defference between HRC end cap and stock one?

[ranger400ex1994]

whats the difference between them? i see the HRC has a spak arrester is that it?? when i pulled the stock baffle out of my 05's muffler the end cap look about the same.

[KRMit]

I dunno about the '05 HRC but the '06 is just a different spark arrester (or baffle). You re-use the stock end cap.