Originally Posted by R/C Rich

Cinq-

If you are using the short reversable suspension arms, you will need the 46mm drive shafts. I have the IFS-R, that has the short arms, and it uses the 46mm ones. Hope this helps answer your question.

Rich

part numbers:
53724 46mm Swing shaft blue aluminum (rear)
51092 46mm Swing shaft black steel (front)