I own a 2010 and 2013 SkiDoo Renegade X 800. I have the split rail ski system on both sleds. They are GREAT! The handling of the sleds are over the top....They have eliminated all push/steer and darting. Not to mention it has extended carbide life immensely. I usually have quite a few of "add-ons" on my sleds and this is on the top of my list. I am a very happy customer!