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Polaris and Yamaha's tracksPolaris settled on 2.4-inch lugs for its 50th Anniversary sleds because that was the maximum height track that would clear the tunnel and heat exchangers to properly clean itself. The track was vicious in the powder and didn't give in to gravity and weight.
When the 2.4-inch track squared off against a standard IQ RMK with two-inch lugs (of same track length) the standard IQ RMK generated quicker track speeds but couldn't pull the hill higher than the 2.4-inch track. The taller lugs also pushed Polaris' Sidehiller skis more than the standard 2-inch track. Unfortunately, we haven't had ample time on this Polaris track to feel totally comfortable.
Yamaha is sticking to its tried and true - 151x15x2. We all know this track dimension works. However, the RX-1 Mountain needs a 159-inch shoe with 2.25-inch lugs. Mountain Performance's Mac Randolph recommends the standard track be replaced with the Attack 20 track to boost performance.
We, like you, are waiting for the dust to settle on track lengths. Each OEM wants to be unique. But all we care about is the end result. There are certain questions I'd like answered, and I think most mountain enthusiasts agree.
Will the track allow the sled to float? Will it allow deep-snow, slow-speed boondocking? Will it not tear up a hyfax on a hard trail?
Innovations are continuing so we will have to keep a sharp eye on the track wars!