Per piston.

Rich

 

Ok, well lets put a little more twist on this subject; Ive got rods that are about 590g each as compared to the stock 603, and pistons that are 514g compared to the stock 532. Same question as before, can I get away w/o re-balancing? Im guessing no, BUT since most of the rod weight diff. would likely be in the big end im wondering if it would affect balance as a piston being at the end of the rod?

 

That is off too much.

Rich

 

Just agreeing with the guys that are saying you can go a little lighter.