Fox partnered with legendary seal maker SKF to develop their low-friction fork seals. This Fox Dust Wiper Kit is standard equipment on current Fox Forks, and these seals are what give them such a buttery smooth feel along with the Kashima Coat.
Forks are one of those things that get taken for granted when they're working as they should, and cursed when they're not. Most of the time it's our own fault for not doing the little things like changing the oil. The dust wipers are equally as important as they're the first line of defense from the grit and grime of the trail. Needless to say, it's a good idea to replace them when you do your oil. The Fox Dust Wiper Kit is available to fit all Fox Forks. Choose the set that corresponds with your fork stanchion diameter -- 32, 34, 36, or 40mm.
If you are rebuilding your Fox fork you need these. Wipers are fairly cheap to replace and will save you a lot of headaches in the future. Sizes are based on the diameter of your stanchions.
Rebuilt my fox fork at the beginning of the year and it is running much smoother then it was before. The new seals really made the difference.