My husband has the Last Rebel Racing confed. flag seat cover on his 400ex. He got it from LRR,(CEET made it for them)...but they are OUT of business.
Good luck finding one...you may have to have it custom made.
Hope this helps...

 

Anyone who thinks the confederate flag symbolizes racism is just plain IGNORANT! I have the rebel flag helmet skin and I think it looks great. A seat cover to match would be great also. Im going to try bad saddles. Thay make pretty durable covers.