advantage of high compresion piston

[6858-400ex]

what is the highest compr

[mojoe2878]

with just the piston alone, not really.
with the piston and a good cam, a stage 1 or 2 or a web cam, then yes.
but the higher compression you go the the more reliabilty you will lose. i dont suggest goin past 11:1 with a stock rod, although its good insurance to get a HD rod with even that, any thing above 11:1 its pretty mucha must on the HD rod.

[frosti108]

well ive been running 11:1 with the stock rod for a loong time now and its doin fine...

[hondarider2006]

If your going with a higher revving cam, than a higher compression piston will make up for the lose in the bottom end. So pretty much the more compression, the more bottom end and tourqe, just less reliable:(