The American company Bel-Ray produces very good products. I have noticed that this oil provides a smoother clutch engagement/disengagement. Clutch operation feels more comfortable, especially with Harley's hydraulic clutch.
Extra Smooth. Significantly reduces wear on the main shoe, chain and clutch. Since the 70's I've only used Bell Ray Virgin Oil and Gear Oil 85-140. Never had a problem with primary or transmission drive or transmission wear.
Used HD3 in my main compartment on my 2012 UL. Worked fine until I swapped the cams, then the clutch slipped at the top end of the torque range. I switched to this product and now it works great. No more slipping. Already bought 3 times. A good thing.
Pros
Powersports > CHEMICALS > Motor Oil > Bearing Oil