What years for frnt brake rotor for 99 WR400?

The second one is your best bet. I bought a front disc from a 450 (floating style)for my 99 WR, and while it will bolt onto the hub just fine, it is actually a few millimeters larger diameter. The outside edge would rub the caliper, and the brake pads came in past the inside diameter of the rotor. :excuseme:

You'll want something that specifically fits the '99. The second link you posted looks the same, so I would check the pt. # on bikebandit.com or somewhere that shows the Yamaha pt. #'s :confused:

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