I guess it began as a 110cc.. That lasted less than a week. I bought the 140 from piranha apparently and not tbolt, but they've been helpful the whole time. I've have tried a vm22,24,26. Legit ones. He difference immediately noticeable vm22 to 24. They always seems finicky but likely due to pretty big elevation changes. I have a 14 tooth through 19t front sprocket. Never ever satisfied until the second I took off with the 19 tooth on. My rear is a 35 or 37 not really sure. They're harder to change anyways. I did dremel a tiny bit of external case for my Renthal chain to roll free, however, bolt the sprocket down before you spin the dremel up and you might not even need to. Or get like a 29t rear :p.
I have a z40 cam I have zero desire to install. It already has way too much low end I'm not really looking for more. Still wheelies like crazy 1st and 2nd with the 19 tooth. 14" front 12" rear. 17"extended swing arm. It's been a great engine and I do day dream about a 190cc or something but I'm definitely satisfied and that's never happened when it's involved hp.