Gilera MX-1 125 (1988) vs Gilera KZ 125 (1988-89) vs Gilera Saturno Bialbero 500 (1990-) vs Gilera Nexus 500 (2003-06)
Comparison technical specifications
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| Make: | Gilera | Gilera | Gilera | Gilera |
| Model: | MX-1 125 | KZ 125 | Saturno Bialbero 500 | Nexus 500 |
| Years: | 1988 | 1988-89 | 1990- | 2003-06 |
| Engine: | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, reed valve | Four stroke, single cylinder, 4 valves | Liquid cooled, four stroke, single cylinder |
| Capacity: | 124 ccc / 7.6 cu-in | 124 ccc / 7.6 cu-in | 492 cc / 30.0 cu-in | 460 cc / 28.0 cu-in |
| Bore x Stroke: | 56 x 50.5 mm | 56 x 50.5 mm | 92 x 74 mm | 92 x 69 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 13.0;1 | 13.0;1 | 9.8:1 | 10.5:1 |
| Induction: | 28 Dell'Orto PHBH carburetors | 28 Dell'Orto PHBH carburetors | Dell'Orto PHM 40VS | Magneti Marelli IAV Electronic injection |
| Ignition: | Electric ignition with capacitive output | CDI | CDI with rev limiter | Electronic inductive discharge |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 29.3 hp / 21.8 kW @ 9900 rpm | 29.3 hp / 21.8 kW @ 9900 rpm | 44 hp / 32.1 kW @ 7000 rpm | 40.1 hp / 29.3 kW @ 7500 rpm |
| Max Torque: | 18 Nm / 13.2 lb-ft @ 10250 rpm | 18 Nm / 13.2 lb-ft @ 10250 rpm | 4.7 kgf-m @ 6000 rpm | 43 Nm / 31.7 lb-ft @ 5500 rpm |
| Final Drive: | Chain | Chain | Chain | Belt |
| Front Suspension: | 35mm Marzocchi telescopic-hydraulic forks | Fork traditional 36mm. Antidive adjustable | 40mm Marzocchi forks | 41mm Kayaba telehydraulic fork |
| Rear Suspension: | Fork in die cast aluminium, Boge single shock absorber fork in die cast aluminium, Boge single shock absorber | Hydraulic shock absorber adjustable in spring preload Court Cosso | Single Marzocchi shock preload adjustment. | Progressive POWER DRIVE, Kayaba gas shock absorber with spring preload |
| Front Brakes: | Single 260mm disc | Single 240mm disc 2 piston caliper | Single 300mm disc 1 piston caliper | 2x 260mm discs 2 piston calipers |
| Rear Brakes: | Single 240mm disc | Single 240mm disc | Single 240mm disc 1 piston caliper | Single 240mm discs 2 piston calipers |
| Front Tyre: | 100/90-16 | 100/80-16 | 110/70 VR17 | 120/70-15 |
| Rear Tyre: | 120/80-16 | 120/80-16 | 140/70 VR17 | 160/60-14 |
| Fuel Capacity: | 17 Litres / 4.5 US gal | 21 Litres / 5.5 US gal | 15 Litres / 3.9 US gal | |
| Consumption Average: | 22.3 km/lit | 19.9 km/lit | 20.3 km/lit | 17.8 km/lit |
| Standing ¼ Mile: | 15.7 sec / 132.9 km/h | 15.8 sec / 133.1 km/h | 13.9 sec / 149.4 km/h | 15.1 sec |
| Top Speed: | 157.3 km/h | 152.6 km/h / 95 mph | 177.3 km/h / 110 mph | 160.6 km/h / 100 mph |