Rear Shock Absorber for 1976-1979 Ford F-150 & More - KYB KG5421

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$66.99

MPN: KG5421

UPC: 781552054214

Item Package Quantity: 1

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KYB Suspension Shock Absorber P/N:KG5421

$66.99

Description

Firm up the rear end of your Ford truck or van with the KYB Gas-a-just shock absorber (KG5421), a high-pressure monotube gas KYB shock absorber built for the rear axle. It drops in as a direct-fit rear replacement for many vehicles, among them the 1976-1979 Ford F-150, 1977-1979 Ford F-250 and 1975-1991 Ford E-250 Econoline — see the Buyer's Guide tab for the full list.

Monotube gas design: two separate working chambers — an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston — so it doesn't experience fade due to aeration.
Up to 25% more damping: adds up to 25% more damping performance over original equipment shocks, with components and valving designed specifically for Ford trucks.
Made for work and tow duty: the Gas-a-just monotube adds damping over the OE design for vehicles that work, tow, and run larger, heavier tires and wheels.
Triple chrome-plated rod: an ultra-smooth triple chrome plated piston rod reduces seal wear, and separating the gas and oil supports fade-free operation and instant response.

The higher gas pressure of the Gas-a-just responds quickly to help improve steering response, and KYB notes it helps keep electronic safety systems performing as the vehicle manufacturer intended. Sold individually.

Interchange: G63387 · 34901

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

G63387, 34901

Frequently Asked Questions

What is the KYB Gas-a-just KG5421?

It's a high-pressure monotube gas KYB shock absorber for the rear axle. It uses an air-free hydraulic chamber plus a nitrogen gas chamber with a floating piston for control without aeration fade.

Will this KYB gas shock absorber fit my Ford?

It's cataloged for the rear of the 1976-1979 Ford F-150, 1977-1979 Ford F-250 and 1975-1991 Ford E-250 Econoline, among other Ford trucks and vans. Check the Buyer's Guide tab for the full list before ordering.

Is the KG5421 a front or rear shock?

It is listed as a rear shock absorber for the applications shown. Confirm it matches your vehicle in the Buyer's Guide tab.

How much more damping does it provide?

KYB states the Gas-a-just adds up to 25% more damping performance over original equipment shocks, with valving designed specifically for Ford trucks that work, tow, and carry larger tires and wheels.

Should I replace both rear shocks together?

This listing is for one shock, sold individually. Replacing the pair on the same axle together is recommended so both sides deliver balanced, even damping.