PJ1 Fork Tuner Fork Oil Consistent, smooth damping action in all temperatures to fine tune your ride for personal preference. Formulated for non-foaming and non-fading properties. Features High Viscosity Index (Hvi) fork oils formulated to provide consistent performance over a wide temperature range An effective and inexpensive method to tune conventional fork compression and rebound without hardware modifications Accommodates different rider weights and conditions Contains anti-foam agents to prevent aeration and maintain predictable compression and rebound in a challenging environment Additives maximize fork seal performance