RFX Pro Wheel Spacers Front (Blue) FXWS6010099BUPro Series Wheel Spacers RFX Pro Series wheel spacers are lighter and more durable than OEM. Constructed from 7075 T6 aluminium and colour anodised to increase durability. This helps to reduce surface wear and lessens the amount of dirt entering the hub which in turn extends the life of the bearing. Designed with a rear lip to help keep them hooked into the seals, this reduces the chance of falling out during maintenance, speeding up wheel changes.