Pistons

[JSTTA]

Hi all, this has probably been gone over but what is the difference between the GN piston and the TTA piston. I want to start to collect another bottom end for a TTA. Is there part #'s for je or wisco pistons for the TTA or is it custom order. I was told the GN piston will up the compression in the TTA.
Thanks for any input..

 

[Razor]

Custom Piston. That is if you want to keep compression at stock levels.

HTH