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Capitalising on its already potent package, the new fuel injected KLX250S not only gets a complete makeover, but a number of engine and chassis changes to further enable serious riding on and off the road.
Originally a road-going version of the KLX300R enduro racer, the KLX250S retained a significant amount of character and performance from its larger brother. Lightweight and compact, its 250cc liquid-cooled DOHC engine, largely based on the power plant of the 300R, had wide torqueband, pulling from down low and continuing well into the over-rev. The lightweight, high-tensile steel perimeter frame offered both great cornering performance and straight-line stability. In addition to the sharp, aggressive new styling package, the KLX250S benefits from a number of performance-enhancing changes. Lightweight high-capacity radiators offer space and weight savings, revised suspension settings and internals result in increased
stability and a more planted feel, new seat and handlebar deliver increased mobility and ease of control, and a host of other changes further increase the KLX250S's performance - both on and off the road.
To offer outstanding performance, the KLX250’s fuel injection system utilises an ultra-fine atomising (10-hole) injector. The result is a very smooth engine character, especially in the rpm range most used in day-to-day riding. From the mid-range onward, the engine revs quickly and easily. Furthermore, the fuel injection contributes to clean emissions, easier starting and improved fuel economy
The KLX250’s box- and tubular-section high-tensile steel perimeter frame creates a slim, lightweight package. The 26.5 degree caster angle and short wheelbase contribute to quick handling, while the high rigidity of the frame ensures straight-line stability. The new lightweight, highly rigid aluminium D-section swingarm contributes to reduced unsprung weight. New KX racing-type chain adjusters allow precise adjustment of chain slack, helping to minimise drivetrain power transfer loss.
The 43 mm inverted cartridge-style front fork comes with 16-way compression damping adjustment. The cartridge provides consistent damping force by minimising aeration of the fork oil. KX-style fork guards protect the inner tubes from rocks and vegetation. Uni-Trak rear suspension provides great road holding ability and bump absorption. The gas-charged shock with remote reservoir has 16-way compression and rebound damping and fully adjustable preload adjustability. An all new linkage and revised damping settings reduce some of the bike’s front-rear pitching motion, resulting in increased straight-line stability and a more planted feel in corners.
All-digital instrument console gives at-a-glance information. Features include a digital bar-graph tachometer, digital speedometer, clock, and dual trip meters. The fuel-injection lamp also doubles as a low-fuel warning lamp.
The new KLX features an all-stainless steel exhaust system. A honeycomb catalyser (located in the silencer) and secondary air system, ensure Euro-III emissions regulations are met.
Lower seat height (due to the suspension’s reduced stroke) makes it easier for riders to reach the ground with their feet, for added confidence when stopped. A revised handlebar is straighter and moves the hand position up and in. The more relaxed position makes the bike easier to ride and control. Footpegs are positioned close to the bike’s centreline for a slim riding position perfect for both on and off-road riding. A new seat shape and stiffer urethane make it easier to change seating position.
Specifications
Engine
Engine type Liquid-cooled, 4-stroke Single
Displacement 249 cm³
Bore x stroke 72.0 x 61.2 mm
Compression ratio 11.0:1
Valve/Induction system DOHC, 4 valves
Fuel system Fuel injection: φ34 mm x 1
(Keihin)
Ignition Digital CDI
Starting Electric
Lubrication Forced lubrication, wet sump
Transmission
Transmission 6-speed, return
Final Drive Chain
Primary reduction ratio 2.800 (84/30)
Gear ratios: 1st 3.000 (30/10)
Gear ratios: 2nd 2.000 (30/15)
Gear ratios: 3rd 1.500 (27/18)
Gear ratios: 4th 1.250 (25/20)
Gear ratios: 5th 1.050 (21/20)
Gear ratios: 6th 0.952 (20/21)
Final reduction ratio 3.000 (42/14)
Clutch Wet multi-disc, manual
Frame
Frame type Perimeter, high-tensile steel
Rake/Trail 26.5¢ª / 105 mm
Wheel travel, front 255 mm
Wheel travel, rear 230 mm
Tyre, front 3.00-21 51P
Tyre, rear 4.60-18 63P
Steering angle, left / right 45¢ª / 45¢ª
Suspension
Suspension, front 43 mm upside-down telescopic
fork
16-way
Suspension, rear New Uni-Trak
Compression damping: 16-way
Rebound damping: 16-way
Spring preload: Fully adjustable
Brakes
Brakes, front Single 250 mm disc
Dual-piston
Brakes, rear Single 240 mm disc
Single-piston
Dimensions
Dimensions (L x W x H) 2,200 mm x 820 mm x 1,205 mm
Wheelbase 1,430 mm
Ground Clearance 285 mm
Seat height 890 mm
Fuel capacity 7.7 litres
Curb Mass 138 kg
Performance
Maximum power 16 kW {22 PS} / 7,500 rpm
Maximum torque 20.5 N·m {2.1 kgf·m} / 7,000 rpm
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