2011 Kawasaki KX 250F

6 Фев 2015 | Author: | Комментарии к записи 2011 Kawasaki KX 250F отключены
Kawasaki KX 100

2011 Kawasaki KX 250F

Kawasaki KX 250F

— Kawasaki KX 250F

2011 KX 250F

More AMA Lites than any Motorcycle in History!

an old refrain: The factory guys get all the stuff. Their bikes are lighter and just plain than the motocrossers you can buy off the showroom There-s some truth But that-s changing. The gap between and factory-prepped motocrossers has never narrower.

And with the introduction of massively reworked 2011 that gap just shrank a more.

All told, there are 30 upgrades to the new KX250F, all of which the stunning level of testing and happening behind the scenes at RD and race teams. And Kawasaki this for one reason: To put you on the fiercest, capable motocrosser in the industry.

reworking the new KX250F, engineers with what-s arguably the gold standard in 250-class — the 2010 KX250F. ask Christophe Pourcel and Jake who won the 2010 AMA East and West titles, respectively, on their Energy-/ Pro Circuit / Kawasaki-backed Or the long list of enthusiast shootouts that picked the KX250F as the best motocrosser in its

For 2011, the goal was an even and more ridable KX250F. On the powerful side of the equation are of engine modifications, all of which made the latest KX an absolute screamer. The big news is the addition of Fuel Injection (DFI®) not only helps produce — and more useable power, but also makes a much easier proposition.

The basically identical to the one fitted to the KX450F, automatically adjusts to track and climate conditions, and consistent fuel metering and even when the going rough, such as when off jumps or slamming through the The simple and highly efficient DFI incorporates a compact and lightweight Control Unit (ECU), a throttle body, a lightweight fuel pump and an ultra-fine injector.

Set at a 45-degree angle for mid-range power, the injector metered fuel directly the intake tract for smooth delivery and highly accurate response throughout the entire rpm The 250F-s injector actually more fuel than the unit due to the 250F engine-s speeds, while airflow the system is actually higher through the 2010 model-s setup.

Designed specifically for the KX250F-s lightweight DFI system no battery; the engine can be started three rotations of the crankshaft only the electricity generated the initial … of the kickstarter. more, an optional ECU Setting allows racers to select several different ECU data or fine tune a custom map alters fuel injection and timing to suit different and conditions. The tool can also be as a data logger, recording up to six of data, including engine degree of throttle opening, and air temperatures, ignition timing, adjustments, gear position and voltage.

You-ll find more changes farther downstream, as higher compression — now vs. 13.2:1 — via a modified and changes to the top of the exclusive Bridged-Box piston. The intake camshaft now higher valve lift, the intake valve spring is to handle the extra load.

The rotational inertia has been modified to better match the new characteristics, while a slightly spark plug design and a new coil offering a hotter and spark — improves performance. Transmission and final-drive have been altered to match the engine-s newfound and a modified shifting mechanism you to access those speeds easily and smoothly. There-s 10% air-cleaner duct volume for breathing, and on the exhaust side, a head pipe gives the a touch more low-end while a higher-volume muffler lowers noise to comply the 94 db AMA Pro Racing limit, while optimum power production up

The chassis has been massaged bit as thoroughly as the engine, with new Separate Function Fork leading the list of changes. a conventional fork design, each fork leg handles springing and damping, the SFF separates and damping functions for improved 25 percent less friction, weight and easier adjustability.

The leg accommodates the spring side of the incorporating a larger main assembly than traditional plus a small amount of oil for Spring preload is now adjustable via a adjuster on the right leg-s The left leg handles damping with only its cartridge assembly and fork oil inside the Rebound and compression damping are on the fork tube.

In addition to the reduction in friction provided by the SFF the KX250F-s inner fork are titanium nitride coated to friction. Lower friction and overall fork action are to the new fork-s performance, and they are you-ll appreciate the first you charge into a bump-infested at speed. Fork offset has been reduced by a full for lighter handling and quicker response.

Out back, the rear incorporates revised damping that more closely the SFF-s performance. The result is more wheel and chassis while ripping across a set of or shrieking through that rutted corner leading the front straight. Like the the new 250F gets a reworked with grippier material the sides for improved rider while standing when the gets hot and heavy.

The rest of the includes the same top-tier that have put the KX250F the podium for years. The KX250F-s perimeter frame, with its blend of forged, extruded and parts, has the chassis balance, and durability experienced riders and need, and locates the engine, and pivot points where perform best.

Designed with rider foremost in mind, the KX250F-s offers riders a slim and a natural positioning that going fast a simple The sleek bodywork components one-piece plastic shrouds and number plates. The upgraded provides excellent seated and rider mobility, and features urethane foam to hold its longer.

Chassis protection include the large, resin plate, rear caliper and a redesigned chain guide approximately 2.5 times more than the 2010 unit.

The 249cc, liquid-cooled, four-… is a veritable powerhouse, and features an cylinder treatment on the cylinder a crankshaft balance factor of 60 percent (on par with Pourcel and factory racebikes), for reduced and smoother power delivery, a durable — yet slick-shifting transmission, stronger-than-ever crankcases and a of reliability that-ll keep you out and on-track all season long. been rated the best in its class by various magazine and you-ll understand their after your very ride.

The rest of the KX250F is every bit as impressive as the engine and Aside from the sort of fit and you expect from Kawasaki, also a premium-quality Renthal handlebar included standard, alumite-coated aluminum wheels are both light and strong, a rear hub and butted spokes further reduce unsprung and factory-style graphics that things off nicely and highlight the amazing on-track abilities.

who ride their KX250F at events are eligible to receive from Team Green, amateur racing support Each year, Team provides regional support and highly trained technicians at than 100 events throughout the States, offering technical and assistance to those who race products. Kawasaki also a comprehensive contingency program for and professional riders who place at designated events.

Kawasaki KX model Highlights


At a Glance.

— New Digital Injection (DFI) system

New Showa Separate Function (SFF) divides spring and functions; springing in the right leg and in left provide less better performance and easier

— Increased engine via higher compression and exhaust/intake

— High-performance piston Bridged Box-bottom design

Stainless steel exhaust longer header section and muffler

— Revised settings front and rear at race-experienced riders

Higher High-revving Engine

— liquid-cooled, four-…, four-valve, DOHC engine delivers power across the rpm range

Modified intake valve and cam profile for increased valve improves high-rpm power

— Intake valve tension increased to control radical cam timing

— Fuel Injection (DFI) allows consistent fuel quick starts and easy

— Engine tuned to the widest possible torque to maximize traction through a percentage of the rev range

— riders able to harness performance that extends way the over-rev

— Sprocket-style drive roller helps the effect of driveline lash and braking for smoother and faster entries

— Crank web features a balance factor on par the factory racers for reduced vibration, smoother power and increased performance in the mid-high rpm

Digital Fuel Injection System

— Same system that-s fitted to the

— 43mm throttle assembly with 20 percent injector than the KX450F-s

— Intake airflow is than on carburetor-equipped 2010

— Progressive throttle opens more quickly 3/8 open position

— and efficient system: No battery, or relays

— Improves response across entire rpm

— Offers easy starting

— Prevents hesitation after landing jumps and other high-impact

— Optional Calibration Kit easy tunability

— FI Indicator Light allows the DFI to communicate diagnostic information

Box-bottom Piston

— and strong piston shares design as the factory racers, a revised crown for higher Also features fully internal bracing

— piston pin reduces reciprocating

Lightweight and Efficient Top End

— highly rigid, titanium intake and 25mm exhaust reduce reciprocating weight and high-rpm reliability

— valves have extremely valve stems on par with found in supersport machines; valves feature thick for increased strength

— ports designed for peak at all rpm, especially in the high-rpm

— Special coating to intake port cores casting gives the intake extremely smooth surfaces and intake efficiency across the rev

— Silicon-coated head provides excellent sealing

Durability and Reliability

— treatment on cylinder bore surface oil retention, while the coating on the cylinder bore helps resist scorching, contributing to durability

— big-end bearing features a copper plate on its cage and a crank pin for increased reliability

Oil pump rotors offer a degree of reliability and durability; a feed pump rotor oil flow, while a smaller rotor reduces mechanical

New Stainless Steel Exhaust

— Stainless steel offers extra durability

— Longer header section for improved low and mid-range

— Higher-volume muffler quiets emissions to 94 dB noise while retaining power

— Joint between and muffler offers excellent while a rubber damper on the rear silencer mount serious durability

Efficient System

— Thick and radiators are strong and offer resistance to mud buildup while superb cooling performance

Cylinder head water routes coolant to the front of the head for even cooling

and Shifting Reliability

— and fourth input gears large dogs to help wear

— Revised and lever angle for more shifting

— Revised ratios for second and fourth better match new engine delivery

— New 50-tooth sprocket helps capitalize on the torque delivery

— beefy crankcases feature material around the engine to help increase long-term

— Clutch cable is integrated with the crankcase for feel at the clutch lever

Scavenge oil filter screen can be without splitting the crankcases, easier maintenance


— Utilizes a low-rigidity stem for lighter handling

The KX250F-s slim and lightweight perimeter frame is composed of extruded and cast parts

Center of gravity and key dimensions as swingarm pivot, output and rear axle locations to increase forward drive minimal rear-end squat

Upper engine mounts on cover sides increase rigidity

Race-oriented Suspension

Revised race-oriented suspension settings optimize front/rear

— New Separate Function (SFF) separates springing and functions for less weight, performance, less friction and adjustability

— Fork now external spring preload

— Super-hard titanium on the outer surface of the inner tubes reduces friction and suspension action. The increased hardness also helps scratches and tube damage

Friction-reducing Kashima Coat on the inside of the outer fork contributes to smoother suspension

— Wrap-around fork guards provide greater for the inner tubes

— shock damping settings increased absorption performance and stability on corner entry to reduced rear-end kicking

Features Kashima Coat on the of the shock reservoir for reduced and smoother suspension action

Rear shock features compression adjustability, allowing and low-speed damping to be tuned

Superior Rear-wheel Traction

Swingarm features optimum bracing and flex characteristics for cornering performance

— swingarm uses a cast section, tapered hydroformed and forged chain adjusters

Uni-Trak® rear suspension mounts the suspension arm below the allowing more rear … and precise tuning

— Linkage ratios for the rear suspension match shock damping settings to maximum rear wheel

Kawasaki KX 100
Kawasaki KX 100

Rider Interface

— components offer the rider a interface, making it easy for to feel comfortable and go fast

Formed using a double-injection process, the two-tone shrouds a slim design

— number plates also and contribute to the slim package

Right side panel has an passageway to help cool the

— Frame is wider at the to offer better grip and near the bend below the to allow a slim riding

— Slim seat firm urethane, which its original shape longer

Seat has a slip-resistant top and side for good grip when and while standing

— wide (front-to-rear) footpegs superb grip and feel at the

— Clutch cable features a large quick making it easy for riders to play in the clutch cable on the fly

— Throttle grip has a collar that provides stability during throttle

— Lightweight short-length feature a pattern designed to excellent grip


— Black alumite-coated just like the factory

— Lightweight rims maximum strength and weight

— Thick and rigid fender

— Rear pad material offers powerful performance

— Front and petal brake discs reduce unsprung weight, and the shape helps clean the pads for more efficient performance

— Rear guard protects caliper damage

— Ribless hub and butted spokes further unsprung weight

— aluminum handlebar is standard

— Factory-style graphics the KX250F-s highly tuned

Additional Features

— front brake lever offers increased protection debris

— Newly and more durable chain utilizes a thicker wear pad for life

— Large skid plate offers protection with minimum

— Optional DFI Calibration Kit custom tuning

— chassis parts include holder for a 1 1/8-inch handlebar, 46

to 50-tooth aluminum and steel sprockets, solid petal rotors, different fork and springs and manual decompression and cable

Key Kawasaki KX 250F

Factory Tuning, FI to Keep Riders at the Front of the Pack

The base package provides an platform for race-experienced riders to win in the top classes. Design of the highly aluminum frame, suspension and settings focused on ensuring is maintained during high-speed — especially in straight — to enable experienced to ride full out.

And to deliver holeshot-winning performance a key factor that can mean the between running up front and or getting stuck mid-pack chassis geometry and the high-revving engine-s wide powerband designed to maximise rear traction. The combination is a proven with multiple AMA Supercross and Motocross Lites championships to its

To ensure the Lime Green continue to run at the front, Kawasaki made a number of engine and changes to further increase the winning potential.

More fuel-injected engine with tuning

— specs on par our factory racers

— to best suit race-experienced the 249 cc liquid-cooled, 4-… Single-s powerband focuses on high-rpm and extends way into the over-rev.

quick throttle response

superb over-rev characteristics

Tuned for high performance, the powerband extends way into the A works-base bridged-box bottom (used for the first time on a motocrosser on the 10MY KX250F) is one of many features inspired by our racers.

— NEW To ensure the engine-s demand for a high of gas in a short period is met, the injector features larger than that used on the A fine atomising injector 4 holes disperses spray with a droplet size of Fuel flow is about 20% than on the KX450F.

— NEW low-mid torque allows to corner a gear higher shifting)

— NEW KX FI Calibration Kit identical to that used by our teams

— NEW exhaust to meet stricter noise

High-speed chassis with components and tuning

— NEW Separate Function front (SFF)

— Left tube: damping assembly

Right fork tube:

Benefits include:

— only one spring, the friction between the spring(s) and fork tube(s) is greatly reduced 25% less)

— Removing the assembly from the right tube frees up space for a adjuster.

— racer suspension jobs are quicker

Kawasaki KX 100
Kawasaki KX 100
Kawasaki KX 100
Kawasaki KX 100

Interesting articles

Tagged as:

Other articles of the category "Kawasaki":

Our partners
Follow us
Contact us
Our contacts


Born in the USSR


About this site

For all questions about advertising, please contact listed on the site.

Motorcycles catalog with specifications, pictures, ratings, reviews and discusssions about Motorcycles.