Welcome to the site !!
There is a "Wanted" section of the forum down by the "For Sale" part , you might want to post there as well https://www.crfsonly.com/forum/viewforum.php?f=29
So are you looking for a "new" or "used" seat or seat foam ?? , if used you might also look on eBay , you can also find new ones as well there , also for new , they sell them here https://www.crfsonly.com/catalog/index. ... /4a/page/3
, there are several to choose from .....
Hope that helped