ARI fork oil seal kit The quality of their execution corresponds to the uniqueness of the material used (XNBR). The Inge fork offers unique features and are used in modern forks of motorcycles and scooters: – Abrasion and high temperature resistance ARI Inge fork corresponds both in terms of quality as well as size to the OE quality. This results in the best possible grip results in all road and weather conditions. The Inge fork used in daily use, in racing or in vintage cars. Triumph at Fahrgest. No.