2005-07 KX250 2 stroke (PN. KX250-1 & KX250-2)
KX250-1 lowers the rear 3/4" & KX250-2 lowers the rear 1 5/8".
Replaces stock link PN.
KX250-2 Koubalink shown
Raise the motorcycle with a bike stand, milk crate, etc., so the rear wheel
is slightly off the ground. Remove the two 14 mm nuts off the mounting
bolts that hold the “H” link to the rocker and the engine cradle, push
the front bolt out the right side & the rear bolt out
left side/front mounting bolt first. The swingarm may need to be raised
slightly to allow the bolts to slide out freely.
The new link comes with only the bearings and seals, so install the center
sleeve & the two step washers on the ends (flat side out) from your
old OEM link into the bearing end of the new Koubalink. Install the
KoubaLink (grease fitting pointing down) on the bike
mounting bolt first) by pushing the mounting bolts in from the right side.
Make sure all the vent hoses are inside the front mounting brackets and
in front of the link before you line up the mounting holes of the bracket
and link. Push the rear mounting bolt in
the left side. **You will have to raise the swing arm to align the
rear mounting hole with the link eyes.
After installing the KoubaLink and before installing the mounting bolt
nuts, check that the grease fitting is facing down. *Left link engraving
will be upside down and back wards, right side will be readable left to
right. Install the 14 mm nuts & torque to 35-40 lbs-ft.
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 3.25”
to 3.50” with rider in full riding gear, standing on the pegs. Slide
the fork tubes up approx 1/8-3/8" (depending on
quick you want it to turn) with the KX250-1 link and until they barely
clear the bottom of the stock bars with the KX250-2 link. *Do not
over torque the triple clamp bolts. (14 ft. lbs. lower, 17 ft. lbs. upper)
If the links are for lowering purposes ONLY, race sag can
set at 100mm/3.90", and the KX250-1 link will lower the rear 3/4" and the
KX250-2 link will lower the rear 1 5/8". The easiest way we have found
to adjust the rear spring preload is to use a long punch to loosen the
top jam nut from the right side, then grasp the
at the bottom and turn the spring and the nut at the same time. **You 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
jam nut with the punch after setting the sag.
For additional lowering of the front, the handlebars can be spaced up by
installing a washer of 1/4" max thickness on top of the flanged washer
above the top rubber handlebar mounts. This will allow the forks
to be slid up farther but is not recommended unless
require quicker steering. Remember, lessening the rear race sag or sliding
the fork tubes up will make the steering quicker and the opposite will
slow the steering. Disclaimer: Do not slide the forks up more
than the stock handlebars with the 1/4" spacers will
as that may allow the tire to hit the fender. :-( Lowering
the rear more than the front can change the geometry and could effect the
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.
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