Millennium is proud to lead the industry in personal watercraft cylinder technologies. Whether you simply need your cylinder repaired back to stock, or you want to try something a bit more radical, we're definitely the right choice. We also have a large selection of remanufactured watercraft cylinders in stock for immediate exchange. Read about our Cylinder Exchange Program. Millennium Technologies has aided in the success of some of the best on the water. We can give you the edge you need to overcome the competition.