90% or more of the performance gains are because of the 8 tooth drivers!!!!!!!!!!
You go from a 7t to a 8t is a great ratio change from 2.86 to 2.63.
No sled should ever be geared that f cling low, 2.63 is the limit. Plus the team clutch doesn't shift into as high of gear as the old cat clutches.
It's like groomer vs snowmobile, or 4L vs 4H.
My 14 cat with 8t and 3" with 2.42 still pulled harder than anything yet. But I had the clutching perfect.
The MC with different spring, helix and weights is the second best setup I've ever ridden.
Nothing I tried on my 16 with 7t felt right or even compared to the 17 MC or my 14.
But with gear change you have to calculate everything, it changes the location of the swing of the clutch weights and most don't clutch properly for gear changes.
Biggest thing you can do for the cat is just add 8t even if you don't drop the case. It's huge.
Aside from bmfab skinny boards and a 30lb diet. Add grippers of course. That setup will p:ss pound any of them.
For any of you broke riders, get a Speedwerx 155/310 spring and put in your 16-17 and learn throttle control. Massive improvement in response and full range power.
As for trenching, your an idiot to say the MC trenches. What you need is an education in throttle control, rider position, and suspension setup. No more trenchy.
Camber/Evol
Front shocks 60/150
Fts 35-50/110 powder 50-70/110 average/firm snow
Rts 120-135/250 (of your under 250 and not carrying bag or fuel in Tunnel) for ever 5lbs over 250lbs add 2psi.
Handle bar risers make it trench worse!
Lean forward, keep body low and weight forward.
Work the throttle to not wheelie, a quick release will often let it jump on top. To much to fast will trench.
In a climb it can be effective to tap the break if you anticipate a wheeling, hold the throttle down but smack the brake just enough to keep it on plane.
But really most of you will leann back, let her wheelie with a chit eating grin.
Let a real rider set them up and test them, then jump on and see if you can do the same.
99% of people can't figure out why there trenching when the other guy didn't.