Ducati 851 SP Biposto (1990 - 92)

The Ducati 851 SP Biposto: a motorcycle that embodies the perfect blend of style and substance. Its 90-degree twin-cylinder engine, with desmodromic valves and DOHC, delivers a unique riding experience that’s as engaging as it is exhilarating.

With a top-end power output of 95bhp at 9000rpm, this Italian thoroughbred is capable of accelerating with ease from low speeds to the redline. But it’s not just about brute force; the engine management system has been fine-tuned to provide an extra five bhp over its predecessor, making it a joy to ride through the mid-range and beyond.

As you rev up the engine, the powerband kicks in above 7000rpm, unleashing a surge of energy that’s hard to resist. The gearbox is smooth and responsive, allowing you to exploit the engine’s full potential with ease. Whether you’re carving up twisties or cruising down straightaways, the Ducati 851 SP Biposto is an absolute thrill ride. It’s a motorcycle that will leave you grinning from ear to ear, begging for more.

Key Specifications

Engine Type	Four stroke, 90Ltwin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven
Engine Capacity	851 cc / 51.9 cu in
Max Power	80.9 kw / 110 hp
Fuel Tank Capacity	5.3 US gallons / 20.0 L
Weight (Wet/Kerb)	462 lbs / 210 kg
Seat Height	29.9 inches / 760 mm

*n/a – information not provided by manufacturer

All Specifications

Make & Model

Model	Ducati 851 SP Biposto
Year	1990 – 92

Engine

Engine Type	Four stroke, 90Ltwin cylinder, DOHC, desmodromic 4 valves per cylinder, belt driven
Displacement	851 cc / 51.9 cu in
Bore x Stroke	92 x 64 mm
Compression Ratio	10.5:1
Max Horsepower	80.9 kw / 110 hp
Engine Management System	Weber I.A.W. CPU P7 electronic fuel injection. 2 x 50mm throttle bodies
Cooling System	Liquid cooled

Performance

Top Speed

n/a

*n/a – information not provided by manufacturer

Transmission

Clutch	Dry,multiplate
Gearbox	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	Chain

Electrical & Electronics System

Battery	12V 16Ah
Starter	Electric

Chassis & Suspension

Frame Type	Tubular steel
Front Suspension	41 mm Showaupside-down fork with rebound compression damping adjustable
Rear Suspension	Showa single shock with preload and damping adjust
Rake	24o
Trail	94 mm / 3.7 in

Wheels & Brakes

Front Tire Size	120/60 x 17
Rear Tire Size	180/55 x 17
Front Brakes	2 x 320 mm Disc, 4 piston calipers
Rear Brakes	Single 245 mm disc, 2 piston caliper

Dimension & Weights

Overall Length	2000 mm / 78.7 in
Overall Width	670 mm / 26.4 in
Overall Height	1120 mm / 44.1 in
Seat Height	29.9 inches / 760 mm
Wheelbase	56.3 inches / 1430 mm
Fuel Tank Capacity	5.3 US gallons / 20.0 L
Wet (kerb/curb) Weight	462 lbs / 210 kg
Dry Weight	199 kg / 439 lbs

Features

Four stroke engine
90L twin cylinder engine
DOHC (dual overhead camshafts)
Desmodromic valve actuation
4 valves per cylinder
Belt driven system
Improved midrange power
Increased valve diameters (33mm inlet, 29mm exhaust)
Adjusted Weber engine management system
Maximum power output of 95bhp at 9000rpm
Power at the crank: 110bhp
Heavyweight rumble through pegs, bars, and saddle
Improved gearbox
Repositioned engine management sensors
Waterpipe re-routing
Adjustable foot-pegs on bendable hangers
41mm Showa forks with a rake angle of 24 degrees
Ducati’s desmodromic valve system

*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com