Derbi GPR 125 Nude (2005-) vs Derbi GPR 125 (2011-) vs Sunbeam Model 8 (1924-31) vs Yamaha XJ6 (2009-10)
Comparison technical specifications
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| Make: | Derbi | Derbi | Sunbeam | Yamaha |
| Model: | GPR 125 Nude | GPR 125 | Model 8 | XJ6 |
| Years: | 2005- | 2011- | 1924-31 | 2009-10 |
| Engine: | Two stroke, single cylinder | Two stroke, single cylinder | Single cylinder, OHV | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Capacity: | 124.7 cc / 7.6 cu-in | 124.7 cc / 7.6 cu-in | 347 cc / 21.2 cu in | 600 cc / 36.6 cu-in |
| Bore x Stroke: | 56 x 50 mm | 56 x 50 mm | 70 x 90 mm | 65.5 x 44.5 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Air cooled | Liquid cooled |
| Induction: | 28mm Mikuni | 28mm Mikuni | AMAC carburettor | Group injection type fuel injection |
| Starting: | Electric | Electric | Kick | Electric |
| Transmission: | 6 Speed | 6 Speed | 3-Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Inverted fork. 120mm wheel travel | 40mm Fourche USD hydraulic forks, 120mm wheel travel | Druid forks | 43mm Telescopic fork, 130mm wheel travel |
| Rear Suspension: | Monoshock 110mm wheel travel | Monoshock, 110mm wheel travel | Rigid, spring loaded saddle | Swingarm Link less type Monocross, 130mm wheel travel |
| Front Brakes: | Single 300mm disc 4 piston caliper | Single 300mm disc 4 piston caliper | Drum, internal expanding | 2x 298 mm discs |
| Rear Brakes: | Single 180mm disc 2 piston caliper | Single 180mm disc 2 piston caliper | Drum, internal expanding | Single 245 mm disc |