I have a 1995 Yamaha rt100 with bent forks. I ha met found any rt100 forks so are there any alternatives that will work?

Contact these guys and see if they can make a set. I have some for the DT/RT, they are excellent quality.

franksforks.com/

here is a set from Ebay, they look pretty good. they can use fork seals and new fork oil.
90 1990 rt 100 rt100 forks upper lower triple tree bar clamps axle Completed

Depending how bent. A. good engineer will be able to straighten them. I nearly always manage to do mine without pulling apart. Just support under the end of the lower slider & at the top of the tube & revolve it to find the high point & have 'that' directly under the press ram but using something semi soft at each point to avoid damage. Easy to say but takes time to get it right & easy to get it wrong. Always need to go 'past' the point of straight to de-stress it i find. Something like that.

If they aren't bent too bad you can try my method using a band clamp. It worked on my little JT forks.

yamaha-enduros.com/index.php/forums/mini...bent-forks-cheap-fix

Or even try the reverse of Schu's good trick above & turn them exactly towards each other & lay the bike on its side then put a jack between the forks & jack them outwards until straight. On second thoughts maybe not. If i tried that the jack would fly out & hit me in the head knowing my luck lol.