JamesM
Senior Retro Guru
I fitted a 100mm Rockshox Duke to a '99 Karakoram once and it looked pretty stupid. I didn't ride it though because it looked all wrong. I shortened the RS by 20mm and all was right again. The bike came with a 63mm Judy and the A-C on the rigid fork for that frame is 425mm I believe. I'd guess the '98 Backwoods would have the same geometry as my Karakoram.