First a little history, SHawk is a '99 with 9,600 miles. Adult owned and ridden, never abused. Oil/filter changes with non-synthetic oil every 3k miles.

I recently did some mods, Pazzo levers, Coerce counter shaft sprocket cover(CSSC), and changed oil to Mobil1 4T 10/40 synthetic. Prior to mods there were no issues with the clutch.

While the CSSC was off all parts were thoroughly cleaned. The clutch MC, line, and slave cylinder were flushed and bled using a MightyVac and DOT 4 fluid, no banjo lines were broken.

Now for the problem. When cold the clutch was grabby, after warm it slips.

If I ride easily, with small amounts of throttle it shifts fine and will go down the road normally. As soon as I open the throttle it slips badly.

Any suggestion? Is the synthetic oil too slippery? Has the Pazzo clutch lever, or Coerce CSSC changed clutch actuation? Do I need a new clutch after only 9.6k miles?

Thanks for your replies.

 

Your clutch is very likely fine. The issue is probably with the with the clutch slave. The hydraulic clutch is known to be really tough to blead.

 

Some members have reported different oils causing their clutch to slip, but you may want to bleed the lines again... 8541Hawk has had this cause his clutch to slip inexplicably.

 

Try it with the stock countershaft sprocket cover.

 

Go back to your original oil or try semi-synthetic (recommended)