Red/Black piston?
 

Hi I'm looking to upgrade, when I go to a site it tells me this:
http://i144.photobucket.com/albums/r...all/piston.jpg

Is there any difference between the colours or is it merely cosmetic, and won't be seen?

This is what I get:

http://i144.photobucket.com/albums/r...all/piston.jpg

It's a color... it does not make any difference.

The red Systema pistons are better quality than their black ones. There is greater attention to the finish of the part, there are different materials used, and there is are some beneficial features of the red piston that the black one does not have. The black one is very very basic and is essentially a copy of the stock piston, but made with different materials.

TY
 

Thanks all of you, for the anser, details, and reminding me to fix my pic :P