Extensive testing with fork oils of various manufacturers has shown differences of up to 50% in inner friction of telescopic forks. Bel-Ray High Performance fork oil is guaranteed to provide exceptional anti-friction properties. Available in three different viscosities.

30W was factory filling for all models up to 1978. FL models used it until 1984. 20W was standard filling later on. Bel-Ray fork oils can be blended for various viscosities.