Arctic Cat 5639-530 - OEM Arctic Cat Part Number: 5639-530 Arctic Cat Semi-Synthetic Shock Oil is a great choice for servicing gas shocks on snowmobiles for all conditions. Engineered with a high viscosity index (VI) formulation. Provides superior, consistent performance in severe operating and racing conditions. Protects against wear, foaming, oxidation and corrosion. OEM Arctic Cat Shock Semi-Synthetic Oil 1 Quart Part # 5639-530.
