High-quality fork oil seals in OEM quality, which distinguish themselves from standard oil seals made of NBR (nitrile rubber) by their exceptional and unique XNBR (carboxyl elastomer) material. This mixture 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 / Total height Article type: fork oil seals Outer diameter: 52 mm Features: Set Total height: 11.0 mm Main color: black Inner diameter: 38.0 mm