Godspeed Mercedes-Benz 300D / 300E / 400E Sedan RWD (W124) 1986-1993 Mono-Air Strut Lowering Kits

Mono-AIR Strut Kit Compatible With 300D / 300E / 400E Sedan RWD (W124) 1986 1987 1988 1989 1990 1991 1992 1993 ; NOT Bolt-On replacement for factory air suspension

The Godspeed Project Mono-AIR Strut Kit is the premier suspension solution for enthusiasts looking to bridge the gap between performance handling and air-ride versatility. Engineered as a direct bolt-on replacement for your factory struts, this kit allows you to achieve a slammed aesthetic at the touch of a button without sacrificing the structural integrity of your vehicle.

Each kit features performance-tuned mono-tube shocks with 32 stages of rebound damping adjustment. This puts you in total control—soften the damping for a smooth daily commute or stiffen it for high-speed stability and precision.

To ensure long-term reliability, we utilize heavy-duty rubber air bags constructed from premium compounds designed to resist drying and cracking. When paired with our corrosion-resistant hardware, the Mono-AIR system provides a durable, high-performance air suspension that stands up to the elements.

Key Features 

• Precision Damping: 52mm Mono-tube shock bodies with 32 levels of adjustable rebound to fine-tune your ride quality.
• High-Performance Internals: Race-spec shock oil with a high viscosity index ensures consistent damping across all temperatures.
• Premium Air Bags: Multi-layer rubber bags with stainless steel fittings for maximum leak protection and durability (Rated up to 150 PSI).
• Direct Bolt-On: Vehicle-specific aluminum and carbon steel hardware designed for factory-style mounting—no custom fabrication required.
• Universal Compatibility: Includes G1/8 and/or G1/4 connectors (fits 8mm O.D. pneumatic tubing); works seamlessly with most major air management systems on the market.
• Anodized Finish: Anti-corrosion coating on shock bodies for a long-lasting, premium appearance.

What’s Included in the Box?

• (2) Front Shock Damper Assemblies
• (2) Rear Shock Damper Assemblies
• (2) Front Air Bag Assemblies
• (2) Rear Air Bag Assemblies
• Stainless Steel Fitting Kit (G1/8 and/or G1/4)
• Spanner Wrenches