KYB KG4545 Shock Absorber - Rear

KYB Gas-a-Just Shock Absorber for Merkur XR4Ti

The KYB Gas-a-Just KG4545 is a monotube suspension shock absorber built to restore OE-style control with quicker response under load. It is engineered for the Merkur XR4Ti and suits drivers who want firmer damping for daily use, towing, or vehicles with larger wheels and tires.

Key Features

• Monotube design separates gas and oil for consistent damping and fade-resistant operation.
• Provides up to 25% more damping performance than original equipment shocks.
• Higher gas pressure improves steering response and on-demand control.
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage.
• Includes a dust cover for added protection.
• Lower mount type: E2(10X51); upper mount type: E2(10X32).
• Compressed length: 15.87 in; extended length: 24.92 in; stroke length: 9.06 in.

Product Details

KYB Gas-a-Just shocks use two working chambers: an air-free hydraulic section for responsiveness and a high-pressure nitrogen chamber with a floating piston for controlled ride quality. That design supports immediate damping response when suspension demand increases, making the KG4545 a practical OE monotube replacement for the Merkur XR4Ti. This part number, KG4545, is also referenced for drivers seeking a direct suspension shock absorber replacement with firmer control characteristics.

The Gas-a-Just line is KYB’s monotube shock family for vehicles that carry extra load or see more demanding road conditions. For the Merkur XR4Ti, KG4545 is built around the application-specific valving and mounting dimensions needed for proper suspension operation. This part cross-references Gabriel (e.g., 69746) for the same application.

What It Helps Address

• Excessive body motion over bumps and uneven pavement
• Reduced steering response during lane changes or cornering
• Shock fade from heat buildup during repeated suspension movement
• Fluid leakage caused by seal wear on worn shocks
• Loss of control with heavier tires, wheels, or added vehicle load

Installation Notes and Tips

Verify mount style, compressed length, extended length, and stroke length before installation. Replace the shock only on the correct Merkur XR4Ti suspension position and inspect surrounding bushings, mounts, and hardware for wear before reassembly. After installation, confirm that the shock moves through its full travel without binding and that the dust cover is seated correctly.

Quality Assurance

KYB designs Gas-a-Just shocks as OE-style monotube replacements with application-specific valving and construction intended to restore original suspension behavior while improving damping response. The KG4545 is built to support consistent operation in the Merkur XR4Ti suspension system.