A adrenaline junkey Free Member Nov 26, 2007 2,481 1,244 113 Heyburn Idaho Jun 28, 2009 #1 I'm going to upgrade the track to 2" challenger and i know i have to switch the drivers. But what size do i need? It has a 121 1 1/4 on it now. Thanks in advance.
I'm going to upgrade the track to 2" challenger and i know i have to switch the drivers. But what size do i need? It has a 121 1 1/4 on it now. Thanks in advance.