higher compression piston

[yamahahaha]

i am thinking of getting a high compression piston for my 09 yfz r, i am debating between gytr and wiseco... i know the 13.2 gytr and 14.1 wiseco require higher octane. which piston should i get?

[mxpimp2000]

wiseco,CP,JE

if ur goin over 12.5:1 ull need race gas. dont run anything less as it will cause detonation. i just went with a JE 13.5:1 in my bike. I have a wiseco 13:1 with about 10hrs max on it im not using id take $65 for it.

[ldjbuff]

CP's are one of the best pistons for the YFZ.

[LR93]

id say CP but thats my opinion....i personally dont like wiseco