what does this do

[bilko71]

http://cgi.ebay.com.au/kitaco-clone-inner-rotor-kit-for-110cc-to-140cc-motors_W0QQitemZ140122425688QQihZ004QQcategoryZ29705QQtcZphotoQQrdZ1QQcmdZViewItem
he everyone not really a tech guy but i was just woundering wat does this piece do and how much are they in shops and r they worth the money

 

[Meko]

Search the forum - IRK (inner rotor kit) there is heaps of stuff about em

 

[bilko71]

thanks man