The Kawasaki KX 250F is a liquid-cooled
DOHC four-valve
four-stroke
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...
single
Single may refer to:
Arts, entertainment, and media
* Single (music), a song release
Songs
* "Single" (Natasha Bedingfield song), 2004
* "Single" (New Kids on the Block and Ne-Yo song), 2008
* "Single" (William Wei song), 2016
* "Single", by ...
motocross
Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.
History
Motocross first evolved in Britain from motorcycle trials competi ...
motorcycle
A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising ...
made by
Kawasaki.
The Kawasaki KX250F was co-developed with the
Suzuki Motor Co. under their unique joint venture that started in 2002. This joint venture produced the Suzuki RMZ250 which is the mechanical twin to the KX250F but is in yellow Suzuki markings. The first year of the KX250F was 2004 and it saw immediate success in Supercross and Motocross racing capturing the East/West SX championships as well as the national MX title.
For the 2006 model year, Kawasaki took its own separate route in 250F development by releasing an all-new bike that had no ties with Suzuki. The 2006 model features an all-new aluminum perimeter frame, a heavily revised engine, new Showa front and rear shocks, and Renthal handlebars. The new KX was very competitive, ranking highly in motocross magazine shootouts as well as in competition. The 2008 KX250F has continued its reputation as a good bike, being highly regarded in all dirtbike shootouts.
In 2009, Kawasaki overhauled the KX250F with a lot more than a new look. These include numerous engine enhancements to increase power and save weight, upgrades to the suspension, including a titanium coating to reduce friction, and a few chassis changes which help improve cornering and create an overall slimmer feel.
In 2011, Kawasaki added two new major features. The first was a digital
fuel injection
Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines.
All comp ...
(DFI) system. This system was similar to the one found on the more powerful KX450F. It greatly improved engine response time and reduced hesitation when landing after a jump. The second addition was Showa's separate function fork (SFF). These new forks lowered weight, improved performance, and allowed for easier adjustability. In 2012, a second fuel injector was added increasing horsepower over the 2011 model.
Kawasaki once again revamped the KX250F in 2013. They created a new look along with enhancements to the fuel injection system and separate function forks.
Evolution of the KX250f
Frame
2017-2018,
2015-2016,
2012-2014,
2011 unique,
2009-2010,
Engine Cases
2018 - unique,
2017 - unique,
2015-2016,
2014 - unique,
2011-2013,
2010 unique,
See also
*
Kawasaki KX450F
External links
Official site
KX250F
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