Products › Sea-Doo 580 Top End Rebuild Kit (1mm Over, 77mm) Image 1 of 1 Sea-Doo 580 Top End Rebuild Kit (1mm Over, 77mm) $238.56 Complete rebuild solution for heavily worn cylinders requiring 1mm overbore. Restores power and compression. Add To Cart Added! Complete rebuild solution for heavily worn cylinders requiring 1mm overbore. Restores power and compression.