Pro Comp Pro Runner SS Monotube Shock Absorber

The Pro Comp Pro Runner SS is a nitrogen gas-charged monotube shock absorber line engineered to deliver a meaningful performance step-up over conventional twin-tube hydraulic shocks. Designed for trucks, Jeeps, and SUVs that demand reliable performance both on pavement and off the beaten path, the Pro Runner SS line reflects Pro Comp's deep-rooted expertise in suspension engineering for on- and off-road enthusiasts.

Key Features:

• Gas-Charged Monotube Design — delivers superior damping performance over traditional twin-tube hydraulic shocks, with a single-tube architecture that enables more efficient heat transfer and reduced shock fade during sustained use
• Internal Floating Piston (IFP) — physically separates the nitrogen gas charge from the shock oil, eliminating performance-robbing cavitation during compression and rebound cycles for consistent, responsive damping
• Multi-Stage Disc Pack Valving — derived from extensive dyno testing and real-world validation, valving is tuned to optimize ride quality and handling for each specific application rather than relying on a one-size-fits-all compromise
• Enhanced Heat Dissipation — monotube construction transfers and manages thermal load more efficiently, drastically reducing shock fade during aggressive or prolonged use
• Chrome-Hardened Shaft — provides long-lasting durability and resistance to bending, corrosion, and abrasion in demanding environments
• Corrosion-Resistant Shock Body — brushed, zinc-plated, and clear-coated finish delivers long-lasting protection against the elements and trail debris
• Advanced Wiper Seal Design — redesigned seal keeps contaminants out and maintains a reliable fluid barrier to prevent leaks over the long term
• Polyurethane Shock Boot Included — protects the shaft and seal from dirt, rocks, and debris right out of the box

Every unit in the Pro Runner SS line is application-specifically tuned, with ride characteristics precisely calibrated for each vehicle platform. Whether towing a trailer on the highway or navigating demanding off-road terrain, the Pro Runner SS delivers genuine, repeatable performance across the full spectrum of driving conditions.