu-in |
| Bore x Stroke: | 67.4 х 70 mm | 96 x 101 mm | 68 x 50.5 mm | 62.6 x 48.7 mm | 56 X 50 mm |
| Compression Ratio: | 10.2:1 | 9.5:1 | 9.5:1 | 11.3:1 | 6.8:1 |
| Induction: | KEIHIN PWK-38. carburetor | Fuel injected | Dell'Orto premix | Keihin CVR32 carburetors | Mikuni 28 SS |
| Ignition: | CDI | Digital transistorized | Electronic | Digital Transistorized | CDI |
| Starting: | Electric | Electric | Kick | Electric | Kick |
| Max Power: | 40 hp / 29.8 kW @ 7000 rpm | 49.2 kW / 66 hp @ 4800 rpm | 26 hp / 19 kW @ 7500 rpm | 57.4 kW / 77 hp @ 10500 rpm (at rear tyre: 54 kW / 72.4 hp @ 10400 rpm ) | 14.7 hp / 10.8 kW @ 7000 rpm |
| Front Suspension: | 43mm conventional cartridge fork | Telescopic, coil springs, oil damped | Telescopic forks | 41 mm Telescopic, oil damped | 41mm Telescopic forks |
| Rear Suspension: | UNI-TRAK® single-shock system | Link type, coil spring, oil damped | Alloy swing arm adjustable single shock | Mono-shock, 4-way adjustable rebound damping, 7-way adjustable preload | Monocross linkage |
| Front Brakes: | Single 250mm disc 2 piston caliper | Dual 300 mm discs, 4 piston caliper | Single 240mm disc | 2 x 290 mm Discs, 2 piston calipers | Single 298mm disc |
| Rear Brakes: | Single 230mm disc 1 piston caliper | Single 180 mm disc, 2 piston caliper | Drum | Single 240 mm disc, 1 piston caliper | Single 220mm disc |
| Front Tyre: | 80/100-21 | 130/80-17M/C 65H, tubeless | 2.75-21 | 110/70-17 | 120/70-17 |
| Rear Tyre: | 110/100-18 | 200/60-16M/C 79H, tubeless | 4.60-17 | 150/70-17 | 140/60-17 |
| Fuel Capacity: | 12.5 Litres / 3.3 US gal | 18 Litres / 4.8 US gal | 15 Litres / 3.9 US gal | 19 Litres / 5.2 US gal / 4.3 Imp gal | 10.7 Litres / 2.8 US gal |