Product Jet SkiPiston Back 13001-3731 Piston-0.5 For Kawasaki Ultra 900 Item Number: 13001-3731 Description: Piston-0.5 You May Also Be Interested In 13001-3722-04 Piston-1.0 For Kawasaki 750 13001-3720-03 Piston-0.75 For Kawasaki 900 09-959 Piston Kit 09-718059 Exhaust Gasket For Arctic Cat