Drivetrain I completely agree, exhibit A the belt issue on some of them.
Not to highjack this thread, or defend brands of any kind, I rode a TApex for 4 years, but just for some clarification there is no Super Chute 275 kit. That is a Big Chute, which is the stock turbo recartridged with a bigger compressor. Not sure if you were talking about my buddy Evan's 1100 that you tried to get to work last year. I know all the BC kits in canada so I'd be interested to know who's that was.
Just like any brand when not running correctly there isn't much to compare or brag about. I ride with t-nitros too, they run great. There are also plenty of great running Evo kits out there and a BC275 kit is every bit as good powerwise as any 270 kit on a Nitro I seen or rode. Most just find the chassis easier to ride. I know I did that's why I snow checked one before I became a partner in a dealership.
I have done over 30 Evo kits in Western Canada this year. One of my SC290 customers just got back from Revy with his group of 270, 290, 310, and Nypex buddies. His doesn't have a belt problem. Did have some chain jumping on the last day thou. His group were all very impressed with power, power delivery, and lack of lag that we all live with on an MCX. I had one, I know. His buddies probably aren't going to come on here and rave about the Cat they rode with lol. I believe they ran into Duke one of the days. My Cat buddy hasn't rode in 2 years due to some medical issues and last rode an XP so by his admission he's a little out of riding shape.
As a side note both Julio and Trennis from Thunderstruck are both riding 1100's with BC275 kits and love them, other than Julio's belt, but we believe we have the solution for that. There's a couple guys that have some seat time on the Yami. Won't be any hiding sub par performance on film.
Again, sorry for the highjack, just felt a fair shake was in order. I'm not a brand guy, I'm a 4s guy. I personally am exicited about what might be colaborating between these two companies.