Was there a redesign/update to the front shaft on the LR3 or maybe an update with the LR4? I noticed two styles in my searching. One has varying thickness from end to end, at about the middle. Then I also see a straight shaft that looks about the thickness of the thinner part of the other design.

 

Maybe LR updated the rating of it. Are there two different part numbers as one maybe the RRS one

 

You could be correct, but they seem to share the same part number. I will have to dig further.

 

I could see the LR4 one being stronger to cope with the extra power but it seems like most components didn’t get any upgrade for the 5.0 so it’s a guess at best

 

Just bumping this incase anyone has any new thoughts. I am ordering a prop shaft so I am still curious.