22000 miles, drive pulley and middle shaft both stripped. The pulley only fit less than halfway onto the shaft. I had to replace the middle shaft and pulley. YAMAHA installed a 2005 middle shaft in my bike. YAMAHA SAYS THEY NEVER HAD THAT PROBLEM - NOT TRUE.
Also the engine makes a knocking noise; it drives me crazy.
YAMAHA CO. SUCKS.
Would you buy another motorcycle from this manufacturer? Don't Know
Review Date: 30th June, 2012