Do not buy Rare Electrical starter because it does not have oil seals for the clutch. Here is the motorcycle after a few hours ride, oil is everywhere, on the muffler, under the starter compartment, even on the rear tire
I removed the Rare Electrical starter and open the starter case and here is what I found. It looks like oil leaked from the gap between the front starter cover and the main body
The starter is full of primary oil inside. The surfaces between the cover and the main body are not machined, they just have as casted finish, so oil just goes out the starter with no resistance
There is no any o-ring seal or even groove for o-ring between the cover and the clutch bearing, oil just leak trough the gaps once engine heat build temperature and pressure in the primary cavity.
No any seal on the shaft
I installed the original Buell starter back with new clutch, I will see if is going to leak. The only place when the Buell starter can leak is the shaft because the new clutch does not have seal. But the Rare Electrical starter leaked everywhere including the area around the clutch bearing because it does not have O-ring. I have feeling that I will need to buy original Buell clutch with seal or just new Buell starter to replace the starter again. I hate to dig into the primary again and again
Do not buy any starter or starter clutch except original Buell starter or Buell clutch or if you are sure that the starter or clutch you are going to buy has all seals (starter cover should have o-ring around clutch bearing, clutch should have sealed clutch bearing itself, clutch should have seal inside the clutch tube for starter output shaft).