Patented fork seal features a balanced 3 lip design that evenly distributes the pressure reducing operating temperature, wear and friction. Custom Elastomer Fork Seals have been tested to outlast OEM fork seals. Extends typical seal life by 3 to 5 times over OEM seals. Stiction (friction) measures from 1/3 to 1/2 less than OEM seals for smoother fork action. Lower Stiction, Longer Life! It doesn't get any better than this! Sold in pairs.