Seat off a 1984 Yz250 it should possibly fit the 490 and the 1985 models

Plastic base is fine of shape as you will ever find

This seat has not been in weather

Foam is fine

Couple of splits in the cover mostly along the edges

Look at the picture of the rear mounts the one on the right side looks like it was loose as some point causing the hole to get oblong— wallowing this is the only problem I see

Please email me any questions