If this helps anyone, I checked my stock clutch pull with a quality spring scale and it took 28 lbs to pull it to the grip and 18 lbs to hold it there. I installed a Oberon CLU-1125 slave only and it took 17 lbs to pull it to the grip and 10 lbs to hold it there. I did use DOT 5 fluid when installing. I have always used it in all my clutches ever since I have had Aprilia's.