Thomas Alva Edison: Yamaha mounted the YZ250FX electric
starter motor on the front of the engine.
Loss and gain: To remove the kickstand and its bracket, you
will need the footpeg bracket from a Yamaha YZ250F.
and swung his leg up and over the rear of the FX
only to discover that he couldn’t touch the ground with
his boots. That was strange, because we had set the
sag identically to the YZ250F that we were using for
comparison. For some reason the YZ250FX was 15mm
taller in the rear. At first we blamed it on the shock,
which we discovered was 4mm longer. When we told
Yamaha we wanted to install the shorter YZ250F shock,
they said that we couldn’t do that because, although
the FX shock was 4mm longer, it had 6mm less stroke.
Putting the shorter but longer (yes, that’s true) YZ250F
shock on could lead to the rear tire hitting the rear
fender. When looking at the YZ250FX and YZ250F side
by side, it was obvious that the FX swingarm was
angled downward more than the YZ250F swingarm, and
the seat height was higher as a result. We were about
to consult Sherlock Holmes to solve the puzzle when
Yamaha told us that because of the FX’s battery box, the
rear fender had to be moved up for tire clearance. See,
short test riders do come in handy.
As far as the shock went, it worked as well as on a
YZ250F, which is very good.
Q: WHAT DO WE HATE?
A: The hate list:
(1) Weight. Remember back in the fourth paragraph
where we said the YZ250FX is 9 pounds lighter than the
WR250F? That was misleading, because it is 18 pounds
heavier than the YZ250F. You can feel that much weight.
( 2) Front brake. What front brake? The FX weighs
more than a YZ450F. Better brakes would be a nice
( 3) Exhaust pipe. Harry Houdini couldn’t get out of
Yamaha’s wraparound exhaust pipe if his life depended
on it. Luckily, the head pipe and mid-pipe are very
good and don’t need changing. The muffler was another
( 4) Vent hose. We don’t like the way Yamaha routes
the gas vent hose. It’s an eyesore. We drill holes to
route the vent hose underneath the airbox cover and
out the front.
( 5) Battery. The 4-1/2 pound, sealed, lead-acid,
Yuasa YTZ7S battery was designed for all-around use,