I recently read an article about a 900cc Ninja with 200k on the original clutch. And, as I understand it, the guy around here with 150k on his 900 is still running the original clutch (or maybe he's replaced it once... but not more than that).
How about oil? What are you running? I mean I don't want to take that dead horse out for beating here BUT, before I swapped a clutch at 22k I might change the oil and consider another brand. Maybe switch to a synthetic if your not using it, and if your not using a motorcycle specific oil, maybe switch to that. Like I said, the oil issue is one that gets pretty intense around here, lol, so I won't discuss it too much, but that might be a first step.
The other option, is to clean, lube, and adjust the clutch cable. (Actually, probably do that first) If you find that it's out of adjustment to the point the clutch is dragging, then it's possible the clutch is out. Or you may find that the clutch isn't ever fully grabbing due to poor adjustment, easy enough fix.
For what it's worth... I switched to Valvoline full synthetic from whatever the dealer stuck in there when I bought it. The clutch is a lot grabbier now. It wasn't slipping before, but it grabs very good now. When it's time for an oil change it's something to consider.
"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."
Romans 5:8 (NIV)
2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer
2011 Honda Shadow Aero 750 (Wife's)
Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack
Past: 2006 Vulcan 900 Classic LT