Aprilia SX 125 (2012-) vs Kawasaki Z 400 Custom (1982-84) vs Aprilia RSV 1000R Factory (2004)
Comparison technical specifications
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| Make: | Aprilia | Kawasaki | Aprilia |
| Model: | SX 125 | Z 400 Custom | RSV 1000R Factory |
| Years: | 2012- | 1982-84 | 2004 |
| Engine: | Two stroke, single cylinder Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard. | Four stroke, transverse four cylinder, DOHC, 2 Valve per cylinder. | Four stroke, longitudinal 60°V twin, DOHC, 4 valves per cylinder |
| Capacity: | 125 cc / 7.6 cu-in | 399 cc / 24.3 cu-in | 997.6 cc / 60.9 cu-in |
| Bore x Stroke: | 54 x 54.5 mm | 52 х 47mm | 97 x 67.5mm |
| Compression Ratio: | 12.5:1 | 9.4:1 | 11.8:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Induction: | Dell’Orto VHST 28 | 2x Keihin CV32 6caburetor | Integrated electronic engine management system. Indirect multipoint electronic injection. Throttle body diameter 57mm. |
| Ignition: | Electronic CDI | Battery & coil | Digital electronic with one spark plugs per cylinder |
| Starting: | Kick | Electric & kick | Electric |
| Max Power: | 16.4 kW / 22 hp | 36 hp @ 8500 rpm | 102 kW / 139 hp @ 9500 rpm |
| Max Torque: | 16.0 Nm / 1.6 kgf-m / 11.8 ft-lb | 3.2 kgf-m @ 7500 rpm | 107 Nm / 10.9 kgf-m / 78.9 lb-ft @ 7500 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain, 40/16 (2.5) |
| Front Suspension: | Upside down telescopic fork, Ø40 mm | Telescopic forks | Öhlins 43 mm diameter upside-down fork with adjustable compression rebound and preload |
| Rear Suspension: | Steel swingarm. Hydraulic monoshock with piggy back cylinder | Dual shocks | Aluminium alloy double banana swing arm, APS progressive system linkage. Öhlins gas nytrogen hydraulic shock-absorber with adjustable rebound, compression, preload and length |
| Front Brakes: | Single 260 mm disc, sliding 2 piston caliper, Brembo | Single 236mm disc | 2 x 320 mm discs, 4 piston radial calipers, Brembo |
| Rear Brakes: | Single 220 mm disc, sliding 1 piston caliper | Single 140mm drum | Single 220 mm disc, 2 piston radial caliper, Brembo |
| Front Tyre: | 110/70 17 | 90/90-19 | 120/70 ZR17 |
| Rear Tyre: | 150/60 17 | 110/90-18 | 190/50 ZR17 |
| Dry Weight: | 115 kg / 254 lbs | 166 kg / 366 lbs | 185 Kg / 408 lbs |
| Fuel Capacity: | 10 Litres / 2.6 US gal | 18 Litres / 4.8 US gal |