need help, where to strenghten sub frame

[newfieattak]

got a bent sub frame , going to add support, once back in place . Where is everyone putting the support. Very weak sub frame can be moved with 4ft pipe with little effort. this is not a very good setup. any help or pics would be a great help.

 

[Crewchief47]

There are some pictures here:

http://www.ty4stroke.com/viewtopic.php?t=54013

Keep in mind that Yamaha likely won't cover anything that bends/breaks after you modify the front end like these guys did.