Per Victory's accessories web page, the "Speedometer Feature Upgrade" [part number 2878478] unlocks the sppedo to provide the following: second trip meter, tachometer in the LCD, average fuel economy, instantaneous fuel economy, trip time, volt meter, ambient air temperature (requires external sensor PN: 2875949, sold separately). This upgrade works on all 2007-2010 Vegas, Hammer, and Jackpot motorcycles, but it does NOT work on Kingpins. Given that all 2007-2010 Vegas, Hammers, Jackpots, and Kingpins use the same speedometer instrument [part number 3280454], can anyone explain why the upgrade won't work on the Kingpin?