Rumours of the two-stroke’s demise have been greatly exaggerated, we’re
pleased to say. Yamaha’s YZ250 is still winning races, and that’s a good
thing for riders who crave spine tingling performance honed from 40 years of
title-winning development.
With its patented YPVS power valve system,
YZ250 offers immediate off-idle power delivery, a smooth midrange and strong
top-end with plenty of over rev.
State-of-the-art KYB speed sensitive suspension mates with a lightweight
aluminium frame and all the good oil such as titanium footpegs and ProTaper
aluminium bars to produce a ready-to-rip MX bike that’s inexpensive to
maintain.
Yamaha two-strokes – not going anywhere soon. Apart from the podium that
is.
Features:
249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and packs an incredibly wide, hard-hitting powerband.
|
Patented YPVS power-valve system combines crisp bottom-end acceleration with strong midrange and eye-opening top-end.
|
YZ250F-style front-brake caliper and wave type front and rear discs minimise unsprung weight and provide excellent stopping power.
|
Large-capacity radiator features a ten-row core and four louvres for maximum cooling efficiency.
|
Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent rider ergonomics.
|
A carefully engineered, advanced aluminium frame and swingarm give the YZ250 excellent handling.
|
| Special-design carbon fibre reed-valve petals improve throttle response and engine performance across the entire rpm range. |
| Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch. |
| Primary kickstarter ensures smooth, easy starting action and reduced weight. |
| 38mm KeihinŽ PWK carburettor with power jet and throttle position sensor (TPS) ensures a precise fuel/air mix and crisp throttle response. |
| Digital CDI ignition system delivers precise spark for faster, stronger response. |
| Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability. |
| The KYB 48mm forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride. |
| Lightweight, removable aluminium rear subframe constructed of square-section tubing. |
| Rear, fully adjustable KYB shock features a super-light titanium shock spring and reduced-friction Kashima coating of internals. 315mm of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort all add up to fantastic rear wheel control and a sweet ride. |
| Lightweight 21-inch front and 19-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance and handling. |
| Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes. |
| Premium Dunlop knobbies offer race-spec traction and wear. |
| Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip, and ground clearance. |
| Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refuelling. |
Specifications:
Engine
|
Engine
Type |
Liquid-cooled,
2-stroke,
reed-valve |
|
Displacement |
249.0
cc |
|
Bore
x
Stroke |
66.4
x 72
mm |
|
Compression
Ratio |
8.9
~
10.6
: 1 |
|
Lubrication
System |
Premix |
|
Fuel
Management |
PWK38S |
|
Ignition |
CDI |
|
Starter
System |
Kick |
|
Fuel
Tank
Capacity |
8.0
L |
|
Oil
Capacity |
0.8
L |
|
Final
Transmission |
Chain |
|
Transmission |
5-speed |
Dimensions
|
Length |
2178
mm |
|
Width |
827
mm |
|
Height |
1306
mm |
|
Seat
Height |
994
mm |
|
Wheelbase |
1481
mm |
|
Ground
Clearance |
382
mm |
|
Wet
Weight |
103.9
kg
with
8.0
litres
of
fuel |
Chassis
|
Frame
Type |
Semi
double
cradle |
|
Suspension
Front |
Telescopic
fork |
|
Suspension
Rear |
Swingarm |
|
Brakes
Front |
Single
disc |
|
Brakes
Rear |
Single
disc |
|
Tyres
Front |
80/100-21
51M |
|
Tyres
Rear |
110/90-19
62M |
