What is an auto-clutch?
Let's start with what an auto clutch is not --- it is
not an automatic transmission. You still get the
satisfaction of shifting, but you don't have to
constantly worry about the clutch. An auto clutch
automatically engages and disengages the clutch - you
simply shift into gear, twist the throttle, and go.
It is also not a slipper
clutch, which disengages the throttle is chopped, a
properly set up auto-clutch maintains engine braking.
How will it affect my
Rekluse Auto Clutches make it easier to go fast, instill
confidence and tame the gnarliest terrain. The
auto-modulation of the clutch increases traction and
virtually eliminates engine stalling. All this leads to
more fun, easier to ride and increased rider
performance. For the motocross racer the bottom line is
that you will improve your lap times. You will put down
better traction, leading to more efficient and
ultimately faster cornering. By decreasing wheel spin
and increasing traction, your launches off the line will
improve substantially--putting you at or near the front
of the pack. For the off-road racer, you will be able to
navigate technical sections much easier than before.
Rekluse Auto Clutches eliminate the necessity of
modulating the clutch in tight terrain, which will allow
you to concentrate on the terrain in front of you. This
will enable you to get better traction and develop
better throttle control. Plus--because the Rekluse Auto
Clutches disengage when your engine speed drops to
idle--stalling will be a thing of the past. You'll be
able to ride longer, faster, and with less fatigue than
Can I still use my clutch
lever like normal?
Absolutely. You can still
use the clutch lever to modulate clutch engagement
manually. We love the precision you can get through the
clutch lever, so we designed our products to preserve
that experience for those that love it too.
Do I have to use the clutch
You still need to use the clutch lever to shift gears,
but you don’t need to feed out the clutch lever when
starting from a stop. If you’ve mastered power shifting
(clutch-less shifting) then you don’t need to touch the
clutch lever if you don’t want to.
How does it work?
A traditional manual clutch uses springs to push a
pressure plate into the clutch disks to keep the clutch
always engaged until the rider pulls in the clutch
lever. Pulling in the clutch lever pushes the pressure
plate away from the clutch disks to manually disengage
the clutch. An automatic clutch keeps the pressure plate
away from the clutch disks when the engine is off or at
idle. When the throttle is applied and the engine speed
increases, a centrifugal device within the clutch
expands, engaging the clutch disks.
How will it affect my riding?
It makes stalling your bike virtually impossible.
For the street rider, anti-stall technology means you
can sit at a light with your bike in first gear without
touching the clutch lever. The light turns green and you
just get on the throttle and go. You can even start in
second gear and our clutch engages smoothly without
lagging or jerking—it just goes.
For the dirt rider, anti-stalling technology means that
your bike stays running when you take a tumble over that
gnarly log or when you drop the bike in a corner. You
just pick up your bike and get going—no exhausting all
of your precious energy trying to kick over a hot bike.
It lets you focus.
Low speed maneuverability is improved greatly as the
auto-clutch will automatically feed traction to the rear
wheel smoothly. This frees the riders mind to focus on
bike movements and control.
With your mind off your clutch, you’re free to
concentrate on other things like the scenery of that
gorgeous mountain highway, negotiating that steep single
track, or how to get through that strategic line.
It improves your performance.
Whether you’re after faster lap times or just an epic
ride on the open road, our technology gives you a
performance advantage. Launch off the start line (or
stop light) faster, take corners in a higher gear, and
concentrate on more precise throttle control.
It unleashes your skill as a rider.
We constantly hear how our products allow people to ride
more efficiently and with more confidence than ever
before. Confidence doesn’t have a metric like horsepower
or torque, but our clutches deliver more than just
improved performance, they help you take your ride to
the next level.
Will an auto clutch wear my
parts faster? No. Rekluse
clutches are more efficient at clutching than the human
hand, which means your clutch parts will last as long as
stock componentry. In fact, Rekluse clutches are so
efficient that they typically last longer than a
conventional clutch. The exception to this rule is if
the clutch is installed incorrectly and the break-in
procedure is not performed.
How do I bump start a
Rekluse? All three Rekluse
Auto-Clutches can be configured to bump-start the engine
in the event your normal starting system fails. However,
they cannot be configured for bump-starting on the go
like a standard clutch. One must stop the motorcycle and
make an adjustment to bump start and then make another
adjustment to continue riding once the engine fires.
Bump-starting can be done to get you home.
Are Rekluse clutches slipper clutches?
No. A slipper clutch is designed to limit wheel hop on
deceleration and when downshifting into corners, but it
will still stall like a full manual clutch. Rekluse
clutches provide many of the same benefits of a slipper
clutch but they are designed to fully engage and
disengage based on engine RPM and won’t stall.
Do you have to let off the throttle to shift a
If shifting without the clutch lever it is recommended
to “Power Shift” just as you would a regular manual
clutch. Even with a Rekluse clutch it can be tough to
shift up through the gears if you are under power
without chopping the throttle or bumping the clutch
Do you still shift gears with a
Rekluse auto clutch?
Auto-Clutches automatically engage and disengage
clutches not transmissions. One must shift the gears up
and down just like in a motorcycle with a manual clutch.
The clutch feed and modulation to lock out (full
engagement) and the disengagement (to prevent stalling)
are automatic. The rider doesn’t have to manually
modulate the clutch lever as this is automatic. However,
all Rekluse Auto-Clutches have the manual clutch lever
override feature allowing the rider the choice to use
the clutch lever or not.
Does the Rekluse eliminate the need for a flywheel
Does the Rekluse give a fly wheel effect?
Generally an auto clutch does not have much of a
flywheel effect. Because the auto clutch eliminates
stalling, which is usually the reason for adding a
flywheel weight, most customers of a Rekluse clutch
choose not to run one. The auto clutch allows you to
ride gear tall with greater success, so for many, there
is not a need for a flywheel weight once a Rekluse auto
clutch is installed. Some choose to use both.
Do I need to modify any
of my existing clutch components?
Can I go back to a stock setup?
No modification of your existing clutch parts is
necessary with any of our current Rekluse clutches. Yes,
you can return to a stock setup because no modification
to your existing clutch parts is necessary. Generally,
you can return a bike to stock manual setup in about 30
minutes. With the addition of a manual mode pressure
plate, the Rekluse Core EXP can be converted from auto
to manual mode and back to auto mode in 5 to 10 minutes.
How hard is it to
The rule of thumb is that if you can change out your
clutch plates, you can install any of our Rekluse
clutches. Detailed instructions are provided with each
kit and we have installation videos on Rekluse's website
(rekluse.com). Technical Support is available there
Monday-Friday from 8:30am-5:00pm Mountain Time.
Are Rekluse clutches adjustable?
Yes. All Rekluse Auto-Clutches are adjustable to suit
rider preference and conditions. Rekluse discovered that
most riders are satisfied with our recommended setup,
but they can be easily changed. Refer to your Owner’s
Manual or Tuning Guide to adjust the settings to your
liking by changing springs, wedges and idle speed. These
changes will adjust how hard the clutch engages, and at
what RPM it engages. Engine braking will also be
What do the different springs on a
The small colored springs change the engagement RPM at
which the clutch begins engaging. The larger pressure
plate springs (for some models) will change the clamping
force on the clutch pack and affect the stiffness of the
lever pull. Stiffer springs can help prevent top end
What maintenance is required?
Periodic check of your Installed Gap is necessary with
your Rekluse clutch. This is a simple process that
differs by model, but does not take more than 10 minutes
with any Rekluse Clutch. Otherwise only regular oil
changes are needed at the same frequency as your OEM
clutch. For more information, check out the
maintenance videos on
What is an Installed Gap?
Installed Gap on z-Start Pro Clutches is the measurement
between the pressure plate and the top friction plate.
This can be measured with the provided no-go gauges
placed 180° (directly across from each other). One gauge
should slide in easily and the second gauge should not
slide in. Don’t use excessive pressure when inserting
the no-go gauges. This can also be checked with two
feeler gauges used in the same manner as the no-go
gauges. The measurement needs to be 0.030-0.045 inch.
(.0762mm – 1.143mm)
The Installed Gap on EXP and Core EXP is measured by
checking Free Play Gain at the clutch lever. Whether
using the supplied rubber band or your finger, the lever
is allowed to move toward the handle bar when the EXP
disc is fully expanded by centrifugal force, cause by
the rotation of the clutch when you rev the engine. The
expanding disc forces the pressure plate toward the
clutch cover, introducing a gain in clutch lever free
play (AKA slack in a cable or less pressure on the
Too much Free Play Gain = Too small of an installed gap
Too little Free Play Gain = Too large of an installed
What kind of oil should I
Rekluse have been
performing ongoing testing of oils over the last 12
months given some of the advancements which have been
made including the updated JASO-MA2 classification. What
they have learned is there are many good motorcycle
specific oils available from companies like, AMSOIL, Bel-Ray,
Maxima, Motul, Nils, and Spectro (listed in alphabetical
order). The best oils they have tested meet the spec of
JASO-MA or JASO-MA2 which signifies that the oil is fit
for use in wet-clutch motorcycles. It is important to
note that some synthetic oils have this certification
and some don’t.
For bikes with separate oil for the transmission and
clutch, there are increased options due to the number of
transmission specific oils available meeting the JASO
Rekluse advise against using any oil that does not have
JASO MA or JASO-MA2 certification—especially full
synthetics intended for automobile use—as they typically
contain friction modifiers that will reduce clutch
performance even to the point where it can cause