Topic: Piston rings for a 1977 CB750A

[Ved]

I've done some searching but can't seem to figure out what are the right size piston rings for a 77 CB750A. Are they the same rings as a regular 750?

I found these in my searching .50 OS P/N 13031-392-000, and .75 OS P/N 13041-392-000  and .50 OS P/N 13031-405-601 All say they fit the 77 model CB750A

So which is it, .50 or .75?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220243041352&crlp=1_263602_263622&ff4=263602_263622&viewitem=&guid=f27f0b4712a0a075f50122f1ffff47e6&rvr_id=141519079867&ua=%3F*F%3F&itemid=220243041352

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220243031689&crlp=1_263602_263622&ff4=263602_263622&viewitem=&guid=f27f0b4712a0a075f50122f1ffff47e6&rvr_id=141482180647&ua=%3F*F%3F&itemid=220243031689

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220243077634&crlp=1_263602_263622&ff4=263602_263622&viewitem=&guid=f27f0b4712a0a075f50122f1ffff47e6&rvr_id=141514549930&ua=%3F*F%3F&itemid=220243077634

[MasterChief750]

unless you have oversize pistons you will need standard size rings. have you tried honda for rings

[zzpete]

Service Honda shows part # 13011-392-004 (std)
http://www.servicehonda.com/look-up-parts/03