SKF Seal Kit Fox 40mm fits 2005-current forks Compound is compatible with a wide range of fork oils and is engineered to withstand cracking from UV light The seal kits consist of two oil seal-dirt scrapers, crush washers and pre-impregnated foam rings Compared to OEM seals, SKF seals provide reduced friction, longer life and reduced air suction into the forks lower leg assembly The same self-lubricating compound as on SKFs motorcycle fork seals SKF's seal kits are constructed of a low friction material that reduces the breakaway force in your shock and allows it to be more reactive.