Koni Freightliner M2/S2 RV EVO FSD Rear Shock Absorber

SKU: 9905 1038

Koni EVO FSD Rear Shock Absorber for Freightliner M2 and S2RV Super-C Motorhomes

The Koni EVO FSD Rear Shock Absorber, designed exclusively for Freightliner M2 and S2RV Super-C RVs. This heavy-duty shock stands out among options by delivering precise damping that adapts to road conditions, ensuring a smoother ride and firmer handling than typical replacements. Built with a 9-ton tensile strength steel body, it handles the demands of RV travel from highway cruising to navigating uneven terrain—while maintaining tire contact and reducing sway for confident control.

Precise Vehicle Fitment

This shock fits the drive axle rear position on the following models:

• Freightliner M2 Super-C: 2014 to current year
• Freightliner S2RV Super-C: 2018 to current year

Confirm compatibility with your specific chassis setup for optimal installation.

Key Specifications

• Part Number: 9905-1038
• Position: Rear (sold individually pair recommended for balanced performance)
• Collapsed Length: 14.48 inches
• Extended Length: 22.80 inches
• Upper Mount: 3/4-inch eye, 3.82 inches wide
• Lower Mount: 3/4-inch eye, 3.18 inches wide with 3.21-inch offset sleeve
• Piston Bore: 50 mm modular design with digressive valve stack for controlled rebound
• Technology: EVO FSD (Frequency Selective Damping) with patented open intake valves and hydraulic rebound stop for adaptive response

What’s Included in Your Purchase

• One (1) Koni 9905-1038 EVO FSD Rear Shock Absorber
• Installation requires standard tools approximate time is 0.75 hours per pair
• Backed by Koni’s limited lifetime warranty when installed by an authorized dealer

Packaging and Shipping Details

• Part Weight: 11 pounds
• Shipping Weight: 12 pounds per unit
• Box Dimensions: 32 x 8 x 8 inches

The 50 mm bore and larger oil capacity in the EVO FSD design provide consistent performance over long distances, minimizing bounce on rough surfaces and enhancing stability during turns or crosswinds. Drivers report noticeable improvements in ride comfort and reduced body roll, making long trips less fatiguing compared to stock or basic aftermarket shocks. Choose the Koni 9905-1038 for Freightliner M2 S2RV rear shock needs it’s the direct fit that transforms handling without sacrificing daily drivability.

Order now to upgrade your RV’s suspension today.