Join Date: Mar 2012
Location: Kingman, AZ 86409
Heads are interchangeable, later year 650 crankcases will take a 700 cylinder without any modification. I'd stick with your case, go with a 700 cylinder and piston, and head. Keep the carburation and go have fun! Try PowerSportsNation for quality used parts!
2009 700EFI XTX, , AC Winch, 2010 Dust Shield EPI Sport Utility Clutch Kit , Street Legal, Cage chopped 2 ", Aluminum Diamond Plate Trim, Relocated Factory Bladders with covers, 5 Pt. Harness installed, Bed Tiedown System, Scat Pro-Car Seats, Secondary Battery installed, Oil Pressure, Oil/CVT Temperature, Volt Meter & Water Temp Gauges installed with Dash Plate, Bighorns, ITP Black 212 Wheels. Tonneau cover. 750 Big Bore Kit, Web Cam, and Rocker Arms.
Either - Dick or RD