Topic: honda cb 500 four cylinder bore

[kranta]

so, i just bought new standart size cylinder but i measured it and shows that it measurement is 56.10mm so what size pistons i should buy? should i bought 0.25 bigger pistons or should i buy standard size pistons?

[Skowinski]

Looks like you need to go up to first oversize, you're at the wear limit, here is from the Honda service manual.

http://i819.photobucket.com/albums/zz112/Skowinski/Honda%20CB500%20Restore/Service%20Specifications_zpszxp2m5k7.jpg