"Here is a description and a few images of new pistons. Pistons with a 5/8" pin and fabricated according to the original 2797 Hepolite piston dimensions are being produced by a specialized manufacturer in the Slovak Republic - go to www.ceba.sk for more information. You will need to provide them with the exact cylinder bore. Pistons are supplied including three modern piston rings. Delivery time is around two months".