KYB 3440098 Shock Absorber - Rear

KYB Excel-G Rear Shock for Ford Super Duty

KYB Excel-G shock absorber 3440098 is a rear suspension replacement built to restore original ride control, stability, and steering response on select Ford Super Duty trucks. It uses a nitrogen gas-charged, twin-tube design and OE-quality components to return the vehicle to its designed damping characteristics without changing the factory feel.

The Excel-G line is KYB’s OEA-style replacement range, assembled on KYB OE production lines and calibrated for original performance. For Ford F-250 Super Duty and Ford F-350 Super Duty rear applications, this part number 3440098 is a direct-fit service option for drivers and technicians looking to maintain factory handling balance.

Key Features

• KYB recommended OEM replacement shock absorber
• Restores designed control and handling on Ford F-250 Super Duty and Ford F-350 Super Duty rear suspension applications
• Nitrogen gas-charged, twin-tube construction
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Dust cover included
• Strong strut body and bracket design helps maintain alignment by reducing flex

Product Details

KYB Excel-G 3440098 is engineered around OE replacement standards for rear suspension service. It measures 15.74 inches compressed, 26.69 inches extended, and provides 10.95 inches of stroke. Mounting details include an E2 lower mount (14.2 x 38) and E1 upper mount. The design focuses on restoring factory ride control, which is important for braking stability, lane-change response, and consistent handling on heavy-duty trucks.

This part cross-references Ford HC3Z18125B and HC3Z18125C for the same application. The KYB Excel-G line is a practical choice when replacing worn rear shocks on a Ford F-250 Super Duty or Ford F-350 Super Duty and keeping the suspension behavior close to original equipment.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced stability during braking and lane changes
• Uneven or unsettled ride control from worn shock absorbers
• Delayed steering response caused by weak damping
• Suspension movement that can affect tire contact and vehicle control

Installation Notes

• Fits 2023-2024 Ford F-250 Super Duty, rear, Recommended OEM Replacement; Excel-G
• Fits 2022 Ford F-250 Super Duty, rear, w/o Off Road Suspension; Excel-G
• Fits 2017-2022 Ford F-350 Super Duty, rear, w/ Single Rear Wheels, w/o Off Road Suspension; Excel-G
• Fits 2020-2021 Ford F-250 Super Duty, rear, Recommended OEM Replacement; w/o Off Road Suspension; Excel-G
• Fits 2017-2019 Ford F-250 Super Duty, rear, Recommended OEM Replacement; w/ 160 inch, 164 inch and 176 inch Wheelbase (Except Off Road Suspension); Excel-G

Verify rear suspension configuration, wheelbase, and off-road suspension status before ordering. This KYB shock absorber is intended for rear placement only and should be matched to the vehicle’s original mounting style and application notes.

Quality Assurance

KYB supplies shocks and struts to new vehicle manufacturers, and the Excel-G line is built on the same KYB OE assembly lines using OE-quality components. That manufacturing approach supports consistent damping performance and fitment for service replacement on the listed Ford Super Duty applications.