FleetLine Shocks – Commercial Truck and Trailer Shocks (85000 series) - Added durability makes the Fleetline™ 85000 series the standard heavy duty product for today’s low friction suspension. Designed as a direct replacement for the original equipment shock, FleetLine shock absorbers by Gabriel® provide a valving rate that compensates for initial truck suspension softening, providing performance that better matches the original ride. Built with original equipment quality components and 10 stage valving to ensure superior performance throughout the life of the shock, it also reduces wear and tear on other costly suspension and vehicle parts. And like all Gabriel shocks and struts, FleetLine shocks feature a super-finished chrome piston rod for superior corrosion resistance and a leak-proof piston seal which extends product life. Unique pressurized piston seal design reduces force-velocity variabilities and self compensates for wear. Cold formed, 360 degree arc-welded eye-ring and mounts and a 1 5/8” bore provide improved durability. A hydraulic rebound stop, where required, prevents shocks from topping out and suspensions from overextending. Larger 1 5/8” bore supplies improved durability and greater tensile strength for harsher operating conditions. Bulged design provides increased fluid capacity and cooler operation in extreme conditions (85300 & 85700 series). Solid steel eye rings & 360° arc-welded end mounts deliver tough tensile strength that reduces end mount failures. Chromed piston rod to inhibit corrosion, ensure proper seal lubrication and provide a more consistent wear surface. Anti-corrosion end mounts to inhibit rust & corrosion. Durable piston seal design. Formulated shock oil for exceptional anti-fade performance.