King RS4518-BP5P 4.5" Pure Race Series 5-Tube Bypass Shock 18" Stroke Piggyback Reservoir

The King RS4518-BP5P is a premium 4.5-inch diameter Pure Race Series bypass shock designed for extreme off-road racing applications. This high-performance shock features a 5-tube bypass configuration with an integrated piggyback reservoir and an 18-inch stroke length, delivering exceptional damping control and position-sensitive tuning for demanding race conditions.

Key Features:

• 4.5-inch shock body diameter with 18-inch stroke for maximum travel capability
• 5-tube external bypass design provides independent tuning at each compression and rebound stage
• Piggyback reservoir configuration for compact mounting while maintaining increased oil capacity
• 1.25-inch diameter shock shaft induction hardened to 60-65 Rockwell scale, hard chrome plated and micro-polished to 3 RMS mirror finish
• Precision-bored aluminum shock body with CNC-drilled and hand-deburred bypass ports, TIG-welded by certified welders
• Heat-treated stainless steel bypass valves and springs deliver 14 turns of precise adjustability with fade-free operation
• Cold-drawn 2024 billet aluminum piston with advanced fluid dynamics port design
• Teflon bronze wear band pistons and Viton O-ring seals for sustained high-temperature performance
• Threaded aluminum reservoir end caps withstand higher pressures and simplify maintenance
• Replaceable Teflon-lined steel spherical bearing mounts at both ends
• Hydraulically-pressed and TIG-welded rod end attachment with proven 13+ year track record

Each King Pure Race bypass shock is hand-built in the USA with strict quality controls and tight tolerances. The position-sensitive bypass tube design allows compression tubes to operate independently from rebound tubes, giving racers unmatched control over suspension characteristics. Factory hardware including washers, bushings, and nuts are included for installation. Backed by King's 90-day manufacturer warranty against defects.