HIGHWAY YAMAHA

        

YZ250 - Ultimate 2-stroke

2009 MX bikes turn the corner

Looking for the ultimate force in the quarter-litre two-stroke universe?

Look this way.

Yamaha’s YZ250 is the pinnacle of quarter-litre two-stroke evolution, and though some have tried to imitate the magic inside that compact liquid-cooled cylinder, there’s never been a match for that seamless surge of roll-on power, all the way through the rev range.
So when you twist the throttle, you get smooth, fast, forward movement, suitable for riders of all abilities and a broad range of applications, from closed course trail riding through to freeride.
Don’t be fooled by the low sticker price and ease of maintenance. When you choose a YZ250, you choose a highly-evolved thrill ride that has stood all the tests, one that can be either torquey or shrieking, depending on how far you twist the go tube.
And a bike that promises one thing every time you ride it –  a wide grin.

Key Features:
♦  Smaller, more compact muffler saves weight and improves handling.
♦  Adopting the ’07 YZ250F fork inner tube, a newly designed axle bracket, outer fork tube and fork tube protector shaves precious weight form the front end.
♦  Revised shock absorber damping settings improve bump compliance and tracking.
♦  Lightweight front brake master cylinder, caliper and lever for improved performance, brake feeling and reduced weight.
♦  Brand new wave-type front and rear disc rotors reduce weight and improve brake feeling.
♦  Ready to race out of the crate, complete with a Pro Taper aluminium handlebar, titanium footpegs and gripper seat.
♦  Adjustable handlebar clamps allow customisation of fit.
♦  A light, aluminium frame housing a patented YPVS™ power-valve-equipped ripper of an engine results in an awesome power-to-weight ratio.
♦  Ready to race out of the crate, complete with new ProTaper aluminum handlebar, titanium footpegs, gripper seat and Excel rims.

Main changes and features of the 2009 YZ250

1) New seat adopted
The base material of the new seat is a smooth wooly nylon base material and composite vinyl chloride leather cover with optimised chemical makeup for just the right balance of hold and ease of sliding. Also the shape of the grain of the seat cover has been changed. The result is a seat that has both the ease of slip when the rider starts to shift his/her weight and the right amount of grip when it’s necessary to hold the machine firmly. The shape of the seat surface has also been changed to reduce build-up of sand or mud in the crevices in the seams and leaves the seat cleaner after riding.

2) Gold DID chain adopted
For the drive chain a lightweight, compact and highly reliable DID (non-seal) 520DMA2 chain is adopted. For this model gold type with a high-shine plating finish has been chosen. Besides outstanding durability it also provides a quality look that adds to pride of ownership.

3) Aluminium front brake hose bracket
An aluminium bracket has been adopted for the front brake hose for further weight reduction.

4) Lightweight rims adopted front and rear
The same lightweight rims used on the YZ450F since the 2007 model are adopted front and rear. The combined weight reduction is about 150g.

SPECIFICATIONS
ENGINE/IGNITION/TRANSMISSION
Type	Liquid-cooled, 2-stroke, reed valve, forward-inclined single cylinder, with YPVS
Displacement - (cc)	249
Bore Stroke - (mm)	66.4 x 72.0
Compression	8.9 - 10.6:1
Lubrication	Premix
Fuel Management	Keihin PWK38S/1
Ignition	CDI
Starter	Kick
Fueltank - (L)	8
Oil Capacity - (L)	0.8
Transmission	Constant mesh, 5-speed
Final Transmission	Chain
CHASSIS
Frame Type	Alu semi-double cradle
Length - (mm)	2178
Width - (mm)	827
Height - (mm)	1306
Seat Height - (mm)	994
Wheelbase - (mm)	1481
Clearance - (mm)	382
Dry Weight - (kg)	104
FRONT END
Suspension Front	Telescopic forks
Tyres Front	80/100-21 51M
Brakes Front	Single disc, ø 250 mm
REAR END
Suspension Rear	Swingarm (link suspension)
Tyres Rear	110/90-19 62M
Brakes Rear	Single disc, ø 245 mm