Topic: CB550/650 Piston Rings?

[campbmic]

Hi I'm currently looking for three more sets of rings for my 1975 CB550. This ebay listing is for a set of rings that fits 550s and 650s how is this possible? I thought the 550 pistons would be smaller then the 650.

http://cgi.ebay.com/ebaymotors/Honda-CB550-CB650-CB-550-650-PISTON-Rings-Genuine_W0QQitemZ280416705133QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item414a235a6d

Thanks

[bryanj]

1983-1985 That makes it a twin cam

[campbmic]

Ah thanks for pointing that out so they are definitely not what I'm looking for. Anyways just out of curiosity how can something that has a bigger CC engine use the same size rings as something with a smaller cc engine?

[cb650]

Change the stroke.