KYB 5550018 Suspension Shock Absorber - Front

KYB Gas-a-Just Front Shock for Jeep Wrangler

The KYB Gas-a-just 5550018 is a front suspension shock absorber for Jeep Wrangler and Wrangler JK models with a 1.5 inch to 3 inch lift. This monotube design uses separate hydraulic and high-pressure gas chambers to deliver responsive damping and consistent control during everyday driving and more demanding road conditions.

Key Features

• KYB Gas-a-just monotube construction for front suspension use
• Fits 2007-2017 Jeep Wrangler, front, with 1.5 inch to 3 inch lift
• Fits 2018 Jeep Wrangler JK, front, with 1.5 inch to 3 inch lift
• Air-free hydraulic piston and valve area for direct response
• High-pressure nitrogen gas chamber with floating piston for ride comfort and added performance on demand
• Compressed length: 15.31 in; extended length: 24.57 in; stroke length: 9.26 in
• Lower mount type: E2 (12.8x40); upper mount type: S1 (3/8-24)
• Dust cover included

Product Details

KYB Gas-a-just shocks are built around a monotube layout that separates the working chambers for control and ride quality. The hydraulic side responds quickly to suspension movement, while the gas chamber helps maintain consistent damping under load. For lifted Jeep Wrangler and Wrangler JK front suspension setups, KYB Gas-a-just 5550018 provides a direct-fit shock absorber solution with the dimensions and mounting style needed for the listed applications. This part number, 5550018, is a practical choice for drivers replacing worn front shocks on a lifted Jeep Wrangler or Jeep Wrangler JK.

KYB’s Gas-a-just line focuses on immediate damping response and reduced fade from aeration, which is important when the suspension is working harder after a lift. If you are searching for a front shock absorber for 2007-2017 Jeep Wrangler or 2018 Jeep Wrangler JK with a 1.5 inch to 3 inch lift, KYB 5550018 matches that application.

What It Helps Address

• Excessive front-end bounce after hitting bumps
• Reduced control from worn or tired front shocks
• Inconsistent damping during repeated suspension movement
• Ride instability on lifted Jeep Wrangler and Wrangler JK setups
• Front suspension noise or harshness caused by degraded shock performance

Installation Notes and Tips

Verify lift height before ordering, since this shock is listed for 1.5 inch to 3 inch lifted front applications. Confirm the lower E2 (12.8x40) and upper S1 (3/8-24) mount types match the vehicle’s suspension hardware before installation. Measure the existing shock length and compare it to the compressed and extended dimensions to ensure proper suspension travel on your Jeep Wrangler or Wrangler JK.

For best results, inspect related front suspension components such as bushings, mounts, and control arms during replacement. This helps ensure the new shock absorber operates within the intended range on lifted Jeep Wrangler front suspension systems.

Quality Assurance

KYB is known for suspension components engineered to meet OE-style performance expectations, and the Gas-a-just line uses a monotube design to support consistent damping response. Part number 5550018 is built for the listed Jeep Wrangler and Wrangler JK front fitments.