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 the 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 characteristics 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
• 14mm 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.