Just got back from the first ride after fitting a 19 tooth front sprocket on my 13 America, I think this is the best mod so far, the bike still pulls off the line really well and ringing her out through the gears is a lot more fun. Will have to watch the speedo a bit more so I don't lose the brief. Cruising on the highway at 110 K's she's just purring,the long T.O.R.S are singing at 80K's in second and 95K's in third, just love this bike.Other mod's are A.I.removed,Oxygen sensors removed,K/N air filter Icon shockers and progressive fork springs.Cheers Eric