High-quality fork seals in OEM quality, which distinguish themselves from standard NBR (nitrile rubber) seals by their exceptional and unique XNBR (carboxyl elastomer) material. This compound offers excellent abrasion and temperature resistance, as well as resistance to the oils and additives used in modern motorcycle and scooter forks. Each delivery includes a sachet of "Arisil" special grease to extend the durability of the various components. Dimensions (mm): Inner diameter x Outer diameter x Installation height / Overall height Item description: Fork seals Outer diameter 55 mm Properties Set Installation height 7.5 mm Overall height 10.5 mm Main color black Inner diameter 41.7 mm