I have been looking for reduced hydraulic clutch lever pull effort on my 2010 SEUC.. I was pointed to the ClutchWIZ by Ken (northGeorgiahawg) about this product. It can be seen at http://clutchwiz.com ..
This bike came with the 364 # pink dot spring. I installed the ClutchWIZ with the SE spring that is 386 #'s.. Even with the heavier spring, my clutch lever pull is probably 25-30% less than it was. I am happy with the clutch lever pull I now have when sitting at a stop or in stop-go traffic and still have a great friction zone.
You will have to read the tech info on the ClutchWIZ site on why the heavier spring is needed when replacing the stock clutch spring retainer with the ClutchWIZ.
A benefit I was not expecting is that my bike pulls harder/stronger when accelerating. My clutch spring could have been weak? It had 23,000 miles on it and approximately 10,000 of them was pulling a trailer with my daughter as passenger.
Bike is stock except decatted stock headpipe, stock mufflers/baffles, open air filter, and Fullsac's TTS map. I do not ride hard. The maker of the ClutchWIZ stated to use a 480 # spring on a 110 and that's what many of you would need. Maybe I am lucky to get a long with the ClutchWIZ and the 386 SE spring.
I am happy with this combination after 400 miles and hope to continue to be happy with this setup. May not work for everyone. May be useful to someone wanting a reduced clutch lever pull and not go with the AIM or Harley version of the AIM..