King RS4012-BP3H 4.0 Pure Race Series Bypass Shock 3 Tube 12 Inch Travel Remote Reservoir

The King RS4012-BP3H is a 4.0-inch diameter Pure Race Series bypass shock engineered for extreme off-road racing applications. This high-performance shock features 12 inches of travel with a 3-tube bypass configuration and hose-style remote reservoir, delivering unparalleled adjustability and control for serious racers and off-road enthusiasts.

Pure Race Series Technology:

• 4.0-inch shock body with 1.25-inch induction hardened shaft (60-65 Rockwell hardness)
• 3-tube bypass design with independently adjustable compression and rebound circuits
• 12 inches of shock travel for maximum suspension articulation
• Hose-type remote reservoir with threaded aluminum end caps
• 14 turns of precise valve adjustment per bypass tube
• Position-sensitive damping with no cross-influence between compression and rebound

Premium Construction Features:

• Heat-treated stainless steel bypass valves and springs for fade-free operation
• Hard chrome plated shaft micro-polished to 3 RMS mirror finish
• Precision bored and honed shock tubes (+/- .001 tolerance)
• CNC-machined 2024 billet aluminum piston with optimized fluid dynamics
• Aircraft-quality TIG welded bypass tubes with hand-deburred ports
• Teflon bronze wear bands and Viton o-ring seals for high-temperature durability
• Aeroquip hoses with superior temperature and pressure ratings
• Teflon-lined steel spherical bearing rod ends

Race-Proven Design:

Each King Pure Race bypass shock is custom-built to deliver competition-level performance. The bypass ports are CNC-drilled and hand-polished, then pressure tested to 300 psi before plating. The hydraulically pressed and TIG-welded shaft attachment method has proven 100% reliable in brutal racing conditions. King's proprietary piston design and deep understanding of fluid dynamics create the legendary ride quality and precise control that professional racers demand.

This shock is designed for custom racing applications where maximum performance, adjustability, and durability are essential. Ideal for desert racing, rock crawling, and extreme off-road competition vehicles.