Model number question

[Bluebullet]

I have a 2010 Apex LTX GT model # on my title is RX10LTGTZB. When I order parts I always order under that model # but what is the RX10LTGT ZL or ZW mean as listed other models ? Probably just different series run by manufacturing dates ? changes or upgrades? Parts list look the same?
Anyone have any info?
Thanks Terry

 

[erosled]

Z=2010 B=black L=blue W=white

 

[Bluebullet]

That's simple.. Thanks Ero