R/C Tech Forums - View Single Post - What are the differences between xx-4 & xxx-4?
Old 03-21-2009, 09:12 PM
  #16  
wayboarder
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yup, check out the "Official XX-4 Thread."

I believe the discussion of it is on page 14 if you look back. But the CR rear end is a easy swap over on the xx4.
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