Topic: Piston rings????

[co425]

Hey all is there a difference between 69 750 rings and 71 to 76 rings. I need set for my 69 but the fit shows for 71 to 76. Can't think of a reason for them to be different. Also anyone have a good site to get rings at a good price for all 4 pistons in standard size. Late

[bryanj]

Accordibg to the very early parts book i have there were different part numbers for the CB750, CB750K1 and the K2-K4 same as pistons so i suspect the earlier years are different especially as the pistons superceed to the later number but the rings do not.

The early manual (1970) that i also have makes no mention of land width only ringe end and side clearance

[co425]

Cool thanks for the info. I guess I will have to hunt down 69/70 piston rings as I am running the stock pistons.

[co425]

Just looked up the parts fisch and it shows the old rings are superceded by the new ones so I am assuming the 71+ rings with the same part number will fit.

[Jerry Rxman Griffin aka MuthaF'er]

Use your engine serial number to help. Provided the pistons have not been changed that should make it work. Then you'll know the superceded part will work.

[co425]

Original pistons. So I should be good. Ordered them from z1 for 13 and change a set. Should do the trick. Thanks for the help.