Gas Shock
Fits Ford, Mercury, Volkswagen β 10 vehicle applications
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Fitment notes
- Position: Front
- Engine: 1.2L H4
- Axle Damper (Rear Quad Shock)
- Install KG4521 with the dustcover to the rear of the vehicle, the spacers (in box) to the inboard side of the shock, and the axle mounting bracket spread slightly (1-2mm).
- Monotube Performance Upgrade
KYB KG4521 Vehicle Fitment
Fits 10 vehiclesThis Gas Shock fits Ford, Mercury, Volkswagen vehicles.
1968-1974 Volkswagen Campmobile
1966-1973 Volkswagen Squareback
1966-1973 Volkswagen Fastback
1955-1979 Volkswagen Transporter
1955-1965 Volkswagen Karmann Ghia
1952-1966 Volkswagen Beetle
KYB KG4521 Specifications
- Upper Mount Type
- E2(12x32)
- Includes Bump Stop
- N
- Stroke Length
- 5.71
- Lower Mount Type
- E2(12x32)
- Internal Rebound Spring
- N
- Compressed Length
- 10.55
KYB KG4521 Product Description
The KYB Gas-a-just monotube shock absorber has additional performance advantages over the traditional twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.
Key Features
- Adds up to 25% more damping performance over original equipment shocks
- Components and valving designed specifically for your vehicle
- Electronic safety systems depend on the suspension, brakes and tires operating as the vehicle manufacturer intended. The KYB Gas-a-just helps keep Electronic Safety Systems performing as designed.
- Fluid leaking can be a cause of shock failure, the KYB Gas-a-just has an ultra-smooth triple chrome plated chrome piston rod to reduce seal wear
- Gas-a-Just monotubes include additional damping over OE design for vehicles that work, tow, and have larger, heavier tires & wheels
- High pressure monotube design separates the gas and oil for fade free operation and instant response
- The higher gas pressure of the KYB Gas-a-Just responds quickly to improve steering response
About KYB
Shop KYB 560201 at Autrex with vehicle fitment details, current pricing, and checkout options for the KYB KG4521. Eligible orders over $99 may qualify for free shipping, with some exceptions.
Seller reviews
What customers say about buying from Autrex β service, shipping and support. These are reviews of the store, not of this specific part.
- July 2026
Couldn't locate the parts for 2013 Civic Si Sedan. Front struts are an Anomaly found them at Capital autoparts. Great service and great parts. Shipping by CanPar sucked however
- July 2026
Great customer service. I placed an order for wheels and tires and it was an easy transaction. Make sure you read the expected lead times for delivery however. I misread that part, but the order did arrive in the correct timeframe stated. The Hostile rims and Hercules tires look great. Thank you
- July 2026
Awesome
Frequently Asked Questions β KYB KG4521
What vehicles does the KYB KG4521 fit?
The KYB KG4521 fits 10 vehicle applications including 1984-2002 Ford Mustang, 1984-1988 Ford Thunderbird, 1984-1988 Mercury Cougar, 1984-1986 Mercury Capri, 1955-1979 Volkswagen Transporter and 5 more. Check the full fitment list above to confirm your vehicle.
What are the shipping options for the KYB KG4521?
Shipping options for the KYB KG4521 are shown during checkout and may vary by item, address, and availability. Eligible orders over $99 may qualify for free shipping, with some exceptions. Call 1-866-461-2787 if you need help confirming shipping or pickup before ordering.
How much does the KYB KG4521 cost?
The KYB KG4521 is currently listed at $83.00 CAD at Autrex. Final price, shipping, taxes, and availability are confirmed during checkout. Call 1-866-461-2787 if you need help before ordering.
Is the Gas Shock a direct fit replacement?
Fit depends on the vehicle and its configuration. Select your vehicle and review the fitment result for the Gas Shock before ordering.
What warranty does the Gas Shock come with?
Warranty coverage and terms for the Gas Shock vary by product and KYB. Review the product-specific manufacturer terms or contact us before ordering.