KYB 554353 Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for GM SUVs

The KYB Gas-a-Just 554353 is a rear monotube shock absorber built for drivers who want firmer control, quicker response, and consistent damping. It is engineered for rear suspension use on select Chevrolet Equinox, GMC Terrain, Saturn Vue, Pontiac Torrent, and Suzuki XL-7 applications.

Gas-a-Just shocks use a high-pressure monotube design that separates gas and oil for fade-resistant operation and immediate response. For GM SUVs that work, tow, or run larger wheels and tires, this KYB Gas-a-Just rear shock absorber adds damping performance beyond OE-style twin-tube designs.

Key Features

• Part number 554353
• Rear suspension shock absorber
• Monotube design with separate gas and oil chambers
• Up to 25% more damping performance over original equipment shocks
• High-pressure nitrogen gas for fast response and reduced fade
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• Designed specifically for GM SUV applications
• Compatible with electronic safety systems that rely on suspension performance

Product Details

KYB Gas-a-Just 554353 is part of the Gas-a-Just line, a performance-focused shock absorber series from KYB. The monotube construction uses an air-free hydraulic working area for control and a separate high-pressure gas chamber for consistent ride quality and instant damping when conditions change. That makes it a practical upgrade for Chevrolet Equinox and GMC Terrain rear suspension service, as well as Saturn Vue, Pontiac Torrent, and Suzuki XL-7 rear shock replacement.

Measured specifications include a compressed length of 13.78 inches, extended length of 21.14 inches, and stroke length of 7.36 inches. Upper mount type is E2(12X43) and lower mount type is E2(12.8X43). The design also includes an R-stop and does not use an internal rebound spring or B-stop.

This part cross-references Monroe Shocks & Struts 911258 for the same application.

What It Helps Address

• Excessive rear bounce or oscillation
• Reduced steering response from worn rear shocks
• Fade during repeated suspension movement
• Uneven control when towing or carrying heavier loads
• Ride instability on GM SUVs with larger tires and wheels

Installation Notes and Fitment

Fits 2005-2017 Chevrolet Equinox, rear. Fits 2010-2017 GMC Terrain, rear. Fits 2008-2010 Saturn Vue, rear. Fits 2008-2009 Pontiac Torrent, rear, excluding Sport Suspension. Fits 2007-2009 Suzuki XL-7, rear, without 3rd row seating. Fits 2006-2007 Pontiac Torrent, rear.

Before installation, verify mount style, compressed and extended length, and rear suspension configuration against the vehicle. This shock absorber is intended for rear placement only and should be matched to the correct application listed above. For Chevrolet Equinox and GMC Terrain service, confirm the vehicle’s suspension setup before replacing the original unit.

Quality Assurance

KYB manufactures the Gas-a-Just line with a monotube layout and high-pressure gas separation to maintain consistent damping performance. The triple chrome plated piston rod is used to help reduce seal wear and support long-term operation in demanding rear suspension service.