Fork seals should be replaced at the first sign of oil appearing on the fork stanchion tubes. Our fork oil seals from Japan are top branded, of the highest quality and offer the same or better performance and fitments as original equipment fork seals. Sold in pairs (one for each fork leg), we have fork seals and fork dust seals to fit almost any model ever made from classics to modern bikes. Please refer to your service manual when changing fork oil seals