Compared to other wiper seals “RacingBros” offer the lowest friction coefficient, guaranteeing maximum smoothness of the forks, the high quality material containing MOS2 graphite and Teflon PTFE particles and the particular shape are the result of many years of research / development in national and international competitions and millions test cycles on dyno test machine. The particular design of the external sealing lip guarantees greater protection against the entry of dirt, mud, water etc. compared to other wiper seals, and at the same time RacingBros seals are also made to offer a longer lifetime. Operating temperature between -25 ° C and + 80 ° C is guaranteed. The foam rings supplied in the packaging have a density of 25kg / m³, which guarantees greater oil absorption than other manufacturers' sponges.