Gilera TG1-125 (1980) vs Gilera RX 250 Amizonas (1985) vs Gilera MX-1 125 (1988) vs Gilera XR2-125 (1990-) vs Gilera KZ 125 (1988-89) vs Gilera Saturno Bialbero 500 (1990-)
Comparison technical specifications
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| Make: | Gilera | Gilera | Gilera | Gilera | Gilera | Gilera |
| Model: | TG1-125 | RX 250 Amizonas | MX-1 125 | XR2-125 | KZ 125 | Saturno Bialbero 500 |
| Years: | 1980 | 1985 | 1988 | 1990- | 1988-89 | 1990- |
| Engine: | Two stroke, single cylinder | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, reed valve | Four stroke, single cylinder, 4 valves |
| Capacity: | 122.5 cc / 7.5 cu-in | 248.9 cc / 15.2 cu-in | 124 ccc / 7.6 cu-in | 124 ccc / 7.6 cu-in | 124 ccc / 7.6 cu-in | 492 cc / 30.0 cu-in |
| Bore x Stroke: | 57 x 48 mm | 71 x 62 mm | 56 x 50.5 mm | 56 x 50.5 mm | 56 x 50.5 mm | 92 x 74 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Induction: | Carburetor | 32mm Dell'Orto carburetor | 28 Dell'Orto PHBH carburetors | Dell'Orto premix | 28 Dell'Orto PHBH carburetors | Dell'Orto PHM 40VS |
| Starting: | Kick | Kick | Electric | Kick | Electric | Electric |
| Max Power: | 14.5 hp @ 7300rpm | 38 hp / 28.3 kW @ 7500 rpm | 29.3 hp / 21.8 kW @ 9900 rpm | 24 hp / 18 kW @ 9250 rpm | 29.3 hp / 21.8 kW @ 9900 rpm | 44 hp / 32.1 kW @ 7000 rpm |
| Final Drive: | Chain | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic forks | 35mm Marzocchi telescopic-hydraulic forks | Paioli upside down forks, 230mm wheel travel | Fork traditional 36mm. Antidive adjustable | 40mm Marzocchi forks |
| Rear Suspension: | Dual shocks | Alloy swing arm adjustable single shock | Fork in die cast aluminium, Boge single shock absorber fork in die cast aluminium, Boge single shock absorber | Boge single shock | Hydraulic shock absorber adjustable in spring preload Court Cosso | Single Marzocchi shock preload adjustment. |
| Front Brakes: | Single 260mm disc | Single 240mm disc | Single 260mm disc | Single disc | Single 240mm disc 2 piston caliper | Single 300mm disc 1 piston caliper |
| Rear Brakes: | Drum | Drum | Single 240mm disc | Single disc | Single 240mm disc | Single 240mm disc 1 piston caliper |
| Front Tyre: | 2.75-18 | 2.75-21 | 100/90-16 | 2.75-21 | 100/80-16 | 110/70 VR17 |
| Rear Tyre: | 3.00-18 | 4.60-17 | 120/80-16 | 4.10-17 | 120/80-16 | 140/70 VR17 |
| Fuel Capacity: | 10 Litres / 2.6 US gal | 15 Litres / 3.9 US gal | 17 Litres / 4.5 US gal | 22 Litres / 5.8 US gal | 21 Litres / 5.5 US gal |