King Shocks 12in. 4.0 Race 5 Tube Bypass Piggyback Res 1.25in. Shaft Large 1in. Bypass Tubes

King Shocks is well-known for building high-performance suspension components for off-road racing and extreme use. This 12-inch 4.0 Race 5 Tube Bypass Shock is a prime example of their commitment to advanced suspension tuning. It's designed for custom builds where precise control over damping is essential, allowing you to fine-tune your vehicle's handling across varied terrain.

This bypass shock features a large 1.25-inch diameter shaft for strength and a 4.0-inch diameter main body to house a substantial amount of oil for consistent cooling during hard use. The standout feature is the five external bypass tubes, each independently adjustable. These bypass tubes allow you to bypass the main piston in specific zones of the shock's travel, giving you the ability to soften the compression or rebound in areas like bottom-out or initial bump, without affecting the overall damping curve. This level of adjustability is crucial for optimizing ride quality and performance on demanding off-road courses or during high-speed desert runs.

The piggyback reservoir is mounted directly to the shock body, which helps keep the overall package compact while providing additional oil capacity and cooling. This reservoir also houses the adjustable bypass valves, making them easily accessible for tuning. The large 1-inch diameter bypass tubes themselves are a notable feature, offering a significant range of adjustment. This shock is intended for custom suspension setups where the builder has a clear understanding of suspension dynamics and desires the ultimate in tunable performance.