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Whether referring to engine or chassis performance, or the latest available technology, the name “Ninja” implies the very best that Kawasaki has to offer. In the case of the Ninja 300, it means a larger-displacement 296cc engine with the power and torque to eclipse everything in its class.
|Type||4-stroke Parallel Twin|
|Bore and stroke||62.0 x 49.0 mm|
|Valve system||DOHC, 8 valves|
|Fuel system||Fuel Injection: 32mm x 2 (Keihin)|
|Lubrication||Forced Lubrication, wet sump|
|Front: type||Single 290 mm petal disc|
|Front: calipers||Single balanced actuation dual-piston|
|Rear: type||Single 220mm petal disc|
|Fuel capacity||17 litres|
|Final drive||Seeled chain|
|Primary reduction ratio||3.087 (71/23)|
|Gear ratio: 1st||2.714 (38/14)|
|Gear ratio: 2nd||1.789 (34/19)|
|Gear ratio: 3rd||1.409 (31/22)|
|Gear ratio: 4th||1.160 (29/25)|
|Gear ratio: 5th||1.000 (27/27)|
|Gear ratio: 6th||.857 (24/28)|
|Final reduction ratio||3.000 (42/14)|
|Clutch||Wet multi-disc, manual|
|Wheel travel: front||120mm|
|Tire: front||110/70-17 M/C 54S|
|Wheel travel: rear||132mm|
|Tire: rear||140/70-17 M/C 66S|
|Steering angle (left/right)||35° / 35°|
|Suspension, front||37mm telescopic fork|
|Suspension, rear||Bottom-Link Uni-Trak with gas charged shock and 5-way adjustable preload|
Late-model sport bikes often use large-bore throttle bodies to generate high levels of power. However, with large diameter throttles, when a rider suddenly opens the throttle, the unrestricted torque response is anything but gentle and often more than the rider can handle. Dual throttle valve technology was designed to tame engine response while contributing to performance.
On fuel-injected models, throttle bodies generally have only one throttle valve per cylinder. On models with dual throttle valves, there are two throttle valves per cylinder: in addition to the main valves, which are physically linked to the throttle grip and controlled by the rider, a second set of valves, opened and closed by the ECU, precisely regulates intake airflow to ensure a natural, linear response. With the air passing through the throttle bodies becoming smoother, combustion efficiency in improved and power is increased.
Like other Kawasaki engine management technology, Dual Throttle Valves were designed with the philosophy of “following the rider’s intention, while providing natural-feeling support.” They are featured on many Kawasaki models.
Based on feedback from racing activities, the Assist & Slipper Clutch uses two types of cams (an assist cam and a slipper cam) to either drive the clutch hub and operating plate together or apart.
Under normal operation, the assist cam functions as a self-servo mechanism, pulling the clutch hub and operating plate together to compress the clutch plates. This allows the total clutch spring load to be reduced, resulting in a lighter clutch lever feel when operating the clutch.
When excessive engine braking occurs – as a result of quick downshifts (or an accidental downshift) – the slipper cam comes into play, forcing the clutch hub and operating plate apart. This relieves pressure on the clutch plates to reduce back-torque and help prevent the rear tyre from hopping and skidding.
Using high-precision electronic control for engine management, Kawasaki models can achieve a high level of fuel efficiency. However, fuel consumption is greatly affected by throttle use, gear selection, and other elements under the rider’s control. The Economical Riding Indicator is a function that indicates when current riding conditions are consuming a low amount of fuel. The system continuously monitors fuel consumption, regardless of vehicle speed, engine speed, throttle position and other riding conditions. When fuel consumption is low for a given speed (i.e. fuel efficiency is high), an “ECO” mark appears on the instrument panel’s LCD screen. By riding so that the “ECO” mark remains on, fuel consumption can be reduced.
While effective vehicle speed and engine speed may vary by model, paying attention to conditions that cause the “ECO” mark to appear can help riders improve their fuel efficiency – a handy way to increase cruising range. Further, keeping fuel consumption low also helps minimise negative impact on the environment.
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