High-quality, fully synthetic suspension oil for suspension forks and shock absorbers on bicycles. Additives to reduce friction, maintain seals and a unique formulation designed to meet the needs of front wheel riders.Supplied in color-coded viscosities of 2.5wt, 5wt, 7.5wt, 10wt and 15wt. The viscosities can be mixed to achieve the desired function. Recommended by FOX Racing Shox for use in FOX forks and shock absorbers..