With a 17" rear, I can't imagine any America rider pining away for a 18 or 19 tooth front sprocket, unless every direction you went was downhill. With a 200/70-16 Avon Venom rear, I ended up going with a 16/43 sprocket set, so my Speedmaster would accelerate as I was used to. At 1000 RPM in first gear using 16/42 s my bike was a little too high geared to be comfortable in stop and go as well as in parking lots. It's good there are choices available or I would have serious builders remorse going the Phat tire route. The bike has to end up being comfortable and safe in all aspects or some more changes are in order.
