Yamaha Dirt and Dual sport interchange info:

[Sandblaster]

These lists are constantly being updated.
If there is information that you need that is not on this list, shoot me an email at oem-cycle@comcast.net or, post the question.

YAMAHA YZ80, YZ85 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAYZ85BIKEID.shtml

YAMAHA YZ125 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAYZ125IDE ... TION.shtml

YAMAHA YZ250 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAYZ250BIKEID.shtml

YAMAHA YZ250F ENGINE AND PARTS ID
http://www.oem-cycle.com/Yamaha_YZ250F_BikeID.shtml

YAMAHA YZ360, YZ400, YZ465, YZ490, WR500 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAYZ400BIKEID.shtml

YAMAHA YZ400F, YZ426F, YZ450F ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAYZ400FBIKEID.shtml

YAMAHA IT ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAITBIKEID.shtml

YAMAHA TT250, TT500, TT600 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHATT500BIKEID.shtml

YAMAHA TTR125 ENGINE AND PARTS ID
http://www.oem-cycle.com/YamahaTTR125BikeID.shtml

YAMAHA WR250F, WR400F, WR426F, WR450F ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAWR400FBIKEID.shtml

YAMAHA XT350, XT600 ENGINE AND PARTS ID
http://www.oem-cycle.com/YAMAHAXT350BIKEID.shtml