The serial number breakdown is: 1HFSC53J34A000114 1st tru 7th1HFSC53 World Manufacture Number - Model The 8th character J - breaks the bike in spec groups 0 - 49 State - DA bikes - Spec 47 / Forward Bars 1 - Calif. - DA bikes - Spec 47 / Forward Bars 3 - 49 State - DB bikes - Spec 47 / Rear Bars 4 - Calif. - DB bikes - Spec 47 / Rear Bars 5 - Canadian - DB bikes - --- 04 bikes - Illusion Blue Spec 47 / Rear Bars --- 05 bikes - Black Cherry / Spec47 / Rear Bars? 6 - 49 State - EA bikes - Chrome / Forward Bars J - 49 State - EB bikes - Chrome / Rear Bars K - California - EB bikes - Chrome / Rear bars U - Australia - DA/B ? bikes - Spec 47/ Forward Bars/Rear Bars The 9th character 3 - is a ID check digit and only used to "total the VIN number. The 10th character 4 - is the year code 4-2004 ... 5-2005 The 11th character A - is the plant code 12th - 17th character 000114 - sequ. production number. 2005 start with a 100??? The Model Code breakdown - NRX1800DA4 NRX1800 - HONDA Model D - Spec 47 Wheels E - Chrome Wheels A - Forward Bars B - Rear Bars 4 - 2004 5 - 2005