Raise the motorcycle with a bike stand, milk crate, etc., so the rear wheel
is just slightly off the ground. Remove the two 17 mm nuts off the
bolts that hold the link to the rocker and the engine cradle, push the
front bolt out the right side first. The swing arm may need to be raised
slightly to allow the bolt to slide out. Next remove the rear mounting
bolt out the left side. The stock link should now drop out the bottom.
the two inner sleeves out of the stock link and reinstall them in the new
link. **Important: The new KoubaLink comes with new bearings and
seals, but does not come with the new inside sleeves. After installing
these sleeves from the stock links inside the ends of the new link it is
ready to be installed on the bike.
the Koubalink by holding it up inside the front and rear mounting brackets
on the bike (grease fittings facing down/engraving readable from the right)
and push the rear mounting bolt in from the left side first, then push
the front bolt in from the right side after aligning the mounting eye with
the front bracket eyes. You will have to raise the rear wheel to
align these eyes. Install the two 17 mm mounting bolt nuts,
and torque to approx. 25 lb-ft. (Some years have a flat washer under
one or both mounting bolt nuts) You may want to pump a little grease into
the two grease fittings at his point.
4) 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 3.50" with rider
in full riding gear, standing on the pegs. If the links are for lowering
purposes ONLY, sag can be set at 4.0", and will lower the rear of the bike
approx. 1"on the XR400 and 1.5" on the XR250. The easiest way we have found
to adjust the rear spring preload is to use a long punch to loosen the
top jam nut and grasp the spring at the bottom and turn the spring and
the preload 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 the jam nut with the punch after setting the sag.
the eight (four per leg) 12 mm headed pinch bolts on the triple clamps
and the two upper fork boot clamps, slide the fork tubes up until the top
of the fork cap flange is between .475"(4th index mark) and .750" (depending
on where the rear sag is set) above the top of the upper triple clamp.
(The newer model 400's come from the factory with the fork tube's set at
the 3rd index mark even with the top of the triple clamp which is .375"
above the top triple clamp.) Torque the eight triple clamp pinch bolts
to 15 lb-ft., tighten the fork boot clamps and you should be done. Disclaimer:
Lowering the rear more than the front can change the geometry and could
affect the handling, also sliding the fork tubes up too far will allow
the tire to contact the fender/triple clamp on full compression, so be
careful out there.
If 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.
Ordering info. & pricing
can be found on our ORDER
US | FAQ | ORDER
Right Side View Stock
Link 04 XR400R
Right Side View After Installation