Rancho RS551830 Loaded Strut Assembly Features:

• Increased performance on and off the road
• Exclusive rebound valving system and advanced compression phase
• Each application-specific coil spring is precisely calibrated
• Fit-tested, and engineered to restore the factory ride height
• Custom-tuned progressive engagement valving
• Reduce ride harshness and initial impacts at low speeds
• Nitro-carburized piston rod for scuff and corrosion resistance
• Double-welded loops at stress points
• Sintered iron piston for increased structural integrity
• Nitrogen gas-pressurized (60 PSI) to minimize the air-to-oil mixture
• Nitrogen filled to reduce damping fade and foaming