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Comparing the technical specifications of Kawasaki J 300 and Ducati Diavel is a proper way to figure out which one of these motorcycles matches better your individual preferences and expectations. You certainly have your own comfort zones in speeding, handling and sitting position and these should guide you to your choice of motorcycle. 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 the most appropriate judgement can be made when each of them is taken for a real ride.

Kawasaki-J 300   vs   Ducati-Diavel
Picture of Kawasaki - J 300Picture of Kawasaki - J 300
Kawasaki manufacturer Ducati
J 300 bike name Diavel
Scooter mootorcycle type Cruiser
2014 year Since 2011
223.5 / 77.5 / 126 cm overall size L/W/H(cm)223.5 / 86 / 119 cm
299 cc engine displacement (cc)1199 cc
Fuel injection fuel supply method Fuel injection - electronic
10.8:1 compression ratio 11.5:1
72.7:72 mm bore and stroke 106x67.9 mm
145mm (5.7 inches) ground clearance 130mm (5.1 inches)
2.1litres (2.2 quarts) engine oil capacity3.5litres (3.7 quarts)
13.0 litres (3.4 gallons) fuel tank capacity 17.0 litres (4.5 gallons)
129 km/h (80 mph) top speed250 km/h (155 mph)
28 hppeak horsepower 162 hp
29 nm (21.4 ft lbs)max torque 128 nm (94.4 ft lbs)
179 kg (395 lbs) dry weight210 kg (463 lbs)
191 kg (421 lbs) curb weight (wet weight) 239 kg (527 lbs)
37mm telescopic fork. 110mm wheel travel front suspension Marzocchi 50mm fully adhustable upside down forks
twin shocks with 5-way adjustable preload and 100mm wheel travel rear suspension Aluminium single sided swingarm. Fully adjustable Sachs monoshock.
120/80-14 front tyre size 120/70-ZR17
150/70-13 rear tyre size 240/45-ZR17
CVT with centifugal clutch transmission type 6-speed
ECU control (full transistor), electric starting ignition / starting Electronic
single 260mm petal disc and 2-piston caliper front brakes Dual 320mm semi-floating discs, Brembo callipers, ABS
one disc with 240mm diameter and 2-piston caliperrear brakes Single 265mm disc, 2-piston floating calliper, ABS
Belt drivefinal drive typeChain drive
Liquid coolingcooling typeLiquid cooling
3.70 l/100km (63.6 mpg)fuel economy (consumption)6.70 l/100km (35.1 mpg)
technical specifications of Kawasaki J 300see data separatelytechnical specifications of Ducati Diavel

The bigger engine size of Ducati Diavel in comparison to Kawasaki J 300 doesn't mean that it is more powerful or better performing bike. The second of the bikes has a bigger compression ratio (11.5:1) which is economically better. 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. When one of two bikes with same engine displacement has a higher compression ratio it also has a better fuel economy because the mixture of air and fuel in the combustion chamber is burning at higher pressure and with better thermal efficiency.
The bike with a better fuel economy is the Kawasaki J 300 which can travel 63.6 miles with one gallon of fuel. Ducati Diavel on the contrary can travel 35.1 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.
front and rear tires The producer of each bike specifies the sizes of its front and rear tyre. Another considerable factor here is your own riding style. To choose the right tire size firstly you need to understand the meaning of the numbers printed on the size of the tire. The width of the tire is represented by the first number. Both motorcycles have the same with of their front tires - 120 mm. The profile of the tire is revealed by the second number. How many inches is the diameter of the rim - that is what the tird number reveals. Buying motorcycle tires online can save you precious time and cash.
Kawasaki J 300 has bigger ground clearance than Ducati Diavel (145mm vs 130mm). Usually given in millimeters in the technical data sheets, the ground clearance refers to the space between ground level and underside of a motorcycle’s chassis and sometimes is called ride height. In simple terms that would be the shortest line among all the lines drawn between the surface of the road and any mechanical part of the motorcycle.
Comparing the top speed values of both motorcycles we can see that Ducati Diavel is the faster one with 250km/h. As per the technical data of Kawasaki J 300 it would be behind it on the highway with 129km/h. In some cases these speed statistics are based on bike owners reviews and may be contradictory from various sources.liquid cooling system of a motorcycleThe same method of engine cooling is used on both motorcycles - liquid cooling. The tiny variations of the operating temperatures are one of the significant advantages of the liquid cooled motorcycles. Once the operating temperature is reached (the engine is warmed up), it runs at a pretty constant temperature. The circulation of the coolant from the radiator to the engine is helped by the water pump. The amount of cooling can be regulated via thermostat, which helps holding the temperature at a relatively constant level. A liquid-cooled engine happens to be quieter than the air-cooled one because all that liquid that surrounds the engine deadens mechanical noise.
According to the technical specifications above these two motorcycles have different final drives.
motorcycle with chain final drive The final drive of the Ducati Diavel is chain.Most motorcycles are produced with chain drive because of its economical way to transfer power to the rear wheel and convey the biggest percentage of engine power in that process. However all chains require keeping an eye on them and proper lubrication when they get dry and cleaning when they get dirty.The Kawasaki J 300 is driven by a belt.
compression ratio is a value that represents the ratio of the volume of gas in the cylinder when the piston is at the lowest point it is ever gonna go down and the volume of gas when the piston is at its highest point. Based on the information from the technical data of the motorcycles the values are accordingly 10.8:1 for Kawasaki J 300 and 11.5:1 for Ducati Diavel. 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.
The good quality of the engine oil is an important factor in keeping the motorcycle in peak condition. Engine oils are different types as synthetic, mineral, part-synthetic and they all come at their price and qualities. The engine oil is to be changed on every 3700 miles (or 6000 kilometers) as a general rule. If you you synthetic oil then bigger mileage can be allowed between oil changes. Depending on the oil filter it needs to be replaced on each or every two oil changes. The oil capacity of Kawasaki J 300 is 2.1 litres and the engine oil of Ducati Diavel is 3.5 litres as per their technical specs. The oil capacity information is only to get an idea of how much oil roughly will be needed on oilchange. The exact amount of oil you pour in is to be judged by the current level shown on the oil level sight window or dipstick.


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