not work on the 05-up KX250 Two Stroke.
Raise the motorcycle with a bike stand, milk crate, etc., so the rear wheel
is at least 2 inches off the ground. Remove the two 19mm nuts
that hold the “H” link to the rocker and the engine cradle and push the
bolts out. (The lower chain roller needs to be remove from the frame
on the KX250 to get access to the front mounting bolt nut. The
chain roller on the four strokes also needs to be removed from the mounting
bolt as it will not clear the
pin when left on the end of the bolt.) Remove the front mounting
bolt first on all models to allow the rocker to move with the swingarm
so the head of the rear mounting bolt will clear the chain buffer. **If
you have the Promoto Billet side stand, it must be removed before
the front bolt on the four strokes can be removed.
The new links come with the bearings and seals, so install the center sleeve
and the two step washers (flat side out) from your OEM link into the new
link and install it on the bike by pushing the mounting bolts in from the
left side, rear bolt first. **Front mounting bolt on the KX250 two stroke
comes in from the right side. Install the outer washer/nut and torque
to 38 lb-ft.
When installing the KoubaLink, be sure the 90 degree grease fitting is
facing down. *Left link engraving will be upside down and backwards.
For the best performance, set the race sag (amount of vertical movement
of the rear axle FROM no weight to bike weight plus rider weight) at 3.5"
with rider in full riding gear, standing on the pegs. Then slide the fork
tubes up until they barely clear the bottom of the stock bars. ** Do not
over tighten the triple clamp pinch bolts. (14 ft- lbs. on the lower
bolts, 17 ft-lbs on the upper bolts) If the links are for lowering
purposes ONLY, sag can be set at 100mm/ 3.90", and will lower the rear
of the KX250 1.375" and 1.25"on the KXF-250 and RMZ-250F. The easiest way
we have found to adjust the rear spring preload is to use a long punch
to loosen the top preload/jam nut from the right side and grasp the spring
at the bottom and turn the spring and the preload nut at the same time.
**May have to put some lube on the shock threads to allow the nut to turn
freely. Turning the spring/nut "clockwise" increases the preload
and decreases the sag. Do not forget to tighten the jam nut with
the punch after setting the sag.
The front forks can be slid up in the triple clamps approx. .375 inches
until they contact the handlebars. For additional lowering of the front,
the bars can be spaced up by installing a washer of 1/4" max thickness
on top of the flanged washer above the top rubber handle bar mount on both
sides. This will allow the the forks to be slide up farther but is not
recommended unless you require quicker stearing. Disclaimer: Lowering
the rear more than the front can change the geometry and could affect the
handling, so be careful out there.
you like what the KoubaLink does for your suspension, please tell everyone,
if you do not, please tell us. We can be contacted at our email address
below and are always interested in your questions or comments.