KYB KG5557 Shock Absorber - Rear

KYB Gas-a-just Rear Shock for Vanagon

The KYB Gas-a-just KG5557 is a monotube suspension shock absorber built as an OE-style replacement for the rear of the Volkswagen Vanagon. It is engineered to restore original control while adding quicker response for vehicles that carry extra load, tow, or run larger wheels and tires.

Gas-a-just Line Details

KYB Gas-a-just shocks use separate hydraulic and high-pressure nitrogen gas chambers to keep oil and gas isolated for consistent damping. That design supports fade-resistant operation, sharper steering response, and a more controlled ride during normal driving and under heavier demand.

• Adds up to 25% more damping performance over original equipment shocks
• Monotube design separates gas and oil for instant response and fade resistance
• Triple chrome plated piston rod helps reduce seal wear and fluid leakage
• Valving and components are tuned specifically for Volkswagen applications
• Higher gas pressure improves steering response and suspension control
• Supports electronic safety systems by helping the suspension operate as intended

Detailed Product Overview

Part number KG5557 is a rear suspension shock absorber for 1980-1991 Volkswagen Vanagon models. It measures 12.95 inches compressed, 20.83 inches extended, and provides 7.87 inches of stroke. Upper and lower mounts are E2 (12x42), and a dust cover is included. This part cross-references Monroe Shocks & Struts (e.g., 34971) for the same application.

For Volkswagen Vanagon rear suspension service, KG5557 is a direct-fit option when you want OE-style geometry with firmer damping control. It is a practical choice for restoring ride stability on a Vanagon that feels loose, bouncy, or less controlled than it should.

What It Helps Address

• Excessive rear bounce after bumps or dips
• Reduced control when carrying cargo or towing
• Soft or delayed steering response from worn shocks
• Suspension fade during repeated load changes
• Uneven ride quality caused by aging rear dampers

Installation Notes

Fits 1980-1991 Volkswagen Vanagon, rear. Replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. Verify mount style and dimensions before installation, and inspect surrounding suspension components for wear while servicing the rear shocks.

Quality Assurance

KYB designs the Gas-a-just line as an OE monotube replacement to restore factory capability with improved damping control. The KG5557 is built with application-specific valving and a monotube layout for consistent performance in Volkswagen Vanagon rear suspension service.