Great machines. KQs are equipped with a manual differential lock, independent front and rear brakes(for steep hills), and the CVTs have a centrifugal clutch before the primary clutch, which protects the drive belt. All features that Can-am doesn't offer. King Quads and Grizzlies are reportedly the most reliable ATVs available, but Grizzlies are notorious for overheating. Polaris are powerful machines, but when backing off the throttle at speed the engine brake practically throws the rider over the handlebars. Polaris, Arctic Cat, and Can-am have less than stellar reliability reviews. Can-am fanboys will say Can-ams are so much more powerful than the rest, but all that means is that Can-am riders will be the first to get stuck in the mudholes. The missus and I have had our KQs 750AXi/EPS for three years now and neither machine has had an issue. The lower center of gravity combined with the smoothest engine in it's class, KQs are extremely comfortable to ride all day long. You will not need to modify your King Quad in any way unless you plan on spending a LOT of time in muddy water, in which case you may want to upgrade the stock tires with Zillas or Outlaws. Be prepared for a much stiffer ride once you change tires. Do NOT change the tire size, utilize the original rims for optimum performance in all areas in the field. I'm still running on the stock tires and have no desire to replace them until they are worn down. The machines are that good.