Carli Heavy Duty Rear Multi-Rate Coil Spring Kit

2002–2018 Dodge / Ram 1500

CS-RAM15MRC-09-R-HD

Overview:

The Carli Heavy Duty Rear Multi-Rate Coil Spring Kit is engineered specifically for Dodge and Ram 1500 trucks from 2002 through 2018. Designed to provide a progressive spring rate, this kit is ideal for drivers who regularly carry a constant rear bed load of approximately 500 pounds. Whether you’re outfitting your truck for overlanding adventures, hauling heavy toolboxes, or installing bed slides, these springs deliver reliable support and improved ride quality under load.

Offering a subtle rear lift ranging from 1/4" to 1/2" depending on your truck’s configuration, these springs enhance your vehicle’s stance and ground clearance without compromising comfort. Finished in a durable black powdercoat, they resist corrosion and maintain a clean, professional appearance over time.

Key Features:

Carli’s Heavy Duty Rear Multi-Rate Coil Springs combine advanced engineering with practical benefits for loaded trucks:

• Progressive multi-rate design for smooth ride and load support
• Specifically rated for a constant 500 lb rear bed load
• Provides 0.25" to 0.5" of rear lift depending on truck setup
• Durable black powdercoat finish for corrosion resistance
• Compatible with most 2002–2018 Dodge / Ram 1500 models (excluding factory air ride trucks)
• Ideal for overland gear, bed slides, toolboxes, and other heavy rear cargo
• Maintains factory ride quality when unloaded
• Improves rear suspension geometry under load

Construction & Design:

Crafted from high-grade steel, Carli’s coil springs are engineered to withstand the rigors of heavy-duty use while maintaining consistent performance. The multi-rate design means the springs progressively stiffen as load increases, providing a balanced ride whether your truck is empty or fully loaded. The black powdercoat finish not only protects against rust and environmental damage but also ensures long-lasting durability and a clean look that complements your truck’s suspension components.

Installation & Fitment:

Installation of the Carli Heavy Duty Rear Multi-Rate Coil Spring Kit is straightforward for experienced technicians and professional installers. These springs are designed to directly replace your factory rear coil springs without the need for additional modifications. Note that this kit is not compatible with Ram 1500 trucks equipped with factory air ride suspension systems. Fitment covers a wide range of Dodge and Ram 1500 models from 2002 to 2018, including popular trims such as Laramie, SLT, Sport, Big Horn, Rebel, and more.

What's Included:

• Pair of Heavy Duty Rear Multi-Rate Coil Springs
• Installation instructions

Ideal For:

This coil spring kit is perfect for Ram 1500 owners who frequently carry heavy loads in the truck bed and require enhanced rear suspension support. It is especially suited for overlanders, contractors, and tradespeople who rely on their truck for hauling gear, toolboxes, bed slides, or other equipment weighing around 500 pounds. The progressive spring rate ensures a comfortable ride when unloaded while providing the necessary lift and support when loaded.

Fitment Details

• 2002–2010 Dodge Ram 1500 (various trims)
• 2009–2010 Dodge Ram 1500 4x4 (Laramie, SLT, Sport, ST, TRX, TRX4)
• 2011–2018 Ram 1500 (Big Horn, Express, HFE, Laramie, Laramie Limited, Laramie Longhorn, Lone Star, Outdoorsman, R/T, Rebel, SLT, Special Service, Sport, ST, Tradesman)

Carli Suspension builds premium suspension systems for heavy-duty trucks, engineered to bridge daily comfort and high-speed off-road capability. Known for tuned packages for platforms like Ram and Ford Super Duty, Carli focuses on ride quality, stability, and control—ideal for drivers who want a truck that’s composed on the street and confident when the terrain turns into washboard, rocks, or desert miles.