Motorcycle Suspension Components
with other products available from Kientech Engineering
Instructions Fits: 2010-12
Suzuki RMZ250/450 and RMX450Z KoubaLink PN:
RMX2 & RMX3. Replaces
stock link assembly PN: 62600-28890 RMX2
lowers the rear 3/4" & RMX3 lowers the rear 1 5/8".
*The 2013-up RMZ250
& RMZ450 requires us to drill out the fork end eyes to 14 mm. These replace
Suzuki's stock link assembly PN. 62601-28830
Please remind us if you put in an order that your bike is the 2013 or newer
installed pictures on a 2010 RMX450Z scroll to the bottom of this page.
RMX-2 Link Shown Above
1) 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 that hold
the stock “H” link to the rocker and the engine cradle. *If you have the
Pro-Moto Billet side stand or the RMX model, the side stand/mount with
the left foot peg must be removed before the front link mounting bolt with
the chain roller can be removed. Push the bolts out the left side/front
mounting bolt first. *The swing arm may need to be raised slightly
to allow the first bolt to slide out freely.
2) The new
links come with only the bearings and seals, so install the center
sleeve & both
step washers (flat side out) from your old
OEM link into the new
KoubaLink. Install the new link on the bike
(rear mounting bolt first) by pushing the mounting bolt in from the left
side. You will have to raise the swing arm to align the front mounting
holes and then push the mounting bolt with the chain idler in from the
left side. Be sure the grease fitting on the link is facing down.
*Left link engraving will be upside down and back wards, right side will
be readable left to right. Pump some grease into the fitting now
as sometimes tightening the mounting bolt nuts can seal the bearings too
tight to allow the air to escape.
the washers and 17 mm nuts on the mounting bolts and torque to 35 lbs-ft.
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 3.5" with
the RMX2 link and 3.10” with the RMX3 link, rider in full riding gear,
standing on the pegs. Loosen the triple clamp pinch bolts and slide the
fork tubes up 1/8th" to 3/8th" depending on how quickly you would like
it to turn with the RMX2 link and until they almost touch the underside
of the stock handle bars with the RMX3 link. Do not over torque the triple
clamp bolts. (14 ft. lbs. lower, 17 ft. lbs. upper) If
the link is used for lowering purposes ONLY, rear race sag can be set at
100 mm/3.9 inches. The RMX2 link will lower the rear 3/4" and the
RMX3 link will lower the rear 1 5/8th inches. The easiest way we
have found to adjust the rear spring preload is use a long punch to loosen
the top jam nut from the right side, grasp the spring at the bottom from
the left side 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.
5) 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
mounts. This will allow the forks to be slid up farther but is not
recommended unless you require the quicker steering as sliding the fork
tubes up farther could allow the tire to hit the fender when the forks
near bottoming. *Disclaimer: Raising or lowering the rear more
than the front can change the geometry and could affect the handling, 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.
Norm Kouba Email:
Ordering info. and pricing can be found on our ORDER