Ducati 851 Strada Tricolore and Superbike Kit (1988) vs Aprilia SX 50 (2014-15)
Comparison technical specifications
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| Make: | Ducati | Aprilia |
| Model: | 851 Strada Tricolore and Superbike Kit | SX 50 |
| Years: | 1988 | 2014-15 |
| Engine: | Four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven | Single cylinder, two stroke |
| Capacity: | 851 cc / 51.9 cu in | 49.9 cc / 3.04 cu in |
| Bore x Stroke: | 92 x 64 mm | 39.9 x 40 mm |
| Compression Ratio: | Strada: 10.2:1 Kit: 10.6:1 | 11.5:1 |
| Cooling System: | Liquid cooled | Liquid cooled |
| Induction: | Weber I.A.W. CPU P7 electronic fuel injection. 2 x 50mm throttle bodies | Dell'Orto PVHA 17.5 carburetor |
| Ignition: | Inductive magnetically triggered | Electronic CDI |
| Starting: | Electric | Kick |
| Clutch: | Dry,multiplate | Wet, multi plate |
| Transmission: | 6 Speed | 6 speed |
| Primary Drive Ratio: | 2:1 (31/62) | 21/87 |
| Gear Ratios: | Strada: 1st 2.466 / 2nd 1.765 / 3rd 1.350 / 4th 1.091 / 5th 0.958 / 6th 0.857:1 Kit: 1st 2.466 / 2nd 1.765 / 3rd 1.400 / 4th 1.182 / 5th 1.043 / 6th 0.958:1 | 1st 11:34 / 2nd 15:30 / 3rd 18:27 / 4th 20:24 / 5th 22:23 / 6th 23:22 |
| Final Drive Ratio: | 2.6:1 (15/39) | 11/53 |
| Final Drive: | Chain | Chain |
| Frame: | Tubular steel | Steel beam |
| Front Suspension: | Marzocchi M1R upside-down fork with rebound compression damping adjustable | Hydraulic fork, Ø 40 mm |
| Rear Suspension: | Marzocchi Supermono shock with preload and damping adjustable, rising rate swingarm | High strength steel swingarm, hydraulic monoshock |
| Front Brakes: | 2 x 280 mm Disc, 4 piston calipers | Single stainless steel disc, Ø 260 mm, floating caliper |
| Rear Brakes: | Single 260 mm disc, 2 piston caliper | Single disc, Ø 180 mm, floating caliper |
| Front Tyre: | Strada: 130/60 x 16 Kit: 120/60 x ZR17 | 100/80 ZR17 |
| Rear Tyre: | Strada: 160/60 x 16 Kit: 180/67 x ZR17 | 130/70 ZR17 |
| Dimensions: | Length: 2050 mm / 80.7 in Width: 700 mm / 27.6 in Height: 1130 mm / 44.5 in | Length: 2045 mm / 80.5 in Width: 835 mm / 32.5 in |
| Wheelbase: | 1460 mm / 57.5 in | 1400 mm / 55.1 in |
| Seat Height: | 760 mm / 29.9 in | 835 mm / 32.9 in |
| Dry Weight: | Strada: 185 kg / 408 lbs Kit: 165 kg / 363 lbs | 98 kg / 216 lbs |
| Fuel Capacity: | 20 L / 5.3 US gal / 4.4 Imp gal | 7 Litres / 1.85 US gal |