I have a 97 RMK and just bought a 5" double pivot. This will be the best for this kind of sled. It will allow your weight to move forward and this will take weight off the track for better powder riding. You will need a throttle extension as well. I wouldnt go over 5" if i were you because if you were to roll your sled it would snap your steering post, then you would have to be towed back to the truck ;0. I will finish my riser project sometime within the next week and post pictures for you