1) Before removing the OEM
links, take a race sag measurement (amount of vertical movement of the
rear axle FROM no weight to bike weight plus rider weight) with rider in
full riding gear, standing on the pegs. The race sag recommended by Kawasaki
is 3.9 to 4.10 inches and if the same sag is used with the KoubaLinks they
will lower the rear 3/4-1 1/4 inches depending on the year model.
These longer links put more leverage on the rear spring, so bear in mind
the race sag may need to be reset after the longer Koubalinks are installed.
Our recommended race sag with the new links is 3.25 to 3.50 inches for
the best performance. With our sag recommendations, the rear will
not be lowered the full amounts, but will ride smoother on the small stuff
and have more travel remaining.
2) Raise the motorcycle
with a bike stand, milk crate, etc., so the rear wheel is just slightly
off the ground. Remove the nut (right side) from the forward link
mounting bolt and push it out the left side. *You may need to raise the
swing arm slightly so the bolt will slide out freely. Then remove
the nut off the rear link mounting bolt and push it out. Both links will
now be off and your ready to install the KoubaLinks. Some bikes have
both the link mounting bolts installed from the same side and can see no
reason they cannot be installed from either side on most year models.
3) When installing the
KoubaLinks, (engraving to the outside and readable from the right side)
the left link engraving will read backwards, as both links are identical.
Install the new links in the reverse order of the removal and torque the
link mounting bolt nuts to approx. 50 lbs-ft.
4) After the links are
installed, reset the race sag. If the links are for lowering purposes
ONLY, sag can be set at 3.90", and will lower the rear of the bike approx.
1 inch depending on the year model and axle adjustment. If the best performance
is desired we recommend a race sag setting of 3.00 to 3.50 inches,
depending on how quick the stearing is desired. * Less sag = quicker stearing
less stability. More sag = slower stearing more stability. The easiest
way we have found to adjust the rear spring preload/sag, is to use a long
punch (we use a piece of 1/4" X 12" steel keyway stock, rounded on one
end) to loosen the top jam nut from the right side, then grasp the spring
at the bottom and turn the spring and the preload nut at the same time.
Turning the spring/nut clockwise increases the preload and decreases the
sag. Do not forget to tighten the top jam nut with the punch after
setting the sag.
5) The front forks can
be slid up in the triple clamps until they almost contact the handlebars,
which is a good starting point with the lowering links. Headshake
or turns too quickly? Move them back down a little, like 1/16" at
a time until handling is acceptable. Disclaimer: Sliding the tubes
"up" farther can allow the tire to hit the fender and could lock up the
front wheel, so be careful out there.
If you like what the KoubaLinks
do 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 you questions or comments.