KYB 5550026 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Mustang Mach-E

The KYB Gas-a-just 5550026 is a monotube suspension shock absorber built as an OE-style replacement for the rear of the 2021-2023 Ford Mustang Mach-E. It is engineered to restore original ride control with quick response, stable damping, and consistent performance in everyday driving.

Key Features

• Monotube shock absorber design for responsive damping and control
• Air-free hydraulic piston and valve area for direct shock response
• High-pressure nitrogen gas chamber with floating piston for ride comfort and on-demand performance
• Compressed length: 13.9 in.; extended length: 21.97 in.; stroke length: 8.07 in.
• Lower mount type: E2 (12.2 x 62.5); upper mount type: S1 (8MM)
• Rear suspension application for the Ford Mustang Mach-E

Detailed Description

KYB Gas-a-just shocks are part of the Gas-a-just product line, which focuses on OE monotube replacement performance for vehicles that need controlled damping without sacrificing normal ride quality. This KYB 5550026 rear shock absorber uses separate working chambers to keep hydraulic response and gas pressure functions distinct, helping maintain consistent control during routine driving and firmer response when suspension demand increases. It is a direct-fit rear shock for 2021-2023 Ford Mustang Mach-E models and is also listed as a replacement for OE part numbers LJ9Z18125A, LJ9Z18125B, and LJ9Z18125J.

Compatible With 2021-2023 Ford Mustang Mach-E, rear. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced damping control over bumps and road joints
• Uneven or inconsistent rear suspension response
• Loss of ride stability during normal driving
• Wear-related replacement needs on the rear suspension

Installation Notes and Tips

Verify the compressed length, extended length, and mount types before installation to confirm proper rear suspension fitment on the Mustang Mach-E. Inspect surrounding bushings, mounts, and hardware condition during replacement, and compare the removed shock to the new KYB 5550026 unit before final installation.

Quality Assurance

KYB is a recognized OE supplier, and the Gas-a-just line is built to restore factory-style suspension capability with monotube construction and controlled gas pressure for consistent rear shock performance.