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To compare the technical specifications and features of Kawasaki Ninja 300 (EX 300) and Ducati Monster 821 is a good way to find out which one of these motorcycles will better match your style and requirements. When you know what specifications and features of a motorcycle will make you personally comfortable with it then your choice should be all about this criteria. If you compare the motorcycles you are interested in by analysing their technical specifications, features and pictures, the list of favourite ones could be shortened to just a few models. Then these bikes in question could be best explored on the road where handling, performance and comfort of sitting position can be best felt in action.

Kawasaki-Ninja 300 (EX 300)   vs   Ducati-Monster 821
Picture of Kawasaki - Ninja 300 (EX 300)Picture of Kawasaki - Ninja 300 (EX 300)
Kawasaki manufacturer Ducati
Ninja 300 (EX 300) bike name Monster 821
Sport bike mootorcycle type Naked
since 2012 year 2015
201.5 / 71.5 / 111 cm overall size L/W/H(cm)217 / 80 / 105 cm
296 cc engine displacement (cc)821 cc
Fuel injection fuel supply method EFI (electronic fuel injection), 53mm throttle bodies
10.6:1 compression ratio 12.8:1
62x49 mm bore and stroke 88x67.5 mm
140mm (5.5 inches) ground clearance 150mm (5.9 inches)
2.8litres (3 quarts) engine oil capacity3.4litres (3.6 quarts)
17.0 litres (4.5 gallons) fuel tank capacity 17.5 litres (4.6 gallons)
180 km/h (112 mph) top speed224 km/h (139 mph)
39 hppeak horsepower 112 hp
27 nm (19.9 ft lbs)max torque 89 nm (65.6 ft lbs)
164 kg (362 lbs) dry weight181 kg (399 lbs)
175 kg (386 lbs) curb weight (wet weight) 205 kg (452 lbs)
37mm telescopic fork, 120mm wheel travel front suspension 43mm inverted fork, 130mm wheel travel
bottom-link uni-track with gas-charged shock, 5-way adjustable preload, 132mm wheel travel rear suspension Aluminum double sided swing arm with 140mm rear wheel travel
110/70-17 front tyre size 120/70-ZR17
140/70-17 rear tyre size 180/60-ZR17
6-speed slip clutch, manual transmission type 6-speed wet multiplate clutch with control cable
CDI digital ignition / starting Electric starting, Marelli electronic ignition
single 290mm petal disc with 2-piston caliper front brakes dual 320mm semi-floating discs, four-piston Brembo calipers, radially mounted, ABS
one disc with 220mm diameter and dual-piston caliperrear brakes single 245mm disc with double piston floating caliper, ABS
Chain drivefinal drive typeChain drive
Liquid coolingcooling typeLiquid cooling
4.10 l/100km (57.4 mpg)fuel economy (consumption)6.30 l/100km (37.3 mpg)
technical specifications of Kawasaki Ninja 300 (EX 300)see data separatelytechnical specifications of Ducati Monster 821

Ducati Monster 821 has bigger engine size than Kawasaki Ninja 300 (EX 300) but this is not a direct indicator for more power or better performance. We can see that the compression ratio of the second of this bikes is 12.8:1 and is the bigger one. This represents the biggest volume of the cylinder when the piston is located at the lowest point of the stroke compared to the minimum volume of the cylinder when the piston is at the highest point of the stroke. The bigger compression ratio means that the fuel/air mixture in the combustion chamber has a greater pressure and is burnt more effectively and therefore such a bike would have better fuel economy (talking about equal engine displacement).
The bike with a better fuel economy is the Kawasaki Ninja 300 (EX 300) which can travel 57.4 miles with one gallon of fuel. Ducati Monster 821 on the contrary can travel 37.3 miles with a gallon. When measured in mpg the fuel economy shows how many miles can be traveled with a gallon of fuel. Alternatively when measure in l\100km it shows the fuel consumption in litters per 100 kilometer trip.
tire sizes The producer of each bike specifies the sizes of its front and rear tyre. The right choice also depends on your style of riding, whether you are speeding and riding agressively. To choose the right tire size firstly you need to understand the meaning of the numbers printed on the size of the tire. The first of these numbers shows how many millimeters the tire is wide. After that comes the aspect ration shown by the second number in the code. How many inches is the diameter of the rim - that is what the tird number reveals. Since many internet stores are offering motorcycle tires it is an easy way to get proper pair of tires online at reasonable price.
Ducati Monster 821 has a better ground clearance of 150mm ( for Kawasaki Ninja 300 (EX 300) it is 140mm). The distance between the chassis and the base of the tyre is called ride height or also ground clearance of a motorcycle and is usually given in millimeters in the technical specifications. That, in other words, is the smallest distance between any mechanical body part of the motorcycle and the surface of the road.
Ducati Monster 821 appears to be faster than Kawasaki Ninja 300 (EX 300) with top speed of 224km/h against 180km/h for the other bike. Those speed parameters of course may vary from different sources and in many occasions they are based on owners reviews.Liquid cooled motorcycle engineThe same method of engine cooling is used on both motorcycles - liquid cooling. Motorcycles with liquid cooling operate at narrower temperature ranges. Keeping the operating temperature at a very narrow range allows many engine components to be optimised for these temperatures. The circulation of the coolant from the radiator to the engine is helped by the water pump. A fan is turned on if needed by a thermostat to draw more air over the radiator in case the motorcycle slows down. A liquid-cooled engine happens to be quieter than the air-cooled one because all that liquid that surrounds the engine deadens mechanical noise.
motorcycle driven by chain These two motorcycles (Kawasaki Ninja 300 (EX 300) and Ducati Monster 821) have the same type of final drive which is chain. It is a fact that the majority of motorcycles around the world are driven by chains. Chains are simple and efficient way to transmit horsepower from the engine to the rear wheel. However chains have their down points - more frequent need of maintenance (lubrication and cleaning) which means that a biker should always keep an eye on the chain especially in rainy days or dusty roads.
Compression ratio - this parameter refers to how the cylinder's space changes from when the piston is down at its lowest point to when the piston is up at its highest point in the stroke. The compressio ratio of Ducati Monster 821 is 12.8:1 and it is 10.6:1 for Kawasaki Ninja 300 (EX 300) according to the motorcycles technical data above. In other words it represents how tightly the mixture of fuel and air in the combustion chamber is pressed before the ignition. Engines with higher compression ratio are more energy efficient because they are able to extract more mechanical energy from a certain amount of fuel.
Engine oil is among the most important aspects of an engines health. Synthetic engine oils are considered the most technically advanced one and are more expensive than the mineral oils which come at lower price. 3700 miles (6000 km) between oil changes is widely accepted rule. If you you synthetic oil then bigger mileage can be allowed between oil changes. The oil filter needs to be replaced too and that is usually to be done with the oil change. The oil capacity of Kawasaki Ninja 300 (EX 300) is 2.8 litres and the engine oil of Ducati Monster 821 is 3.4 litres as per their technical specs. The oil capacity here is just to give you a rough idea of how much oil you need on an oil change. Pouring exactly the proper amount of oil needed is achieved by observing the level sight window or the dipstick marks.

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