Skyjacker Front Dual Rate Long Travel Coil Component Box

2021–2024 Jeep Wrangler 6.4L 392

Part #: JLUR453FDR

Overview

The Skyjacker Front Dual Rate Long Travel Coil Component Box is engineered specifically for the 2021–2024 Jeep Wrangler equipped with the powerful 6.4L 392 engine. Designed to enhance both off-road capability and on-road comfort, this coil spring system delivers exceptional suspension performance through its innovative dual rate design. Ideal for Jeep enthusiasts seeking improved articulation and ride quality, these coils provide the perfect balance between rugged terrain handling and smooth street driving.

Skyjacker’s precision engineering ensures that your Wrangler maintains tire contact with the terrain during full suspension droop, while also offering a comfortable and controlled ride on pavement. This component box is a comprehensive upgrade for those looking to maximize their Jeep’s suspension travel without sacrificing daily drivability.

Key Features

Skyjacker’s Front Dual Rate Long Travel Coil Component Box incorporates advanced technology and thoughtful design to meet the demands of serious off-roaders and street drivers alike. Key features include:

• Progressive variable rate coil spring with a unique 2-stage dual rate long travel design
• First Flex Rate stage provides comfortable ride and full articulation capability during suspension droop
• Second Ride Rate stage engages under compression beyond the Flex Rate for added support
• Constructed from 5160H chromium alloy steel for superior strength and durability
• Advanced shot peening process increases tensile strength by compressing the steel surface
• Preset solid height eliminates spring sag and reduces fatigue for long-lasting performance
• Durable baked-on powder coat finish protects against corrosion and wear
• Cycle tested to ensure consistent quality and reliability under demanding conditions

Construction & Design

Each coil spring in this component box starts with premium 5160H chromium alloy steel, known for its excellent toughness and resistance to fatigue. The springs undergo a specialized shot peening process, where high-velocity steel pellets compress the surface, significantly enhancing tensile strength and durability. This treatment ensures the springs can withstand rigorous off-road use without compromising performance.

The preset solid height feature is a critical design element that removes stress from the spring by compressing it fully during manufacturing. This process prevents sagging over time, maintaining consistent ride height and suspension performance. The entire assembly is finished with a baked-on powder coat that provides a robust barrier against rust and environmental damage, ensuring longevity in harsh conditions.

Installation & Fitment

Designed as a direct fit for the 2021–2024 Jeep Wrangler 6.4L 392, this coil component box installs easily with standard suspension tools. No major modifications are required, making it an ideal upgrade for enthusiasts looking to improve their vehicle’s suspension without extensive customization. Proper installation ensures optimal spring seating and suspension articulation, preserving factory geometry and handling characteristics.

What's Included

• Front dual rate long travel coil springs
• Component box with all necessary coil springs for front suspension
• Installation instructions

Ideal For

This Skyjacker coil component box is perfect for Jeep Wrangler owners who demand enhanced off-road articulation and superior ride comfort. Whether tackling rocky trails, navigating uneven terrain, or cruising on highways, these springs provide the versatility and durability needed for serious off-road adventures and everyday driving. Enthusiasts upgrading their suspension for improved handling and longevity will find this product an excellent choice.

Skyjacker is a long-running off-road suspension brand offering lift kits, shocks, steering stabilizers, and related components for trucks, SUVs, and Jeeps. Built to increase clearance for larger tires and improve trail capability, Skyjacker systems are popular for enthusiasts who want a tougher stance and more off-road confidence with proven application coverage.