Vance & Hines Throttlepak Throttle Management System for 2008-2013 Harley David Brings back the quick throttle response lost in throttle by wire (TBW) One twist of the throttle and riders will notice the improved response and acceleration Works on any bikes configuration; stock, modified and any exhaust combination Possibly the easiest performance mod ever; installs in minutes, simply plug into factory connectors Made in the USA