Designed for years of service even in the dirtiest riding environments. OE Spacers typically wear out within a year of hard riding. OE wheel spacers should be checked and replaced as needed with every wheel bearing change. 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 allowing water and dirt to pass through and contaminate the bearing. The AB aluminium spacers feature a hardened steel shell pressed over the aluminium to provide superior wear surface. The AB steel spacers are manufactured with 52100 bearing steel that is through hardened and precision ground and plated for years of service.
Fits: Yamaha WR250 Z 3RB 1991-1993 WR250 Z 4JW 1994-1997 WR250Z 1998-2003 WR400F 1998 YZ125 1988-1989 1991-1992 1994-1998 YZ250 1988 1991-1996 1998 YZ400F 1998