KYB 5550017 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Wrangler

The KYB Gas-a-just 5550017 is a rear suspension shock absorber for 2018-2023 Jeep Wrangler models. It uses a monotube design with separate hydraulic and high-pressure gas chambers to deliver responsive damping, consistent control, and a ride that stays composed during everyday driving.

Key Features

• Monotube shock absorber design for direct response and stable damping
• Air-free hydraulic piston and valve area for control and responsiveness
• High-pressure nitrogen gas chamber with floating piston for ride comfort and instant performance demand
• Resists fade caused by aeration during repeated suspension movement
• Compressed length: 17.05 in; extended length: 26.14 in; stroke length: 9.09 in
• Lower mount type: E2 (12.8x40); upper mount type: E2 (12.8x70)
• Dust cover included

Detailed Description

Built for the rear suspension on Jeep Wrangler applications, the KYB Gas-a-just 5550017 is a recommended OEM replacement for drivers who want firmer control without giving up normal-road comfort. The Gas-a-just line uses two working chambers to separate the hydraulic damping function from the gas charge, helping the shock respond quickly when road conditions change. This KYB Gas-a-just shock absorber is a practical choice for a Jeep Wrangler rear shock replacement when consistent damping and reduced fade are priorities.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application. Part number 5550017 is also listed with Mopar interchange references for select Jeep Wrangler rear applications.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced damping control from worn factory shocks
• Ride fade during repeated suspension movement
• Rear-end instability over uneven pavement
• Loss of composure when towing or carrying load in the rear suspension

Installation Notes and Tips

Fits 2018-2023 Jeep Wrangler, rear. Verify compressed length, extended length, and mount style before installation to confirm proper suspension travel and fitment. Inspect surrounding bushings and mounting points during replacement, and replace shocks in axle pairs when the opposite side shows similar wear.

Quality Assurance

KYB is a major OE supplier, and the Gas-a-just line is engineered to deliver controlled damping with a monotube construction that helps maintain performance under repeated use. Part number 5550017 is built to match the rear shock requirements for listed Jeep Wrangler applications.