Wasn't the AXYS platform introduced with the Switchback a year before it was used as a mountain sled chasis?
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Yes, but the flat lander and the mountain version of the AXYS chassis only share one part number. One of the forward bulkhead halves is shared, the other side is the same casting but is machined differently for the steering frog mount. The rest of the chassis' are unique to their respective end use. In essence they only share the acronym AXYS.
P.S. Revs Rock, Happy to help! I knew what you were getting at as soon as I read your threads title. If you ever need me to stir the pot again just get Rulonjj to write another book so I can paraphrase it with a simple sentence.