-14%
Sold out
Click to zoom in
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.
KONI
KONI builds ride control products engineered around a single-tube design that delivers consistent damping across varying road conditions. Whether you're tuning for daily comfort, towing stability, or spirited driving, KONI's adjustable shock absorbers let you dial in the exact feel your vehicle needs.Popular UpgradesKONI Sport (Yellow) shocks are a top choice for performance street use, offering external rebound adjustment for a firmer, more controlled ride. The KONI Special Active series uses a patented self-regulating valve that automatically adapts damping based on road input, making it ideal for stock-height vehicles seeking improved handling without sacrificing comfort.Are KONI shocks a direct bolt-on replacement?Yes. KONI designs their shock absorbers to match OEM mounting dimensions, so installation uses factory hardware on most applications. No cutting, drilling, or modification is required for standard fitments. Some sport or lowered applications may pair KONI shocks with m...
View KONI Products
Shocks and Struts
Shop shocks and struts from Bilstein, FOX, King Shocks, KYB, Koni, Rancho, Skyjacker, ICON Vehicle Dynamics, Fabtech Dirt Logic, Pedders, MaxTrac, QA1, Tuff Country, Zone Offroad, JKS Manufacturing, Moroso, Ridetech, and Black Ops Auto Works. Find front shocks, rear shocks, front struts, rear struts, loaded strut assemblies, monotube shocks, twin-tube shocks, gas-charged shocks, hydraulic shocks, reservoir shocks, and steering dampers for daily drivers, lifted trucks, tow rigs, SUVs, off-road builds, muscle cars, and street-performance platforms. Shocks and struts damp spring oscillation so the tire stays planted on the road. Shop by vehicle year, make, model, trim, drivetrain, front or rear position, lift or drop height, damper construction (monotube vs twin-tube), and application (OE replacement, tow, off-road, performance, race, drag). Shocks and struts are wear items on every vehicle and the single most common suspension replacement job. Unlike coilovers, most shocks and str...
View Shocks and Struts Products
Suspension
Shop aftermarket suspension parts and kits from Bilstein, KW Suspension, Ohlins, Fox, KING, ICON Vehicle Dynamics, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS Suspension, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Find coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, subframe braces, alignment kits, air suspension systems, and vehicle-specific suspension packages for cars, trucks, SUVs, Jeeps, and off-road builds. Start with a matched shock-and-spring package or a full coilover kit before layering in sway bars, chassis bracing, and camber adjustment hardware. Shop by category, brand, vehicle year, make, model, and trim. Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what factory suspension provides. From lowering springs and coilover kits for s...
View Suspension Products