Last night I installed the clutch kit on my 06 500m and it made a huge diff. I didn't think that it would make much diff, but wow was i wrong! IMO it has more snap and power of the line than it did stock. Another piece of advice to anyone wanting to install one of these. Leave the primary clutch cluster on the bike. Its much easier to wrestle the springs if the cluster isn't moving around on you. Also make sure to take special measures to make sure that you don't lose the e-clips, they are a pain to find when they come off and you didn't see where they went.. lol! I highly recommend this clutch to any one w/ or w/o oversized tires. Its pretty easy to do and makes a world of diff. One more thing the instructions do not say to drain your coolant, but i found it much easier if you do.