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The new KX 250 has been unveiled with a full list of new features and key updates. It is the most powerful 250cc 4-stroke motocross ever designed by Kawasaki, and expectations for performance in competition are understandably high..
In Supercross and Motocross, this new KX 2 and a half will support professional riders as well as passionate amateurs to take the Kawasaki colors to the next level..
Following the feedback from the Official Kawasaki Team as well as a new way of designing their machines, the fork (but also the key modifications made to the engine and the chassis) illustrates well the seriousness that the Akashi factory carries for the competition. All Terrain.
One of the major changes to the fork is the adoption of a Kayaba assembly incorporating a new inverted fork with springs and tubes of ø 48 mm high performance. The large diameter of the tubes allows the use of large pistons which allow progressive actuation and firm damping. The springs are stiff at the front and rear to accommodate the increased horsepower of the KX 250. The upgraded fork better absorbs bumps early in the ride and is complemented by greater firmness for shock management important. This is tuned to the rear shock absorber which offers a double adjustment of the compression (fast and slow), and thus allowing a separate adjustment of the damping..
Regarding power, the main changes are changes to the cylinder head and intake. With a cylinder head with pawls (recently adopted on the Ninja ZX-10RR of Superbike), this one allows an increase of the maximum speed and to adopt more aggressive cams for an increase of power and a reduction of the masses. The new generation KX 250 benefits from an increase in maximum power of 2.4 kW (3.3 hp) and performance focused on high revs. These are easily noticeable from 10,000 rpm, they give the riders an advantage in the straights and allow them to more easily chain turns, and therefore improve their lap times..
In addition, a revised version of the airbox features a shorter tapered intake (120mm> 70mm), which helps to increase performance at high revs. Another innovative feature of the KX 250 is the dual injector, a feature that has been around since 2012, using an injector downstream of the throttle (where the injectors are based on standard FI systems). Then the largest diameter of the throttle body (ø43 mm >> ø44mm) passes an increased volume of air, which helps increase performance at high revs, while the repositioning of the intake duct allows an even smoother approach to the intake air. Finally, the angle of the air intake tunnel is changed from 29.5 to 32.5 °, which improves the efficiency of cylinder filling and helps to increase engine power..
These remarkable features, coupled with a host of additional new features, combine to create the most powerful production KX 250 yet and a prime contender for the top step of the podium..
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Replaces
2019 KX 250
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The technical aspect
Kawasaki KX 250 2020
- Frame
- Frame: perimeter aluminum
- Tank: 6.4 liters
- Seat height: 948 mm
- Length: 2172 mm
- Width: 820 mm
- Height: 1269 mm
- Wheelbase: 1,480 mm
- Dry weight: 100 kg
- Weight in running order: 105.2 kg
- Train before
- Telehydraulic inverted fork Ø 48 mm, deb: 314 mm
- 1 disc Ø 270 mm, 2 piston caliper
- Front wheel:
80/100
– 21
- Transmission
- 5-speed gearbox
- Secondary chain transmission
- Rear axle
- Mono-shock absorber, deb: 310 mm
- 1 disc Ø 250 mm, 1 piston caliper
- Rear wheel:
100/90
– 19
- Motor
- Single cylinder
in line
, 4 stroke - Cooling: by water
- Injection Ø 44 mm
- 2 ACT
- 4 valves
-
249 cc
(78 x 52.2 mm) -
≈ 48
ch - Weight ratio /
power
: 2.08
kg / hp - Compression: 14.2: 1
- Crit’air:
Detached pieces
exhaust
motor
fluid
electricity
filtration
braking
chain kit
Competitors
2020 KTM 250 SX-F
2020 Honda CRF 250 R
Yamaha YZ 250 2020
Gallery
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