[asphaltgambler]

My answer - no. The stock primary chain and front compensator sprocket do a pretty good job of keeping the drive line smooth-feeling. The problem with primary belt drives is inadequate cooling / lubrication to the clutch pack. Heat, oil contamination and misalignment are the big items to overcome to make the drive belt live, but the bigger problem is clutch plates overheating / warping by not being able to dissipate the heat through an oil bath. They do make 'dry' clutch plates for this but be aware they tend to 'rattle' with the clutch lever pulled in.

On street bikes in the past with stock or moderate HP, you'd run a primary belt set-up mostly to be cool and hear the belt whine (like a supercharger) as it trapped air between the cogs. The wider the belt set-up; the more noise it makes and of course looks very racey.

Drag race bikes use them to reduce rotating / frictional mass, weight and ease of access to service / adjust the clutch spring pressure..

There are guys who will run a small width (1-1/2") primary belt set-up, but keep a somewhat stock appearing primary cover - but spacing it out and having a screen where the clutch derby cover goes to provide airflow.