ARI fork seal kit The quality of their execution matches the unique nature of the material used (XNBR). The Inge fork offer unique properties and are used in modern forks of motorcycles and scooters: - Resistance to high temperatures and abrasion ARI Inge fork correspond 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 daily use in racing or in vintage cars.