Aprilia SX 125 (2012-) vs Kawasaki Z 400 Custom (1982-84)
Comparison technical specifications
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| Make: | Aprilia | Kawasaki |
| Model: | SX 125 | Z 400 Custom |
| Years: | 2012- | 1982-84 |
| 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. |
| Capacity: | 125 cc / 7.6 cu-in | 399 cc / 24.3 cu-in |
| Bore x Stroke: | 54 x 54.5 mm | 52 х 47mm |
| Compression Ratio: | 12.5:1 | 9.4:1 |
| Cooling System: | Liquid cooled | Air cooled |
| Induction: | Dell’Orto VHST 28 | 2x Keihin CV32 6caburetor |
| Ignition: | Electronic CDI | Battery & coil |
| Starting: | Kick | Electric & kick |
| Max Power: | 16.4 kW / 22 hp | 36 hp @ 8500 rpm |
| Max Torque: | 16.0 Nm / 1.6 kgf-m / 11.8 ft-lb | 3.2 kgf-m @ 7500 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Upside down telescopic fork, Ø40 mm | Telescopic forks |
| Rear Suspension: | Steel swingarm. Hydraulic monoshock with piggy back cylinder | Dual shocks |
| Front Brakes: | Single 260 mm disc, sliding 2 piston caliper, Brembo | Single 236mm disc |
| Rear Brakes: | Single 220 mm disc, sliding 1 piston caliper | Single 140mm drum |
| Front Tyre: | 110/70 17 | 90/90-19 |
| Rear Tyre: | 150/60 17 | 110/90-18 |
| Dry Weight: | 115 kg / 254 lbs | 166 kg / 366 lbs |
| Fuel Capacity: | 10 Litres / 2.6 US gal |