ST Suspensions ST XA Coilover Kit

2011–2023 Chrysler 300 / Dodge Charger Sedan RWD

18227019

Overview:

The ST Suspensions ST XA Coilover Kit is engineered for enthusiasts seeking precise control over their vehicle’s stance and handling characteristics. Designed specifically for the 2011 through 2023 Chrysler 300 and Dodge Charger Sedan Rear-Wheel Drive models, this coilover kit offers a wide range of ride height adjustment combined with advanced damping technology. Whether you want to lower your car for a more aggressive look or fine-tune the suspension for improved road feel, the ST XA coilovers deliver a perfect balance of performance and comfort.

Built to enhance driving dynamics without sacrificing everyday usability, these coilovers provide a customizable driving experience that adapts to your preferences. From spirited street driving to occasional track use, the ST XA kit puts you in control of your vehicle’s behavior with confidence and reliability.

Key Features:

The ST XA Coilover Kit incorporates innovative features that ensure durability, adjustability, and superior performance:

• Wide range of ride height adjustment: Front lowering from 1.2 to 2.6 inches, rear lowering from 1.4 to 2.6 inches
• 16-click adjustable rebound damping for precise tuning of ride comfort and handling
• Durable composite spring perch made from friction-optimized polyamide with embedded stainless steel insert to prevent corrosion and ensure strength
• Galvanized zinc-coated steel struts for enhanced corrosion resistance and longevity
• Integrated dust protection system and elastomer bump stops to shield piston rods and internal components from dirt and moisture
• Progressive spring rates front and rear for balanced ride quality and performance
• Factory preset damper settings tested on KW shock dynos for consistent quality and performance
• Mono-block guide system and multi-layered sealing package for reliable damping and smooth operation
• Hand-built in Germany by KW experts, backed by a 5-year limited warranty with unlimited mileage

Construction & Design:

The ST XA coilovers are meticulously engineered with high-quality materials and advanced manufacturing techniques. The spring perch utilizes a wear-resistant polyamide composite material combined with a stainless steel insert, effectively preventing corrosion between the strut and perch while maintaining structural integrity. This design ensures long-lasting, smooth ride height adjustments without thread damage or seizing.

The struts feature galvanized zinc-coated steel housings to resist rust and environmental wear, extending the life of the suspension components. The piston rods are protected by a multi-layered dust protection system and elastomer bump stops that act as dynamic load limiters, preserving ride quality and durability even under demanding conditions.

Installation & Fitment:

The ST XA Coilover Kit is a direct-fit solution for 2011–2023 Chrysler 300 and Dodge Charger Sedan Rear-Wheel Drive models, requiring no modifications for installation. Designed for straightforward bolt-on installation, these coilovers replace the factory suspension components while maintaining compatibility with the vehicle’s original mounting points. Note that vehicles equipped with the Electronic Damper Control (EDC) system are not compatible with this kit.

Each kit includes a detailed damper setup manual to assist with initial adjustment and future tuning, allowing you to easily reset to factory-recommended settings or customize your suspension to your driving style.

What's Included:

• Front and rear coilover struts with progressive springs
• Adjustable composite spring perches with stainless steel inserts
• Elastomer bump stops with integrated dust protection
• Detailed damper setup and adjustment manual
• All necessary hardware for installation

Ideal For:

The ST XA Coilover Kit is ideal for drivers who want to enhance their Chrysler 300 or Dodge Charger Sedan’s appearance and handling without compromising daily comfort. It suits enthusiasts who demand precise suspension tuning, whether for spirited street driving, occasional track days, or simply achieving a refined, aggressive stance. Its adjustable damping and ride height make it versatile for a wide range of driving preferences, from comfortable cruising to sporty cornering.

ST Suspensions offers suspension components designed for improved stance and control. Built for enthusiasts who care about feedback and control, their components target ride, handling, and adjustability for everything from daily drivers to dedicated track builds. If you want a more planted feel, cleaner alignment behavior, and confidence in corners, ST Suspensions is a strong choice.