All New 2017 Kawasaki KX250F
other day we posted about KTM's big news amongst its 2017 model
lineup, the all new
250 SX, well we are back again with 250 news, this time coming
from Kawasaki. After
giving the big brother, the 2016 KX450F
all the love last year, this time it's all about the new all new
2017 Kawasaki KX250F. An all new machine from tip to tail, the 2017
KX250F is everything hard core mx racers want in a dirt bike to be:
lighter, narrower, and outfitted with more power.
Here's all the specifics directly from Kawasaki:
The Kawasaki KX250F is the single-most dominant motocross bike of the last decade. To keep riders on the podium, Kawasaki introduces an all-new KX250F for 2017, in line with the updates of the KXâ¢450F motorcycle last year. The 2017 model offers a more powerful engine, a significantly lighter chassis, and slimmer ergonomics, making this new model the fastest KX250F motorcycle yet.
The 2017 Kawasaki KX250F:
- Lighter weight (229.9 pounds)
- New more powerful and lighter engine
- New redesigned more narrow and lighter weight frame
- Improved clutch and shift feeling
- New flatter seat and a new lower/flatter tank, for improved
handling and ergonomics
This year's KX250F is built with race-winning components to keep Kawasaki riders in that top spot at the race track. From the showroom to the racetrack, the performance of Kawasaki's KX family of motorcycles is proof of its engineering pedigree. It truly is the bike that builds champions.
- New redesigned engine with offset cylinder layout, for more
- Lighter bridged-box bottom piston, designed from racing
- Downdraft-style intake layout with new injector angle designed
for optimum fuel atomization
- New downstream injector with twice as many holes, finer fuel
droplets and wider angle, resulting in stronger low-to-mid power
and sharp response
- New and improved combustion chamber configuration
- New 43mm throttle body
Tuned to best
suit race-experienced riders, the 249cc liquid-cooled, 4-stroke
single's wide power-band focuses on high-rpm performance that
extends way into the over-rev. Highly acclaimed for its high output
and smooth power delivery, the 2017 model KX250F has race-inspired
tuning and parts like the high-performance bridged-box bottom
piston and down draft-style intake routing. Mechanical friction is
reduced thanks to things like an offset cylinder-with increased
forward lean angle-and plateau honing, resulting in a stronger low
end as well as an increase in maximum peak power. The connecting
rod now features a journal bearing in lieu of a needle bearing and
items like the camshaft sprockets and chain have been revised along
with a newly revised exhaust camshaft, all factors resulting in
more efficient power.
The KX250F dual-injector fuel injection system is a key component to its performance; introduced in 2012, it was the world's first to be featured on a production motocross bike. Unlike a standard digital fuel injection that uses one injector downstream of the throttle valve, the KX250F system uses a second, upstream injector located close to the airbox. The downstream injector-redesigned for 2017-is used to help ensure smooth, instant response featuring a finer atomization with more holes in the injector itself. The downstream injector creates that stronger low-to-mid range power and quick throttle response, while the upstream injector is charged with providing power.
As rpm and throttle position increase, primary operation switches from the downstream injector to the upstream injector, depending on whether in a low (1st, 2nd) or high (3rd, 4th, 5th) gear, the transition is gradual or almost instantaneous. The upstream injector's greater distance from the combustion chamber gives the fuel particles and intake air more time to mix, as well as allowing the mixture to cool before entering the combustion chamber, both of which contribute to more efficient filling, and ultimately more power.
The 2017 model also features revised ECU settings, along with a new exhaust system. The exhaust header pipe is skinnier and shorter, resulting in improved performance.
- Lightweight ECU, with revised settings
- Three engine maps (standard, hard, soft) contained in the
- Optional KX FI Calibration Kit (Handheld) requires no tools,
laptop or battery
The lightweight ECU of the KX250F motorcycle was designed
specifically to withstand the rigors of motocross racing, while
still providing a wide variety of tuning. The Kawasaki KX250F
provides three engine maps that come pre-loaded into the
motorcycle's ECU that are easily accessible through the DFIÂ®
coupling plug. These three color-coded couplers are designed to
tune for hard, medium or soft track surfaces, and allow riders to
find the perfect power delivery for a particular terrain.
Using the optional KX FI Calibration Kit (Handheld), sold separately as a Kawasaki Genuine Accessory, a rider can store and select from up to seven separate engine maps. The kit includes a portable handheld calibration tool, which enables riders to make changes to the engine maps without the need of a PC, laptop or battery, making it easy to tune at the track. It plugs in thanks to an additional harness not included in the kit.
FRAME & SUSPENSION
- New Swingarm design with improved linkage ratio
- Lighter weight and more rigid frame design
- 6mm narrower frame design
- Showa 48mm Separate Function Front Forks (SFF Type
for the KX250F start at the frame, with a newly redesigned, lighter
aluminum perimeter with a new front downtube and 3mm narrower main
beams, for an overall reduction width of 6 mm. The frame rigidity
has been optimized to obtain improved front end feel.
Up front you'll find Showa 48mm Separate Function Front Forks (SFF Type 2) with works-style internal construction that locates its damping assembly in the left fork tube and a spring in the right. The Separate Function Front Fork construction contributes to a planted feel at the front, superb damping performance and ride comfort with greater bottoming resistance. It also has excellent stability when on the brakes or when landing jumps. For 2017, revised settings contribute to greater stability over braking bumps and through corners.
The Uni-TrakÂ® rear suspension with Showa shock now features revised valve settings and linkage ratios, contributing to improved ride feel and traction and increased rear-end feedback. A lighter shock spring this year means a weight savings, and the lower rate contributes to the reduced pitching effect over braking bumps. The rear shock linkage mounts are below the swingarm to maximize wheel travel and the new linkage geometry increases cornering stability. Dual compression with high and low speed adjustability offers a wide range of tuning options. Self-lubricating alumite coating on the inner shock body improves wear resistance and shock action.
STYLING & ERGONOMICS
- Easier for the rider to change position while riding
- Integrated bodywork for seamless rider interface
- Aggressive KX body work and in-mold graphics
The all-new minimalist bodywork includes slimmer shrouds,
thanks to the revised radiators and their new orientation. The
KX250F now features a new flatter and larger capacity fuel tank,
along with a new flatter seat with reinforcing ribs. The
combination of the new tank and seat aid in a more seamless design,
which also makes it easy for riders to move around on top of the
Aggressive all-new bodywork, which includes front and rear fenders, number plate and fork guards, makes the bike look more compact and is complemented by factory-style design and Kawasaki's first in-mold graphics on the radiator shrouds. Black Excel rims, black fork guards, and green highlights help create a distinctive Kawasaki identity.
Returning this year are ERGO-FITâ¢ adjustable handlebars and footpegs to better suit riding styles and different rider statures. The handlebars have four position options and the footpegs have two placements available.
For pro riders and amateur riders alike, the KX Launch Control is a
major advantage in getting out of the starting gate straight and
fast. Launch Control Mode has the greatest effect within the first
few seconds of releasing the clutch off the start.
The KX250F features a Launch Control system that, with the simple press of a button, allows riders to activate a separate engine map designed to assist starting in certain conditions. The Launch Control Mode map retards ignition timing, allowing tires to gain grip in low-traction situations, and allowing riders to focus on their lines. Launch Control remains active through first and second gear, until the rider shifts into third gear, and then it returns to normal engine timing.
Even for top-level riders, controlling the hard-hitting power of a KX250F motocrosser off the start requires a high degree of throttle control and clutch finesse. By optimizing this power, Launch Control Mode helps riders maximize traction, increasing the chance of getting a good start.
Contributing to the racing components found throughout
the KX250F are the brakes, with 270mm petal-style disc brakes in
the front. These brakes deliver strong braking force and superb
control. The petal style discs contribute to both sporty looks and
a high-quality appearance. Rear caliper guard protects the caliper
Engine: 4-stroke, 1-cylinder, DOHC, water-cooled
- Displacement: 249cc
- Bore x Stroke: 77.0 x 53.6mm
- Compression ratio: 13.7:1
- Fuel System: DFIÂ® w/43mm Keihin throttle body and dual
- Ignition: Digital DC-CDI
- Transmission: 5-speed, return shift
- Final Drive: Chain
- Front Suspension/Wheel Travel: 48mm inverted Showa SFF
telescopic fork with 40-way spring preload adjustability and
22-position compression and 20-position rebound damping
- Rear Suspension/Wheel Travel: Uni-TrakÂ® linkage system and
Showa shock with 19-position low-speed and 4-turns high-speed
compression damping, 22-position rebound damping, fully adjustable
spring preload/12.2 in
- Front Tire: 80/100-21
- Rear Tire: 100/90-19
- Front Brakes: Single semi-floating 270mm Braking petal disc
with dual-piston caliper
- Rear Brakes: Single 240mm Braking petal disc with single-piston
- Frame Type: Aluminum perimeter
- Rake/Trail: 28.5Â°/5.0 in
- Overall Length: 85.4 in
- Overall Width: 32.3 in
- Overall Height: 49.8 in
- Ground Clearance: 12.6 in
- Seat Height: 37.0 in
- Curb Weight: 229.9 lb**
- Fuel Capacity: 1.69 gal
- Wheelbase: 58.1 in
- Color Choices: Lime Green
- MSRP: $7,749