All Balls Wheel Spacer Kit Front Yamaha YZ250F/450F 19-22

OE spacers typically wear out within a year of hard riding. OE wheel spacers should be checked and replaced as needed with every bearings service. Water and dirt act as a grinding compound between the seal face and the mating surface of the spacer. Once the grooves are deep enough, the sealing surface is lost. Once the grooves are deep enough, the sealing surface is lost, allowing water and dirt to pass through and contaminate the bearing.