12-1 weisco 440

[holeshot19]

anyone running one of these of pistons in there bike

[quadman21]

It shouldn't be too much stress on your engine...as long as you do not deck your cylinder. You've read all the threads, if you don't deck the cylinder your not running a true 11:1 so a 12:1 not decked shouldn't be too bad. Someone correct me if I am wrong.
By the way, tell Terry Gregg he has a bullsye on his back...J/K. Actually, I feel it will be my next accomlishment if I can beat him. He's fast rider and a nice person. We swapped back and forth at Uncle lems.