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: - Resistance to abrasion and high temperatures ARI Inge fork corresponds, both in terms of quality as well as the dimension of the OE quality. This results in the best possible sealing results in all road and weather conditions. The Inge fork used in everyday use, in racing or in vintage cars. Triumph at Fahrgest. N.