Derbi GPR 125 (2011-) vs ATK 500 (2003)
Comparison technical specifications
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| Make: | Derbi | ATK |
| Model: | GPR 125 | 500 |
| Years: | 2011- | 2003 |
| Engine: | Two stroke, single cylinder | Four stroke. single cylinder, DOHC, 4 valves |
| Capacity: | 124.7 cc / 7.6 cu-in | 494 cc / 30.1 cu in |
| Bore x Stroke: | 56 x 50 mm | 97 x 81 mm |
| Cooling System: | Liquid cooled | Air cooled |
| Compression Ratio: | 12.5:1 | 9.5:1 |
| Induction: | 28mm Mikuni | 40 mm Dell'Orto carb |
| Ignition: | Electronic CDI | 190 W |
| Starting: | Electric | Kick |
| Transmission: | 6 Speed | 6-Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | 40mm Fourche USD hydraulic forks, 120mm wheel travel | Telescopic fork |
| Rear Suspension: | Monoshock, 110mm wheel travel | Swingarm, monoshock |
| Front Brakes: | Single 300mm disc 4 piston caliper | Single 260 mm disc, 2-piston caliper |
| Rear Brakes: | Single 180mm disc 2 piston caliper | Single 220 mm disc, 1-piston caliper |
| Front Tyre: | 110/70 -17 | 80/100-21 |
| Rear Tyre: | 140/70 -17 | 110/100-18 |
| Dry Weight: | 123 kg / 271 lbs | 129 kg / 284 lbs |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 16.5 Litres / 4.4 US gal |