z400 big bore?

[pastfast125]

theres a high comp piston kit in the classifieds for a z400, 92 mm piston, stock is 90..the guy said I don't have to resleeve for this psiton..other people have told me it's bad news to do it without resleeving, I just wanna hear some opinions

[pastfast125]

anybody know anything about it?

[2muchquad]

unless your doing some serious racing such as drag with a 15 to 1 piston running alcohol then there might not be enough meat left on the stock sleeve for reliability but for the average play rider you'll be fine.only thing is your overbores will be limited

[pastfast125]

will it really make a lot of difference in power, smebody told me I wont even feel it

[rooster300ex]

I bet you will feel a difference, but to get full potential out of it you should, pipe it,jet it, port & polish and then you will see a big difference.