SLIDEmoto YZ-F Rear Wheel Conversion Spacers Conversion Wheel Spacers allow you to use the 2009+ YZ250F/YZ450F rear wheel (with 25mm bearing ID) on the YZ/WR models that still use the smaller 22mm rear axle. (Only or select brands of wheels, see details below!) CNC machined from 6061 aluminum. Anodized finish provides a durable finish to protect against the friction of the dust seals. FITMENT DETAILS: You can use these rear wheels, from 2009+ YZ250F or YZ450F: OEM Yamaha Aftermarket Direct Drive: Kite, KKE, Tusk, Warp9 (any that use OEM wheel spacers) DOES NOT work with Talon or Haan hubs, Marchesini forged, Warp 9 forged, or any other aftermarket hubs/wheels that use their own unique wheel spacers. You can mount the 2009+ YZ-F rear wheel (25mm) on these bikes: WR 250F, 2001+ WR 400F, 1998-2000 WR 426F, 2001-2002 WR 450F, 2003+ YZ 125, 2000+ YZ 250, 2000+ YZ 250F, 2001-2008 YZ 250FX, 2015+ YZ 250X, 2016+ YZ 400F, 1998-1999 YZ 426F, 2001-2002 YZ 450F, 2003-2008 YZ 450FX, 2016+