Lowering can be required for a number of reasons. Touching
the ground and geometry changes are the two main ones. We have been
lowering suspension for over 25 years. In some cases it is as simple
as the addition of special spacers in both the forks and shock. In other
cases it is quite involved including changing or modifying springs and
custom machining. We can lower your suspension whether it's Street, Dirt
- Race Tech offers Suspension Lowering for all rebuildable suspension.
Note: some models are not rebuildable. Check our Product
Search. This is more of a problem on the rear. In this case we may
be able to build custom G3-S Series Shocks for you.
- We normally recommend lowering a motorcycle 25mm (1").
You will be surprised how much of a difference this amount makes. The
reason only 25mm is recommended is the loss of ground clearance and
travel becomes more of a problem the further you go. However we
can lower the motorcycle any amount you want. Keep in mind that the
more a bike is lowered the more likely it will be that new springs are
required (see below).
- Some street models are already lowered. On these models further lowering should be confined to show applications as ground clearance and therefore cornering clearance might be a problem.
- WE DO NOT RECOMMEND LOWERING LINKS! They do nothing to decrease
the travel. This means the tire can bottom out through the fender!
This has the likely potential to stop the rear wheel from turning and if this happens,
it is our belief, can cause a crash.
the suspension is done internally using spacers. In other words
we are making the shock and forks shorter. Lowering is reversible so
you can return the suspension to stock height if you desire.
- Keep in mind that shortening the shock by 5mm does not lower the
rear end 5mm. This is because of the leverage ratio of the linkage
or geometry of the shock mounting. In general most modern dirt bikes
have an initial leverage ratio ranging from 3.1 to 4.0. With a 3.1 leverage
ratio a 3mm spacer would lower the rear end 3.1 times the 3mm or 9.3mm
at the wheel. Knowledge of this relationship is critical in making the
spacer the proper length.
In general when lowering a motorcycle, both the
front and rear end should be lowered the same amount.
services available to check for proper geometry and
may be purchased, but they do not come in the form of a kit specific
to each model. Lowering spacers should only be installed by an
experienced suspension tuner familiar with the entire lowering process.
Please contact our sales department for more information 951-279-6655.
- Shorter springs may be required for the reduced length of the
forks and shock. This
may be accomplished by modifying the stock springs or by replacement
with a RT HP Spring or
even with a modified RT HP Spring. When a spring is shortened it becomes
stiffer. When modifying the stock springs this may or may not be beneficial.
This will be determined on a specific application basis. We may need
to see your shock and forks to find out.
We strongly recommend suspension be revalved for
reduced travel with our Gold
Valves during this process.
This will set the valving properly
for the decreased travel, for your riding weight, ability, and type
of riding. When the rear end is lowered the travel starts deeper into
the leverage ratio curve and this affects setup.
Moto Conversions require both lowering and bottoming point
the bottom-out bumper is shortened and moved as well. The spring rates
are radically changed and the geometry is setup. Please check out
Another solution for gaining inseam clearance is
shortening and/or recontouring
We have found a quatlity company that can perform these
modifications to your stock seat at very reasonable prices.
to contact Josh Geraurd at MX Seat Pro.com
or call him directly at 909-645-0834.
of seat recontouring.
- Prices: Cost for lowering suspension varies greatly.
Some models only need spacers installed while others needs custom machining
and springs or spring modifications.
Pricing starts at around $225 for Forks and $215 for the Shock ($440
for both), this includes rebuild and oil and lowering spacers only.
Any extra parts, springs, or custom modification including
machining is extra. Please call for specific pricing 951.279.6655. Please
recognize that we will have to see some models before we can give exact