King RS4020-BP5P 4.0x20 Inch 5-Tube Bypass Shock Piggyback Reservoir

The King RS4020-BP5P is a Pure Race series bypass shock engineered for extreme off-road racing applications. This 4.0-inch diameter shock features 20 inches of travel and a 5-tube bypass design with piggyback reservoir, delivering unmatched performance and adjustability for demanding terrain.

Key Features:

• 4.0-inch shock body with 20 inches of travel for maximum articulation
• 5-tube bypass design with 1.25-inch induction-hardened shaft and large 1.0-inch bypass tubes
• Piggyback reservoir with threaded end caps for high-pressure capability and easy maintenance
• Position-sensitive valving with 14 turns of precise adjustment per bypass stage
• Independent compression and rebound tuning—each bypass stage operates independently
• Heat-treated stainless steel bypass valves and springs for fade-free performance
• CNC-drilled bypass ports, hand-deburred and TIG welded by certified welders
• Precision-bored shock tubes within +/- .001 inch for optimal piston seal and flow characteristics
• Hard chrome-plated shaft with 3 RMS mirror finish for superior durability and seal integrity
• Teflon-lined steel spherical bearings at both mounting points
• Hand-built in the USA from aircraft-grade aluminum construction

King Pure Race bypass shocks are custom-built for serious racing applications, offering professional-grade damping control and the proven durability that has made King Shocks the choice of top off-road racers worldwide. Fully rebuildable and serviceable for long-term performance.