Torco RFF 15 Racing Fork Fluid Bottle - 1 liter is a series of high V.I. synthetic blend fluids designed to exceed the demands of all cartridge and damper rod applications. The RFF maintains viscosity providing consistent damping under the most severe temperature conditions. A proprietary additive system features the best anti-stiction, anti-friction and anti-wear technology. The RFF is treated with special anti-foam, seal conditioners, anti-oxidation and corrosion inhibitors for long term durability and component life. It is recommended for use in all cartridge and conventional (damper rod) fork applications. It exceeds manufacturers' performance requirements.