| DUCATI ST4 | APRILIA RS 457 |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled, four-stroke, 90-degree V-Twin, DOHC, desmodromic 4 valves per cylinder | liquid-cooled twin-cylinder engine with dual camshaft timing and four valves per cylinder |
| Displacement | |
| 916 cm3 | - |
| Bore X Stroke | |
| 3.7x2.6 in OR 94 mm | - |
| Compression Ratio | |
| 11.0:1 | - |
| Horsepower | |
| 105/9000 KW(hp)/RPM | 48/- KW(hp)/RPM |
| Torque | |
| 66/7500 lb-ft/RPM OR 89/7500 Nm/RPM | - |
| Fuel System | |
| EFI | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 6-speed, manual | - |
| Clutch | |
| wet multi-disc, manual | - |
| Primary Drive | |
| straight cut gears | - |
| Final Drive | |
| chain | - |
| chassis specs | |
| Frame | |
|---|---|
| steel, trellis | Aluminium frame |
| Front Suspension | |
| 43mm Showa fully-adjustable upside-down fork | - |
| Rear Suspension | |
| Sachs fully-adjustable monoshock with progressive linkage | - |
| Front Brake | |
| dual 320mm discs, 4-piston calipers | - |
| Rear Brake | |
| single 245mm disc, 2-piston caliper | - |
| dimension specs | |
| Seat Height | |
|---|---|
| 32.3 in OR 820 mm | - |
| Weight | |
| 474 lbs OR 215 kg | 351 lbs OR 159 kg |
| Fuel Capacity | |
| 5.5 gallons OR 20.8 L | - |
| Wheelbase | |
| 56.3 in OR 1430 mm | - |
| tyres specs | |
| Front | |
|---|---|
| 120/70 ZR17 | - |
| Rear | |
| 180/55 ZR17 | - |
