You can probably find Homelite rings, and for a few bucks less than from Frank Bowman. But Frank's rings are the best and will break in almost immediately and also give you noticeably more power, easier starting, etc. I don't use anything BUT Frank's rings in my engines any more.

If yours is a Homelite 25cc, the mod he does is to pin the ring which allows you to remove the exhaust port bridge which adds a lot of power to the 25cc Homelite.

AV8TOR