High-quality fork oil seals in OEM quality, characterized by their exceptional and unique XNBR (carboxyl elastomer) material compared to the standard NBR (nitrile rubber) oil seals on the market. This compound offers excellent wear resistance and temperature stability and is resistant to the oils and additives used in modern motorcycle and scooter forks. A sachet of special grease "Arisil" is included to extend the lifespan of the various components. Dimensions (mm): Inner diameter x outer diameter x mounting height / total height Inner diameter 40.0 mm Outer diameter 52 mm Set properties Main color black Mounting height 10.0 mm Total height 10.5 mm Type/kind of item Fork oil seal version