![]() The sled, built on a modified ZR platform, was heavy and the engine only wheezed out a very sedate and smooth 60-hp. Who would buy such a thing? They were heavy and needed enormous displacement to match the performance of 2-strokes.Įven if it could be done, their weight would destroy the handling of what we then knew as a modern snowmobile.įrankly, the first versions of the 660 4-stroke weren’t very convincing evidence those fears were not true. Obviously, the OEMs had a much clearer idea of what was going to be necessary ten years down the road because they were already tooling up new SDI 2-stroke technology and getting ready to build 4-stroke sleds.Ĥ-strokes? At the time, because no one had built one yet, the idea seemed absurd. In West Yellowstone, Montana, when Supertrax first laid eyes on the new 4-stroke from Cat, the big question was… why? What you need to realize is that in early 2001, there were only rumors of impending EPA restrictions on snowmobiles, particularly on the tight Yellowstone Park rental market. ![]() 11 SLEDS THAT CHANGED EVERYTHING…AND HOW… ![]()
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