Latest generation piston from ZCI. Slight manufacturing improvements over the previous model. Seems a better grade and cut for the metal rack. The outer body is made from nylon mixed with a fibre material to provide the extra strengthening. There are 14 teeth with the 2nd tooth missing for any AOE adjustments. The body is hexagonal with slight groves in the running rails. The rack comes firmly glued down
All come with a "black" heat treated tooth rack for improved strength. Piston body colour may vary, generally black, red or blue.
Well priced for a full steel reinforced 14 tooth piston. As with all ZCI products these don't come with any packaging, just a small plastic zip lock bag.