What is the purpose of the bypass tubes on this shock?

The bypass tubes allow oil to flow around the main piston, giving you the ability to tune compression and rebound damping independently. This provides a much higher level of adjustability for different terrains and driving conditions.

How does the remote reservoir benefit the shock's performance?

The remote reservoir increases the shock's oil capacity and surface area for cooling. This helps prevent the shock fluid from overheating and breaking down, which reduces performance fade during prolonged, hard use.

What kind of applications is this shock designed for?

This shock is specifically designed for demanding off-road racing and extreme use applications where precise damping control, heat management, and durability are critical. It's built to handle severe impacts and high speeds.

King Shocks 4.0 Race Shock RS4018-BP7H

Name: King Shocks 18in 4.0 Race Shock 7 Tube Bypass Hose Remote Res 1.25in Shaft Large 1in Bypass Tubes
Brand: King Shocks
SKU: king-shocks-king-shocks-18in-4-0-race-shock-7-tube-bypass-hose-remote-res-1-25in-t14-320823
Price: 3118.57 USD
Availability: BackOrder

King Shocks 18in 4.0 Race Shock 7 Tube Bypass Hose Remote Res 1.25in Shaft Large 1in Bypass Tubes

$3118.57

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

King Shocks 4.0 Race Shock with 7-tube bypass and remote reservoir. Built for extreme off-road performance.

Key Features

Fits: Check manufacturer fitment data to confirm compatibility with your vehicle.
18-inch extended length race shock.
4.0-inch diameter shock body for effective heat dissipation.
Features a 1.25-inch diameter shaft for strength and durability.
Includes a 7-tube bypass system for advanced, tunable damping control.
Remote reservoir enhances cooling and oil capacity to prevent shock fade.

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Product Details

King Shocks is well-known for building some of the most robust and high-performing suspension components for off-road racing and extreme use. This 18-inch 4.0 Race Shock is a prime example of their dedication to pushing the limits, designed for vehicles that demand serious damping control in the harshest environments. It features a large 1.25-inch diameter shaft and substantial 1-inch bypass tubes, all housed within a 4-inch diameter body, which helps dissipate heat effectively during intense use.

What sets this shock apart is its 7-tube bypass system. This advanced setup allows for highly tunable damping characteristics, giving you precise control over how the suspension reacts to terrain. The bypass tubes route oil around the main piston, enabling you to adjust compression and rebound independently. This level of adjustability is crucial for optimizing performance whether you're hitting high-speed desert whoops or navigating technical rock crawling sections. The remote reservoir further enhances cooling and provides additional oil capacity, preventing shock fade even under prolonged, heavy-duty operation. The 1.25-inch shaft is strong and built to withstand the significant forces encountered in racing applications.

This race shock is a significant upgrade for serious off-road enthusiasts looking to fine-tune their suspension for maximum performance and durability. While installation requires specialized knowledge and tools, the ability to dial in your damping precisely makes it a worthwhile investment for competitive racing or extreme recreational use. It's built to handle the demands of the toughest off-road conditions, offering a level of control and resilience that standard shocks simply can't match.