A New Replacement RCMAX GT 40mm Piston kit.
NB: CHECK YOUR CURRENT PISTON TYPE IF UNSURE WHICH TO ORDER.
If Athena piston, it will have a plain top with Triangle to show exhaust port side. If RCMAX GT Piston, it will have RCMAX stamped on the top and an arrow pointing to exhaust port side.
Must order the correct one for your cylinder deck height. Please get in touch if any doubt.