King RS4516-BP7P 4.5 Race Bypass Shock 7 Tube Piggyback Reservoir 16in Stroke 1.25in Shaft

The King RS4516-BP7P Pure Race Bypass Shock is a professional-grade 4.5-inch diameter racing shock absorber designed for extreme off-road racing applications. This 16-inch stroke shock features a 7-tube external bypass design with a piggyback reservoir configuration, delivering position-sensitive damping and precise tuning capabilities for ultimate suspension control.

Key Specifications:

• 4.5-inch shock body diameter for maximum fluid capacity
• 16-inch stroke length for long-travel suspension systems
• 1.25-inch diameter induction-hardened, hard chrome-plated shaft
• 7 external bypass tubes (large 1.00-inch diameter) for position-sensitive damping
• Piggyback reservoir design for compact mounting
• Extended length: 43.125 inches
• Compressed length: 27.125 inches
• Replaceable Teflon-lined steel spherical bearing mounts on both ends

Pure Race Engineering:

Each King Pure Race bypass shock is 100% hand-built in the USA using precision CNC-machined billet aluminum components. The external bypass design offers independently adjustable compression and rebound tuning at multiple stages throughout the shock stroke. The bypass valves feature 14 turns of precise adjustment and are made from heat-treated stainless steel for consistent, fade-free operation. The piggyback reservoir provides increased oil and gas volume for improved consistency and reduced fade during extended racing sessions.

Professional Quality Construction:

The shock shaft is induction-hardened to 60-65 Rockwell, hard chrome-plated, and micro-polished to a 3 RMS mirror finish for exceptional durability and seal integrity. The shock tube is precision-bored and honed to within +/- .001 inch for optimal piston seal and flow characteristics. All bypass ports are CNC-drilled, hand-deburred, and polished before bypass tubes are aircraft-quality TIG welded. Universal fitment for custom race applications; not vehicle-specific.

What's Included:

Factory hardware including all necessary washers, bushings, and mounting nuts (factory shock mounting bolts are reused for installation).