View Single Post
Old 11-09-10, 10:53 PM
  #2  
Squirrelli
GONE~
 
Join Date: Apr 2010
Posts: 6,747
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
They are of two different kinds of spindle, RD one is JIS and the 75 is ISO. Sheldon's got an article about their interchangeability.

You need to change your spindle length according to what the new crankset need.
Squirrelli is offline