Raydawg
I went to investigate one of these befor I bought a S-40 to replace my worn-out Savage.
They are geared to top-out in the mid 80's ... or so the dealer said -(He was ridding one as his personal ride). The one the dealer was ridding looked good and had all the good stuff I would put on one.
Well , the rear sprocket is made into the hub , so when it wears out you just put a new hub on. The hub stayes on the bike when you take the rear tire off (as in easy flat tire repair). But all this means "You can't put a different size rear sprocket on it !
So ... That takes us to the front sprocket only two sizes are avalible either a 16 or a 17 tooth , the dealer allready had the 17 tooth on his and said , "That's why it tops out in the 80's instead of the high 70's .
:'(
If I could have geared it to top-out near 100 (as in cruse at 75) I might have tried to make a deal with him for one of them.
I replace the Savage with a 07 S-40 .