| Im also looking for a fat rear end to start from, look at either an ATV rear wheel or think about having one machined up (try dragway wheels)...
Other than that, the smallest rear you will get will prolly be around 120/50/xx
not really a fat tyred wheel
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Bikes:
2005 bravo X9 50cc
2006 bravo X9 110cc
http://www.gabgrafix.com - Custom Paint & Airbrushing | 
