KYB 554365 Suspension Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Wrangler

The KYB Gas-a-just 554365 is a rear suspension shock absorber built for Jeep Wrangler JK and Wrangler applications that need firmer control, quicker response, and stable damping under load. It uses a monotube design with separate gas and oil chambers to reduce fade and maintain consistent performance during everyday driving and demanding use.

Key Features

• Monotube construction separates gas and oil for fade-resistant operation and immediate response
• Adds up to 25% more damping performance over original equipment shocks
• Valving and components are engineered specifically for Jeep applications
• Higher gas pressure improves steering response and suspension control
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Designed for vehicles that work, tow, or run larger, heavier tires and wheels
• Includes dust cover

Product Details

KYB Gas-a-just shocks are part of the Gas-a-just line, a performance-focused shock absorber family that uses a high-pressure monotube layout for consistent damping. The design keeps the hydraulic working area responsive while the nitrogen gas chamber supports ride comfort and instant performance when suspension demand increases. Part number 554365 is a direct-fit rear shock solution for 2007-2018 Jeep Wrangler and 2018 Jeep Wrangler JK rear applications.

This part cross-references Monroe Shocks & Struts 911538 for the same application.

What It Helps Address

• Excessive rear suspension bounce on Jeep Wrangler and Wrangler JK models
• Reduced control when towing or carrying added load
• Shock fade during repeated suspension movement
• Delayed steering and chassis response from worn rear shocks
• Seal wear and fluid leakage associated with aging shock absorbers

Installation Notes

Fits 2007-2017 Jeep Wrangler, rear. Fits 2018 Jeep Wrangler JK, rear. Verify compressed length, extended length, and mount style before installation: compressed length 14.56 in, extended length 22.83 in, stroke length 8.27 in, lower mount type E2(12.8X40), upper mount type E3(68.5X95X0). Rear shock replacement should be performed with the vehicle safely supported and the suspension at the correct ride height for final torque checks.

Quality Assurance

KYB designs Gas-a-just shocks with a monotube layout, high-pressure gas separation, and triple chrome plated piston rods to support consistent damping and reduced seal wear. Part number 554365 is built to KYB’s suspension standards for Jeep Wrangler and Wrangler JK rear fitments.