KYB Strut-Plus Strut

2019 Ram 1500 Classic 4WD Diesel All Cabs

SR4550

Overview:

The KYB Strut-Plus Strut SR4550 is a premium front coilover replacement designed specifically for the 2019 Ram 1500 Classic 4WD Diesel models with all cab configurations. Engineered to restore your truck’s original ride height, handling, and control, this strut assembly offers a direct-fit solution that meets or exceeds factory specifications. Ideal for owners seeking to maintain the performance and safety characteristics of their Ram 1500 Classic, the Strut-Plus ensures a smooth, stable ride and precise steering response.

Unlike generic aftermarket struts, KYB’s Strut-Plus is tailored to the exact requirements of your vehicle, providing a reliable upgrade that preserves the integrity of your suspension system. Whether you are replacing worn-out components or restoring your truck to its original driving dynamics, the SR4550 delivers consistent performance and durability.

Key Features:

The KYB Strut-Plus Strut SR4550 incorporates advanced engineering and high-quality materials to provide superior suspension performance. Key features include:

• Corner-Specific Design: Each strut assembly is engineered with a unique part number for the front left or right side, ensuring precise fitment and optimal handling.
• In-House Assembled Damping Valves: Hand-assembled valves replicate the original damping characteristics for factory-level ride quality and vehicle stability.
• High-Carbon Steel Coil Springs: Heat-treated and stress-relieved springs are cycle-tested for long-lasting durability and consistent performance.
• Robust Strut Body and Brackets: Thick, reinforced construction minimizes flex and metal fatigue, maintaining proper wheel alignment under all driving conditions.
• OE-Specific Spring Design: Coil springs feature the same wind direction and optimized spring seat pitch as original equipment to reduce wear on suspension components.
• Pre-Assembled Unit: Comes complete with spring, top mount, and insulators for a straightforward installation without the need for additional parts.

Construction & Design:

The KYB Strut-Plus Strut is built with precision and durability in mind. The coil springs are crafted from high-carbon steel that undergoes heat treatment and stress relief processes to ensure resilience against fatigue and deformation. The strut body and mounting brackets are constructed with thick steel to resist flexing and maintain structural integrity, which is critical for preserving wheel alignment and suspension geometry.

Each damping valve is hand-assembled in-house to match the original equipment manufacturer’s specifications, delivering consistent shock absorption and ride comfort. This meticulous engineering ensures that the strut assembly performs exactly as intended, restoring the vehicle’s handling characteristics and ride height to factory standards.

Performance & Sound

By restoring the original damping and spring rates, the KYB Strut-Plus Strut enhances vehicle control, steering precision, and braking stability. Drivers will notice improved responsiveness and reduced body roll during cornering. The strut’s design also helps maintain proper headlight aim and the functionality of electronic safety systems that rely on accurate ride height. While primarily focused on suspension performance, the Strut-Plus contributes to a quieter, more controlled ride by effectively absorbing road imperfections.

Installation & Fitment:

The KYB Strut-Plus Strut SR4550 is a direct replacement for the front struts on 2019 Ram 1500 Classic 4WD Diesel trucks with all cab styles. Each assembly arrives pre-assembled with the coil spring, top mount, and insulators, simplifying the installation process and reducing labor time. No modifications or additional components are required, making it an ideal upgrade for both professional mechanics and experienced DIY enthusiasts.

What's Included:

• Front Strut Assembly (Left or Right)
• High-Carbon Steel Coil Spring
• Top Mount
• Insulators
• Pre-Assembled Components for Easy Installation

Ideal For:

This KYB Strut-Plus Strut is perfect for Ram 1500 Classic owners who want to restore their truck’s original ride height and handling characteristics after wear or damage. It is also an excellent choice for those seeking a reliable, OE-quality suspension upgrade that maintains factory performance and safety standards. Whether you use your Ram for daily driving, towing, or off-road adventures, the SR4550 provides durable, consistent performance to keep your vehicle stable and comfortable.

KYB is a major shock and strut manufacturer supplying both OEM and aftermarket suspension components, with options that range from OE-replacement ride quality to more performance-oriented control. For enthusiasts, KYB upgrades are a solid way to restore damping performance and tighten handling feel with proven manufacturing scale and consistency.