Looking to replace my oem chain on 03 America.
I understand it is an O-ring.
Bellcorse carries DID replacements O-ring.
New Bonneville carries DID replacement X-ring.

What's is the difference, and is one preferred over the other?
Mike

It's not speeding till you get pulled over.
https://www.youtube.com/watch?v=Bqa1s4jhkQ8