Compression and Pistons?

[Blue_SS]

hey guys im racing flayt track and my bike has 18cc domes wit noss head and i believe i had botu 175 psi in each when i first rebuilt it and now i got 155 and was wondering is that a big enough drop to rebuild? what would be a good compression number to run in flat trackin, i live in missouri, and i would like to know from yall what is th ebest piston to go with?

[itsmyforte]

i would not worry about the 155 just yet. i wouldn't rebuild until about 130. but if you need all the edge you can get then go right ahead.

i have always used Wiseco pistons, they never steered me wrong.