Restore the ride control, stability, and handling of your Heavy-Duty Ford Super Duty with the KYB Excel-G Rear Gas Shock (P/N 345070). It drops in as a direct-fit rear shock absorber for the 2005-2016 Ford F-250 Super Duty, the 2008-2016 Ford F-350 Super Duty, and the 2011-2016 Ford F-450 Super Duty (all engines), designed to bring back the vehicle's original engineered damping rather than change it.
The Excel-G is a nitrogen gas-charged, twin-tube shock built on the same KYB OE assembly lines using OE-quality components — earning its OEA (Original Equipment for the Aftermarket) classification.
- Twin-tube gas design: nitrogen gas-charged, calibrated to help restore the truck's designed control and handling.
- Vehicle-specific damping valves: hand-assembled in-house to manage tire contact, steering response, and body movement.
- Triple-lip fluid seal: reduces the chance of oil and gas leaking out.
- Dust cover included: helps shield the piston rod; per the catalog it does not include a bump stop.
Compressed length 17.24 in, extended length 29.64 in, and a 12.40 in stroke. Country of origin: Japan. Sold individually — the listed Super Duty applications use two rear shocks, so order 2 and replace both sides together as a matched pair for balanced control.
Interchange: 5C3Z18125A · 6C3Z18125KBA · 7C3Z18125LGA · G63888 · 911267 · Manufacturer part number 345070
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What vehicles does the KYB 345070 shock fit?
It's a rear gas shock for the 2005-2016 Ford F-250 Super Duty, 2008-2016 Ford F-350 Super Duty, and 2011-2016 Ford F-450 Super Duty (all engines). Check the Buyer's Guide tab to confirm your vehicle.
How many shocks do I need?
The listed Super Duty applications use two rear shocks. This listing is for one, so order 2 and replace both sides together as a matched pair for even, balanced ride control.
What is the Excel-G design?
A nitrogen gas-charged, twin-tube shock built on KYB's OE assembly lines with OE-quality components, earning its OEA (Original Equipment for the Aftermarket) classification.
Does it include a dust cover or bump stop?
A dust cover is included. Per the catalog, it does not include a bump stop, internal rebound bumper, or internal rebound spring.
What are the shock's dimensions?
Compressed length is 17.24 in, extended length is 29.64 in, with a 12.40 in stroke. Country of origin: Japan.
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