Hey, I had a 98 700 rmk in the day. I did extensive clutching, Big bore from slp, Big bore Slp twin pipes. The machine would pull hard all day with no problems. I can't remember anymore what springs I was using in the clutches but I do remember using heel clicker weights. These weights are great they allow you to put weight where you what it. I was using 78grams in the mountains which is way more than stock it would pull hard but would also trench, but for flat land racing it top out at 115mph pulling hard. I kept all my parts when I sold it but they burn't done in my garage fire. I have both a set of stock twin pipes and the big bore pipes if your interested. Hope this helps