I know Laeger use to make a-arms, but it isn't on their site.

Here is avenger, never heard of them but they make them.
http://www.avengeratv.com/lt250.html

Some on ebay for cheap, not sure which year though.
http://www.ebay.com/itm/Lt250r-Extended-A-Arms-2-/251802503564?pt=Motors_ATV_Parts_Accessories&hash=item3aa099498c&vxp=mtr

Maybe email full flight and ask them
http://vh10.nethosting.com/~hnme33/cart/index.php?main_page=product_info&products_id=24&zenid=a0a690771d23ca522a7e89879dd23964