The only practical way to reduce the clutch lever pull force is to change the diameter of the slave cylinder. The force-reduction aftermarket slave cylinder replacements offer around a 20% reduction but at the penalty of needing a longer clutch lever pull to get full disengagement. Another solution would be to just reduce the distance between the clutch lever pivot point and the master cylinder in combination with decreasing the diameter of the master cylinder. These options are not currently offered in the aftermarket, although Ducati did change the master cylinder’s bore from 13mm to 12mm in the 2001 model year in an effort to decrease the pull effort somewhat.
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