D2 Racing D-CA-03 RS Series Coilover Kit Adjustable Monotube - 36-Way

The D2 Racing RS Series Coilover Kit (D-CA-03) is D2's flagship coilover system, delivering an outstanding balance of performance and affordability that has made it a mid-level favorite for enthusiasts for over 20 years. Engineered for modified street cars that also see occasional track duty, the RS Series provides serious suspension upgrades without sacrificing everyday drivability.

At the heart of the RS Series is a 36-way damping adjustable monotube shock design, giving drivers precise control over ride quality and handling characteristics. Separate ride height and spring preload adjustments allow for optimal suspension tuning while maintaining full strut stroke at all times. Ride height can be lowered 60mm to 100mm below factory ride height, allowing for a more aggressive stance without compromising performance.

Key Features:

• 36-way damping adjustable monotube shock assemblies for precise handling tuning
• Independent ride height and spring preload adjustments — always maintains full strut stroke
• Lowers 60mm–100mm from OEM ride height
• Front and rear units reuse factory OEM top mounts
• SAE9254 steel springs resist deformation under repeated load
• 6061 aluminum components resist corrosion in wet conditions
• Anodized and powder-coated mounts with anti-rust coating on strut threads
• Fully rebuildable and serviceable in the USA
• Custom spring rates available (3.5, 5, 7, 9, 11, 13, 15, 18, and 22 kg/mm) at additional charge
• 1-year manufacturer's warranty covering bushings, ball joints, and damping properties for the original purchaser

Whether you're dialing in your daily driver or preparing for a weekend track event, the D2 Racing RS Series coilover kit delivers the adjustability and build quality performance enthusiasts demand at an accessible price point.