| MODEL | DUCATI 851SP 1989 |
| Year | 1989 |
| Engine Type | Four stroke, 90° V-twin (L-twin), DOHC, desmodromic, 4 valves per cylinder, belt driven |
| Displacement / Capacity | 851 cc / 51.9 cu in |
| Bore X Stroke | 92 x 64 mm |
| Compression Ratio | 11.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 89.7 kW / 122 hp @ 10000 rpm |
| Max Torque | — |
| Ignition | Inductive, magnetically triggered |
| Induction | Weber I.A.W. CPU P7 electronic fuel injection, 2 x 50 mm throttle bodies |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | Dry, multiplate |
| Final Drive | Chain, ratio 2.6:1 (15/39) |
| CHASSIS SPECS | |
| Frame | Tubular steel |
| Front Suspension | Marzocchi M1R upside-down fork, rebound and compression damping adjustable |
| Rear Suspension | Öhlins single shock, preload and damping adjustable |
| Front Brakes | 2 x 320 mm disc, 4 piston calipers |
| Rear Brakes | Single 245 mm disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2000 mm / 78.7 in |
| Overall Width | 670 mm / 26.4 in |
| Overall Height | 1120 mm / 44.1 in |
| Seat Height | 760 mm / 29.9 in |
| Wheelbase | 1430 mm / 56.3 in |
| Ground Clearance | — |
| Dry Weight | 188 kg / 414 lb |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 x 17 |
| Rear Tyre | 180/55 x 17 |
| FUEL SYSTEM | |
| Fuel Capacity | 20 Litres / 5.3 US gal / 4.4 Imp gal |
| Fuel Consumption | — |
| Top Speed | 250 km/h / 155 mph |
The 851 SP was the limited Sport Production version of the 851 built for the Italian production-racing series. It kept the Strada's frame and 851 cc engine but added a higher compression ratio, a hotter state of tune and an Öhlins rear shock for about 120 hp, making it the sharpest 851 on the road at the time.
