Aprilia SX 125 (2010-) vs Royal Enfield Bullet 500 (1990)
Comparison technical specifications
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| Make: | Aprilia | Royal Enfield |
| Model: | SX 125 | Bullet 500 |
| Years: | 2010- | 1990 |
| Engine: | Two stroke, single cylinder Aluminium cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard. | Four Stroke, single Cylinder, OHV, 2 valve |
| Capacity: | 125 cc / 7.6 cu-in | 499 cc / 30.4 cu-in |
| Bore x Stroke: | 54 x 54.5 mm | 84 x 90 mm |
| Compression Ratio: | 12.5:1 | 8.5:1 |
| Cooling System: | Liquid cooled | Air Cooled |
| Induction: | Dell’Orto VHST 28 | Carburettor |
| Starting: | Kick | Kick |
| Max Power: | 16.4 kW / 22 hp | 27.2 hp / @ 5250 rpm |
| Max Torque: | 16.0 Nm / 1.6 kgf-m / 11.8 ft-lb | 41.3 Nm / 30.4 lb-ft @ 4000 rpm |
| Transmission: | 6 Speed | 4 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Upside down telescopic fork, Ø40 mm | Telescopic, Hydraulic Damping, Stroke 130 mm wheel travel |
| Rear Suspension: | Steel swingarm. Hydraulic monoshock with piggy back cylinder | Swing Arm With Gas Shock Absorbers, Stroke 80 mm wheel travel |
| Front Brakes: | Single Ø260 mm disc, sliding 2 piston caliper, Brembo | Drum |
| Rear Brakes: | Single Ø220 mm disc, sliding 1 piston caliper | Drum |
| Front Tyre: | 110/70 17 | 90/90 -19 |
| Rear Tyre: | 150/60 17 | 100/90 -19 |
| Seat Height: | 870 mm / 34.3 in | 800 mm / 31.5 in |
| Dry Weight: | 115 kg / 254 lbs | 168.0 kg / 370.4 lbs |
| Fuel Capacity: | 10 liters / 2.6 US gal | 13.5 Litres / 3.2 US gal |