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KYB Gas‑a‑just monotube rear shock provides adaptable damping for Ford F250 Super Duty 4WD models from 1999–2004. The design separates an air‑free hydraulic piston and valve area for responsive control from a high‑pressure nitrogen chamber with a floating piston to preserve comfort and prevent aeration fade, delivering instant firmness on demand while helping electronic safety systems operate as intended.
KYB Shocks & Struts Gas-A-Just Rear FORD F250 Super Duty (4WD) 1999-04 FORD F350 Super Duty (4WD) 19
