KYB KG4520 Shock Absorber - Front

KYB Gas-a-just Front Shock for Volkswagen Beetle

The KYB Gas-a-just KG4520 is a front suspension shock absorber for 1966-1977 Volkswagen Beetle models. Built as a monotube design, it delivers quicker response, consistent damping, and improved control for drivers who want firmer suspension performance on the road.

Gas-a-just Monotube Design

KYB’s Gas-a-just line uses a high-pressure monotube layout with separate gas and oil chambers. That design helps maintain fade-free operation, supports faster steering response, and adds damping performance when the vehicle is carrying heavier wheels, towing loads, or seeing more demanding use. The KG4520 is engineered specifically for Volkswagen applications and is listed as adding up to 25% more damping performance over original equipment shocks.

• Front shock absorber for 1966-1977 Volkswagen Beetle
• Monotube construction for consistent damping and instant response
• High-pressure nitrogen gas chamber helps reduce fade from aeration
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• B-stop included
• Lower mount type: E2(12X32)
• Upper mount type: S1

Detailed Product Overview

The KYB Gas-a-just KG4520 is designed for Volkswagen Beetle front suspension service where sharper control and stable ride behavior are priorities. Its air-free hydraulic working chamber handles responsiveness, while the gas chamber with floating piston supports ride comfort during normal driving and adds damping on demand. For a Volkswagen Beetle front shock replacement, KG4520 provides a direct-fit solution focused on steering feel, body control, and suspension consistency.

This part cross-references Monroe Shocks & Struts 31538 for the same application.

Common Issues This Shock Can Address

• Excessive front-end bounce after bumps
• Loose or delayed steering response
• Reduced control during braking and cornering
• Shock fade from heat or aeration during repeated use
• Wear related to leaking or worn piston rod seals

Installation Notes and Fitment

Fits 1966-1977 Volkswagen Beetle, front. Verify compressed length, extended length, stroke, and mount style before installation: compressed length 12.01 in., extended length 17.32 in., stroke length 5.31 in. The KG4520 uses an E2(12X32) lower mount and S1 upper mount. Confirm the existing shock configuration on your Volkswagen Beetle before replacement.

Quality Assurance

KYB designs the Gas-a-just line with application-specific valving and monotube construction to support consistent suspension performance. The KG4520 is built for front suspension use on the Volkswagen Beetle and follows KYB’s performance-focused shock absorber design standards.