Gilera RC 250 Rally (1985) vs Gilera ER 125 (1986-) vs Gilera RX 125 Arizona (1986-)
Comparison technical specifications
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| Make: | Gilera | Gilera | Gilera |
| Model: | RC 250 Rally | ER 125 | RX 125 Arizona |
| Years: | 1985 | 1986- | 1986- |
| Engine: | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, | Two stroke, single cylinder, reed valves induction |
| Capacity: | 248.9 cc / 15.2 cu-in | 124 cc / 7.6 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 71 x 62 mm | 56 x 50 mm | 56 x 50 mm |
| Compression Ratio: | 13.5:1 | 13.4:1 | 13.4:1 |
| Induction: | 32mm Dell'Orto carburetor | Dell'Orto premix carburetor | 2x 26mm Dell'Orto carburetor |
| Ignition: | Electronic | Electronic CDI | CDI |
| Starting: | Kick | Kick | kick |
| Max Power: | 38 hp / 28.3 kW @ 7500 rpm | 20.7 hp / 15.4 kW @ 9200 rpm | 24 hp /18 kW @ 9250 rpm |
| Max Torque: | 31.3 Nm / 23.1 lb-ft @ 7000 rpm | 15.5 Nm / 11.5 lb-ft @ 8800 rpm | 1.5 kgf-m @ 10500 rpm |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic forks | Telescopic forks |
| Rear Suspension: | Swing arm gas single shock | Alloy swing arm adjustable single shock | Swing arm gas single shock |
| Front Brakes: | Single 260mm disc | Single 240mm disc | Single 220 mm disc |
| Rear Brakes: | Single 220mm disc | Drum | 140 mm Drum |
| Front Tyre: | 90/90-21 | 2.75-21 | 2.75-21 |
| Rear Tyre: | 2.50-17 | 4.60-17 | 4.10-18 |
| Fuel Capacity: | 15 Litres / 3.9 US gal | 16 Litres / 4.2 US gal |