King RS4016-BP3P 4.0 Race Series 3-Tube Bypass Shock with Piggyback Reservoir 16" Travel

The King RS4016-BP3P is a 4.0-inch diameter Pure Race Series bypass shock engineered for extreme off-road racing and high-performance suspension applications. This premium shock absorber features 16 inches of travel with a 3-tube external bypass design that provides position-sensitive damping for superior control over challenging terrain.

Key Specifications:

• 4.0-inch shock body diameter for maximum fluid capacity and heat dissipation
• 16-inch stroke length (compressed length: 27.310 inches, extended length: 43.310 inches)
• 3-tube external bypass configuration with large 1.00-inch bypass tubes
• Piggyback reservoir design for compact mounting and reduced hose routing
• 1.25-inch diameter shaft with induction hardening and hard chrome plating
• Threaded reservoir end caps for high-pressure applications and easy maintenance

Advanced Construction Features:

• Shock cylinders precision bored to +/- 0.001-inch tolerance and honed after cadmium plating
• Shock shaft induction hardened to 60-65 Rockwell scale and micro-polished to 3 RMS mirror finish
• CNC-machined bypass ports that are hand deburred and polished for consistent flow
• 17-4 stainless steel bypass valve springs for temperature stability
• Teflon-lined steel spherical bearings at mounting points
• Lightweight aluminum reservoir construction with superior heat dissipation

Performance Benefits:

• External bypass tubes deliver progressive damping curves that eliminate harshness over bumps
• Position-sensitive damping provides complete control of high-speed and low-speed oscillations
• Large 1.25-inch shaft diameter offers exceptional strength and rock bruising protection
• Piggyback reservoir reduces installation complexity while maintaining optimal gas volume
• 100% hand-built in the USA with race-proven components

The King RS4016-BP3P represents the pinnacle of bypass shock technology, combining precision manufacturing with decades of off-road racing experience. This shock is ideal for dedicated race vehicles, pre-runners, and serious off-road builds requiring the ultimate in suspension performance and durability. Universal fitment for custom race applications.