Power Sports Tech manufactures a high flow velocity style intake system. We have found that in deep powder riding there are problems with many air boxes filling up with snow and restricting the air flow to the carburetor or throttle body. There can also be an icing effect to the pre filter caused by heat coming from the engine and glazing the prefilter. The PST intake system is an open system that gets rid of the air box and keeps snow from building up on the filter.
Please let us know what bike you have at the check out notes section.