KYB 5550000 Shock Absorber - Rear

Overview of KYB Gas-a-just Suspension Shock Absorber 5550000

The KYB Gas-a-just suspension shock absorber 5550000 is engineered for precise damping control and reliable performance. Designed specifically for select BMW models, this shock absorber helps maintain vehicle stability and ride comfort under various driving conditions.

• Compressed length: 15.94 inches
• Extended length: 22.04 inches
• Stroke length: 6.1 inches
• Lower mount type: S1 (10mm)
• Upper mount type: S1 (10mm)
• R-stop included, B-stop not included
• No dust cover or internal rebound spring

About the KYB Gas-a-just Product Line

The Gas-a-just line from KYB focuses on gas-charged shock absorbers that provide consistent damping performance and improved handling. This product line is designed to replace original equipment shocks with a direct-fit solution that maintains factory ride quality. The 5550000 shock absorber is part of this line, offering reliable gas pressure technology for enhanced control on BMW vehicles.

Detailed Product Description

The KYB Gas-a-just 5550000 shock absorber features a compressed length of 15.94 inches and an extended length of 22.04 inches, providing a stroke length of 6.1 inches. Both the upper and lower mounts use the S1 (10mm) type, ensuring compatibility with the specified BMW models. The inclusion of an R-stop helps prevent overextension, while the absence of a B-stop and dust cover reflects the original equipment design. This shock absorber does not include an internal rebound spring, focusing on straightforward gas pressure damping for consistent performance.

Compatible BMW Models and Applications

• BMW 128i
• BMW 135i
• BMW 325i
• BMW 328i and 328i xDrive
• BMW 330i and 330xi
• BMW 335d, 335i, 335is, and 335i xDrive

This shock absorber is designed to replace worn or damaged suspension components on these BMW models, restoring handling precision and ride comfort.

Common Issues Addressed by KYB Gas-a-just 5550000

• Reduced vehicle stability due to worn shocks
• Excessive body roll during cornering
• Uneven tire wear caused by poor damping
• Decreased ride comfort on rough roads
• Noise or vibration from failing shock absorbers

Installation Notes and Tips

Installation of the KYB Gas-a-just 5550000 shock absorber requires proper tools and mechanical knowledge. Ensure the vehicle is securely lifted and supported before removing the old shock. Verify that the upper and lower mounts match the S1 (10mm) specification. It is recommended to replace shocks in pairs for balanced suspension performance. Check for any additional suspension component wear during installation.

Quality Assurance and Warranty

KYB manufactures the Gas-a-just 5550000 shock absorber to meet or exceed OEM specifications. The product undergoes rigorous testing to ensure durability and consistent damping performance. Warranty coverage details should be confirmed with the distributor or retailer, as KYB typically offers limited warranties on their suspension components.