KYB 5537500 Suspension Shock Absorber - Rear

KYB Gas-a-Just Rear Shock for Mercedes-Benz CLA250

The KYB Gas-a-Just 5537500 is a monotube rear shock absorber built as an OE-style replacement for the 2014-2018 Mercedes-Benz CLA250, rear. It is designed to restore original handling response while maintaining a controlled ride in everyday driving.

Gas-a-Just is KYB’s monotube shock line, using separate hydraulic and high-pressure gas chambers to deliver quick response, consistent damping, and fade-resistant operation. For drivers searching for a rear shock absorber for Mercedes-Benz CLA250 applications, part number 5537500 provides a direct replacement option with OE-focused design.

Key Features

• Monotube-designed OEM replacement for rear suspension service
• Fits 2014-2018 Mercedes-Benz CLA250, rear, excluding Sport Package
• High-pressure nitrogen gas chamber supports fast steering and suspension response
• Separate gas and oil working areas help maintain consistent damping
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Made in the USA
• R-stop design included

Product Details

The KYB Gas-a-Just 5537500 uses a monotube layout with an air-free hydraulic piston and valve area plus a separate high-pressure nitrogen gas section with a floating piston. That design helps the shock react quickly to road inputs while keeping ride quality controlled during normal driving. It is a strong OE replacement choice for Mercedes-Benz CLA250 rear suspension repair when the goal is to restore factory-like control and handling.

Cross-reference part numbers for the same application include Mercedes-Benz 1173201031 and 1763201931. The 5537500 is sized with a 17.75 compressed length, 23.8 extended length, and 6.05 stroke length, with E2(10.4x50) lower mount and S1(10MM) upper mount dimensions.

Common Problems This Shock Can Address

• Excessive rear bounce or oscillation over bumps
• Reduced handling control during lane changes or cornering
• Fluid leakage from a worn shock absorber
• Delayed suspension response after road impacts
• Uneven ride quality caused by a failing rear shock

Installation Notes and Tips

Fits 2014-2018 Mercedes-Benz CLA250, rear, recommended OEM replacement; exclude Sport Package. Verify mount style, compressed length, and extended length before installation to confirm proper suspension travel and fitment. Replace worn shocks in matched axle service when the opposite side shows similar wear, and inspect related suspension components for damage or looseness during service.

Quality Assurance

KYB designs the Gas-a-Just line as an OE monotube replacement to help restore the vehicle’s original suspension behavior. The high-pressure monotube construction, chrome piston rod, and controlled gas separation are engineered for consistent damping performance in daily driving and demanding road conditions.