King RS4516-BP4H 4.5 Race Series 16in Bypass Shock 4-Tube Hose Remote Reservoir 1.25in Shaft

The King Shocks RS4516-BP4H is a 4.5" Pure Race Series bypass shock absorber featuring a 16-inch stroke, 4-tube bypass circuit, and a hose-connected remote reservoir. Designed and hand-built in the USA, this shock is engineered for serious off-road racing and high-performance pre-runner applications where precise, position-sensitive damping control is essential.

Key Features:

• 4.5" body diameter for superior oil volume, heat dissipation, and fade-free performance
• 16" of stroke for maximum suspension travel in demanding off-road builds
• 4-tube bypass circuit with hose-ported remote reservoir for position-sensitive damping control across the full stroke
• 1.25" shock shaft induction hardened to 60–65 Rockwell, hard chrome plated, and micro-polished to a 3 RMS mirror finish for superior seal integrity and rock-strike resistance
• Large 1.00" bypass tubes for accurate flow control and broad adjustment range
• Proprietary rod end attachment — shaft hydraulically pressed through a threaded bung and TIG welded, eliminating external threads for exceptional strength
• Replaceable Teflon-lined steel spherical bearings on both mounting ends
• Threaded reservoir end caps to withstand higher pressures and simplify maintenance
• Bypass valve springs manufactured from the same material as valve shims to minimize heat-induced fade
• Shock tubes honed after plating for precise tolerances and long service life
• Fully rebuildable and serviceable

King's bypass shock technology delivers complete control of high-speed and low-speed oscillations through position-sensitive damping — no matter the terrain or load. Every King Shocks product is developed and validated through real-world competition testing at the highest levels of off-road racing.