I thought there used to be a way to get to this stuff on the website of KTM of USA in Amhearst Ohio ( www.ktmusa.com ) , but I can't find that section now.
KTM-Parts has the best LIST of 990SM-R accessories I can find, but not always the best prices.
Write down the part numbers of the items you like.
KTM MIKE . . . . . . . KTM EQUIPPED SINCE 1999
three 640's (sold), two 950's (sold),
530 EXC Supermoto, 690 SMC, 990 SM-R