LOL! Here we go, a brand war worse than Chevy vs. Ford!
Seriously, is he riding the Skidoo or the Cat?
And is the Cat the new fangled 800 ( or 600? I can't remember ) with their Direct Injection?
SkiDoo in the pic but I dunno. To be honest I haven’t kept up since I raced back in the 80s. 440 SRX Super mod II and 340 Modified. Hell, the “wife” sleds today stock have more power than my race sleds did! And we thought THEY were fast. (well they WERE...but still) ;)
I believe the Yamaha is a 4 stroke engine, lower RPM but its being discussed as having more reliability and actually better fuel mileage. And with the very harsh trail with lots of ice and frozen dirt it may not be speed that wins but a more rugged engine frame, without some loose snow the tracks will burnt up, they make “ice scratchers” but they won’t last long at those speeds, I have installed several kits on friends sleds here in Alaska.
Arguably the two cycle engines like the Rotax are the performers but maybe this year the Yamahas will last longer, just my race prediction.