I can't for the life of me see why you find this statement puzzling, the Pro Cross was never designed to house a three cyl for stroke engine, it was in 2014 when the viper came out where Cat and Yamaha shoehorned the Viper engine in the pro cross, yes with some shock adjustments and suspension upgrades got it to handle good, than the turbo winder engine with some chassis changes and body work changes made a great handling sled with lots of power, but as anyone that owns a winder knows you have to do few of upgrades to keep them reliable on the trail, yes I have driven a viper a few times but couldn't see with the steam hitting you in the face, also had a chance to throw a leg over a tuned winder, not for the meek of heart by any means, road and handled nice and liked the rider forward position, but my buddy had over 30 grand into his sled so it wants work and ride good, I will stick to my trusty Apex XTX and do my regular maintenance every year, may not handle as good as a winder but I don't have to put another 3-5 grand into it to keep it reliable either, I guess my point is that the next pro cross platform will be more and better fitting for the turbo engine and Viper engine with a even better handling and ride.