BMonroe 32290 Monro-Matic Plus Shock Absorber ReviewbP PP Monroe 32290 Monro-Matic Plus Shock Absorber PAll Weather Fluid: Contains special modifiers to reduce friction and ensure smooth rod reactionP1-316" Bore: Larger bore than most shocks to provide more efficient and consistent controlPNitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aerationP12" Diameter Piston Rod: Nitrocarburized rod for long service lifePSpecial Seal: "Self-lubricating" fluid seal designed to retain gas without excessive wear or frictionP