Sea-Doo › Sea-Doo 900 Top End Rebuild Kit (.75mm Over, 74.75mm) Image 1 of 1 Sea-Doo 900 Top End Rebuild Kit (.75mm Over, 74.75mm) $565.43 High-quality rebuild kit with .75mm oversize pistons for restoring engine performance and sealing. Add To Cart Added! High-quality rebuild kit with .75mm oversize pistons for restoring engine performance and sealing. You Might Also Like Sea-Doo 900 Top End Rebuild Kit (.25mm Over, 74.25mm) $565.43 Sea-Doo 900 Top End Rebuild Kit (.5mm Over, 74.50mm) $565.43 Sea-Doo 1503 4-Tec Top End Rebuild Kit (.5mm Over) $546.83 Sea-Doo 580 Top End Rebuild Kit (.25mm Over, 76.25mm 1992-1996) $180.20 Sea-Doo 580 Top End Rebuild Kit (.5mm Over Platinum, 76.50mm) $258.46