Raise the motorcycle with a bike stand, milk crate, etc., so the rear wheel
is just slightly off the ground. Remove the two 19 mm nuts that hold
the links to the rocker and the swingarm and push the bolts out the left
side. The swingarm may need to be raised to allow the link bolt head
on the swingarm end to clear the chain, so remove the rocker bolt first.
When installing the KoubaLinks, (engraving to the outside) be sure the
rubber seals are inside the links and seated against the rocker and swingarm
bearings. Push the link mounting bolts in from the left side, (swingarm
bolt first) then install the 19 mm size nuts and tighten to 70 lb-ft.
For the best performance, set the sag (amount of vertical movement of the
rear axle from NO weight to BIKE weight plus RIDER weight) at 2.5-3.0 inches
with rider in full riding gear, standing on the pegs. If the links
are for lowering purposes ONLY, sag can be set at 3.75", and will lower
the rear of the bike approx. 1.75". 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 left side (either just above the battery or just in
front of the frame rail downtube.) Disclaimer: DO NOT SHORT OUT THE
POSITIVE BATTERY POST TO GROUND :-( After loosening the jam
nut, lube the threads on the shock and the lower spring retainer. Then
turn the spring clockwise by griping the lower part of the spring with
your hands to turn it together with the preload nut. Turning the
spring/nut clockwise increases the preload and decreases the sag and visa
versa. 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. .75 inches
until they contact the handlebars for lowering of the front. *Anymore than
that could allow the front tire to contact the fender. Disclaimer:
Lowering the rear more than the front and visa versa will change the geometry
and could affect handling, so be careful out there.
For the stock DRZ250 shock, set the compression and rebound clicker to
their mid positions (basically stock settings). If bottoming is too
frequent, try turning the compression clicker in (clockwise).
If that is not enough, a stiffer spring may be required.
like what the KoubaLinks do for your suspension, please tell everyone,
if you do not, please tell us. We can be contacted at our e-mail
address below and are always interested in your questions or comments.