Seller notes

YAMAHA YZ PARTS SPECIAL This auction is for A FACTORY YAMAHA LEFT SIDE HALF OF THE CYLINDER EXHAUST POWER VALVE , ORIGINAL PART #39W-1131A-01-00. This is off a 1983 but might work for the 1984 and 1985 YZ125 models but we don't know for sure so please do your homework ! It has a few chips off the race body of the valve, look at pics. I personally would fill in with JB and file smooth before install. ALSO, someone at one time thru its life broke the bolt end off and had it rewelded back on. It wo...

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