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Specifications, pictures and owners reviews for Ducati Monster 821:
Mootorcycle type:Naked
Year:2015
Dimensions L/W/H(cm):217 / 80 / 105
Engine size (cc):821 cc displacement
Fuel supply:EFI (electronic fuel injection), 53mm throttle bodies
Compression ratio:12.8:1
Bore and Stroke:88x67.5 mm
Ground clearance:150mm (5.9 inches)
Engine oil capacity:3.4litres (3.6 quarts)
Fuel tank capacity :17.5 litres (4.6 gallons)
Top speed:224 km/h (139 mph)
Peak horse power:112 hp
Max torque:89 nm (65.6 ft lbs)
Dry weight:181 kg (399 lbs)
Wet weight:205 kg (452 lbs)
Front suspension:43mm inverted fork, 130mm wheel travel
Rear suspension:Aluminum double sided swing arm with 140mm rear wheel travel
Front tyre size:120/70-ZR17
Rear tyre size:180/60-ZR17
Transmission type:6-speed wet multiplate clutch with control cable
Ignition / starting:Electric starting, Marelli electronic ignition
Front brakes:dual 320mm semi-floating discs, four-piston Brembo calipers, radially mounted, ABS
Rear brakes:single 245mm disc with double piston floating caliper, ABS
Final drive:Chain drive
Cooling system:Liquid cooling
Fuel consumption:6.30 l/100km (37.3 mpg)
Picture of Ducati - Monster 821Monster 821

Additional notes regarding the technical specifiaction of Ducati Monster 821:
- The fuel efficiency (shown as fuel consumption above) shows how efficient is a certain motorcycle in converting the chemical energy of the fuel into kinetic energy. It is usually measured by how many liters are needed to travel 100 kilometers (L/100km) or by what distance in miles can be traveled with one gallon of fuel (mpg). It means that based on its technical specifications Ducati Monster 821 will burn a gallon of fuel on every 37.3 miles of your trip or 6.30 liters on every 100km. As we already know its fuel efficiency and fuel tank capacity we can easily calculate that if the tank is full we can ride it 172 miles till we run out of gas. However we better not try it because the gas stations are never where we desperately need them to be.
- Engine size (displacement ) of 821 cc - this is the partial volume of the combustion chamber swept by all the pistons in a single movement from bottom dead center to top dead center. In the common case the bigger the displacement volume the more powerful the engine and lesser fuel economy. The Ducati Monster 821 engine has a displacement volume of 821 cc according to the specifications above and is specified in cubic centimeters but can also be measured in liters.
- 150 mm ground clearance is the shortest distance measured from the ground to the chassis of Monster 821. The lower the ground clearance the better the handling but on the contrary higher clearance makes the bike more practical on uneven roads and off-road.Bore and stroke of Ducati Monster 821 engine
- 88x67.5 bore and stroke - bore is indeed the size of the piston presented by its diameter and stroke is the depth of the piston measured from top to bottom. The stroke value actually represents the distance that the piston undergo in one stroke. The diameter of the cylinder of Ducati Monster 821 is 88 mm and the piston stroke is 67.5 mm based on the technical specifications above. For this particular Ducati engine bore is bigger than stroke meaning that Monster 821 has a short stroke engine.
- Compression ratio 12.8:1 means that the volume of gas in the cylinder when the piston is at the bottom of its stroke refers to the volume of gas when the piston is at the top of its stroke as 12.8:1. In other words it represents how tightly the mixture of fuel and air in the combustion chamber is pressed before the ignition. With internal combustion engines the higher compression ratio allows higher efficiency because the combustion temperature is reached with less fuel.
- Chain final drive: Depending on the purpose of the motorcycle and its characteristics usually one among the three possible final drive options is preferred. On sport bikes the chain drive is preferred while most cruisers and touring bikes tend to be designed with belt or shaft drive. All three variations of final drive have been used for a very long time and each of them has proved to be successful one. The final drive of Ducati Monster 821 is chain.
motorcycle with chain final driveChain drives are by far the most popular final drive technology in the history of motorcycles and are the most economical way to drive power from the engine to the rear wheel. The down points of the chain drive are the frequent maintenance required as it needs to be regularly cleaned and oiled. Besides it is not as smooth as a shaft or belt drive.
- Liquid cooling system: both air and liquid cooling systems serve the same purpose to keep the engine in an optimal temperature range and they both have their advantages. While air cooled bikes are better cooled while in motion, the liquid cooled motorcycles have pumps, radiators and fans to deal with the heat even at idle speed.Ducati Monster 821  - installation of turn signals
- You can easily find out how to replace the Ducati Monster 821 turn signals and quickly do it yourself. Disconnecting the wires of the motorcycle turn signals is not a hassle as usually they are color coded. In the case of box connection all you have to do is clip off both ends (the male and female). After making sure that the new Ducati Monster 821 turn signals sit in the housing properly you may proceed with connecting the wires.UV and dust protection cover for Ducati Monster 821
When choosing a motorcycle cover the dimensions of the Ducati Monster 821 should be taken into consideration. Some aftermarket accessories can change the overall dimensions of the bike. A larger cover will be needed if the motorcycle has an additional backrest, sissy bar or panniers fitted.

Compare technical specifications of Ducati Monster 821 with other motorcycles:
Yamaha: Tmax 500 | V-Star 1100 Classic | Fazer FZ-1 | FJR 1300 | XJR 1300 | YZF- R125 | XVS 1300 Midnight Star | Fazer 8 (FZ8) | YZF R1 | R6 | MT-07 | YBR 125 | YZF600 Thundercat | XJ 600 | Fazer FZ6 | FJ-09 | YZF-R3 | FZ-07 (MT-07) | Smax | Zuma 125 | Zuma 50 FX | Bolt R | Vmax | MT-09 |
Honda: CBR 1000RR | CBR 600RR | CB600F Hornet | CBF 600N | XV1000V Varadero | CBF 1000 | CB 1000R | GL1800 Goldwing | ST1300 Pan European | CBR 600F | VFR 1200F | VFR 800 VTEC | XL 700V Transalp |
Suzuki: GSX1300R Hayabusa | GSX650F | GSX-R600 | GSF1250S Bandit | GSF650S Bandit | Burgman 650 | SFV650 Gladius 650 | GSX-R750 | GSX-R1000 | Burgman 400 | Inazuma 250 | DL1000 V-strom | DL650 V-strom | GSX 1250 FA | M1800R Intruder | SV 650 S | GSX 1400 | GSF 1200 S Bandit | V-Strpm 650 | GSR 750 | M800 Intruder | Boulevard M109R | DR-Z400 | RM-Z250 |
Kawasaki: ZZR1400 Ninja ZX-14 | ZX-6R | ZX-10R (ZX 1000E) | Z1000SX | GTR1400 Concours | Vulcan VN900 Classic | ER-6F | Versys 1000 | J 300 | Ninja 300 (EX 300) | Ninja 250R | Z1000 | W 800 | ER-6N | Versys 650 | Z 750 | Z 800 | ZZR 600 | KLX 125 | VN 1700 Vulcan | KLX 250 S |
BMW: S1000RR | R1200GS | F 800 ST | K1600GT | K1300S | F650GS | F800GT | R1200RT | F800GS | G650GS | F700GS | K1200R Sport | K1200GT | K1200S | K1300GT |
Harley Davidson: XL 1200S Sportster | XL 883 Sportster | FLSTF Fat Boy | Electra Glide | Softail | Dyna Super Glide FXD | Road King FLHR |
Aprilia: SL SHIVER 750 | Tuono 1000R 2002-2005 | Tuono 1000R 2006-2011 | Tuono V4R | RSV 1000 R | Dorsoduro 750 | Pegaso 650 | Pegaso Strada | RS4 125 | Caponord 1200 | RSV 1000 R | Tuono 1000 |
Ducati: Monster 796 | Diavel | Multistrada 1200S | Supersport 800 | Street Fighter S | 1199 PANIGALE | 748 | 848 | Monster 696 | Streetfighter 848 | 899 Panigale | Hyperstrada 821 | Monster 1100 | Monster 1200 |
Triumph: Sprint ST 1050 | Street Triple 675 | Tiger 1050 | Tiger 1200 Explorer | Trophy 1200 | Daytona 675 | Rocket III | Speed Triple 1050 |
KTM: 990 Adventure | 690 Duke | 990 Super Duke | 690 Enduro R |
Hyosung: GT-650 Comet | GV650 Aquila | GT125R | GV 125 Aquila | GT250R | GD250N |


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