Maintenance and Tuning
Yes. All Rekluse Auto-Clutches are adjustable to suit rider preference and conditions. We’ve 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 affected.
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 slip.
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 our website.
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 hydraulic system).
Too much Free Play Gain = Too small of an installed gap
Too little Free Play Gain = Too large of an installed gap
We 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 we 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 we 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 standards.
We 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 clutch-slip.