Driven Clutch Spider Cracking?

[Boot]

What causes the outside of the driven clutch to apear cracked? I have seen this same appearance on a few of my past (Polaris) sleds as well.

What is it and should I be concerned?

 

[Turk]

casting marks...no biggee.

 

[Arnold08]

Im No expert as a snowmobile mechanic but I do Know quite a bit about Cars and i no that Hondas and saturns Cylinder heads and blocks are cast in Styrafome and ive seen this type of look on the cylinder heads and its not really anything to worry about..... Wether or not the cluctches are IDK i wouldnt think so but haha I wouldnt think subframes and A Arms would bend so easily..... Your GUESS is Really As good as MIne

 

[stopdropanroll]

casting marks...no biggee.

X2

 

[Boot]

casting marks...no biggee.

X2

Feeling Better thanks guys.