Ducati 851SP (1989)

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The Ducati 851 SP is a motorcycle manufactured in 1989, built with a four-stroke engine and a 90-degree, L-twin cylinder, desmodromic 4 valves per cylinder. It has a capacity of 851 cc and a bore x stroke measurement of 92 x 64 mm with a compression ratio of 11.5:1. The bike is liquid-cooled and has Weber I.A.W. CPU P7 electronic fuel injection with a 2 x 50 mm throttle body. The ignition system is inductive magnetically triggered and has a Champion A59GC spark plug. The 851 SP has a max power of 89.7 kW / 122 hp at 10000rpm, and a dry weight of 188 kg / 414 lbs with a fuel capacity of 20 litres/5.3 US gal/4.4 Imp gal. It has a top speed of 250 km/h / 155 mph, and the frame comes in white or bronze, with a red color option. The bike has a Marzocchi M1R upside-down fork and an Åhlins single shock with rebound compression damping adjustable suspension system. The front brake has a 2 x 320mm disc, with 4 piston calipers and the rear brake a single 245 mm disc, with 2 piston calipers. The primary drive ratio is 2:1 (31/62), and the final drive ratio is 2.6:1 (15/39), with a chain final drive. The bike has a length of 2000 mm / 78.7 in, a width of 670 mm / 26.4 in, a height of 1120 mm / 44.1 in, a wheelbase of 1430 mm / 56.3 in, and a seat height of 760 mm / 29.9 in. Overall, the Ducati 851 SP is a powerful, fast, and stylish motorcycle with advanced technology features.

Technical specifications:

Make Model: Ducati 851 SP

Year: 1989


Engine: Four stroke, 90 degrees L twin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven
Capacity: 851 cc / 51.9 cu in
Bore x Stroke: 92 x 64 mm
Compression Ratio: 11.5:1
Cooling System: Liquid cooled
Induction: Weber I.A.W. CPU P7 electronic fuel injection. 2 x 50mm throttle bodies
Spark Plugs: Champion A59GC
Ignition: Inductive magnetically triggered
Battery: 12V 16Ah
Starting: Electric
Max Power: 89.7 kW / 122 hp @ 10000rpm
Clutch: Dry,multiplate
Transmission: 6 Speed
Primary Drive Ratio: 2:1 (31/62)
Gear Ratios: 1st 2.466 / 2nd 1.765 / 3rd 1.400 / 4th 1.182 / 5th 1.043 / 6th 0.958:1

Final Drive Ratio: 2.6:1 (15/39)
Final Drive: Chain
Frame: Tubular steel
Front Suspension: Marzocchi M1R upside-down fork with rebound compression damping adjustable
Rear Suspension: ~Ahlins single shock with preload and damping adjust
Front Brakes: 2 x 320 mm Disc, 4 piston calipers
Rear Brakes: Single 245 mm disc, 2 piston caliper
Front Tyre: 120/70 x 17
Rear Tyre: 180/55 x 17
Dimensions: Length: 2000 mm / 78.7 in Width: 670 mm / 26.4 in Height: 1120 mm / 44.1 in
Wheelbase: 1430 mm / 56.3 in
Seat Height: 760 mm / 29.9 in
Dry Weight: 188 kg / 414 lbs
Fuel Capacity: 20 Litres / 5.3 US gal / 4.4 Imp gal
Top Speed: 250 km/h / 155 mph
Colours: White frame or bronze frame, red

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