Thanks for the calculating app. I saved it for future reference. My TA is currently stock with a 17 front and 42 rear sprocket. The 865 SMs are 16/43 stock. Anyway, it looks like the rpm drop may be less than I was told. According to the calculator, I would drop 250 rpms at my present 4500 and gain 5 mph if I held the 4500 rpm. That's still very significant. I just want to be sure I still like the bottom end. Right now I really want to loose the urge to shift over sixty.
