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Here is the solution for your overheating problems in marginal snow conditions. By installing the MTNTK performance tunnel cooler you will add cooling surface area and coolant capacity. Once coolant has been added, this Cooler adds 6.5lbs of weight. We started with a fresh design and had our own profile made because the other coolers on the market do not fit the tunnel properly. This cooler is very simple to install and requires absolutely no welding! The engine runs much better when the heat is managed properly. It is a liberating experience to ride without your engine overheating. These coolers are the answer you have been looking for. Fits Arctic Cat Mountain Chassis and Yamaha Mountain Max two stroke engines only. Does not fit Cross Country or four stroke models.