Kawasaki Ninja EX400cc Overbore 2 mm Piston Rings Only

Description Kawasaki Ninja 400 421.81/2mm over piston rings form the critical seal between the piston and the cylinder wall. A delicate balance exists between proper sealing for maximum power and minimum blow by, and the correct amount of pressure on the cylinder wall to minimize drag which can lead to power loss and excess wear. Additionally the rings help to carry oil up and down the cylinder wall. Fresh rings are a key component when building a high performance engine. We offer a selection of rings for every piston style and diameter. If you are unsure what rings you require for your stock or overbore pistons, please contact us before ordering. Kawasaki Ninja 400 421.81/2mm over piston rings For 72.00mm Spears Racing 2mm A direct replacement for the Spears Racing Piston Design FOR USE IN CAST IRON AND NIKISIL CYLINDER BORES Spears Racing has been designing and making race products for decades, their continuous committed to excellence to advance as the industry changes. This commitment has resulted in more components specific to certain applications, proprietary products only manufactured  for us. Each of these aspects has been put through stringent research and development stages to ensure that our product will exceed your standards.