KYB

Gas-A-Just Monotube Shocks

KG5420
$75.99 $81.66

In Stock Estimated Delivery in 3-6 Business Days
KYB

Gas-A-Just Monotube Shocks

KG5420
$75.99 $81.66

In Stock Estimated Delivery in 3-6 Business Days
Authorized dealer
Free shipping on orders above $175 within the lower 48 United States
Brand new parts with warranty coverage
Free 30-day return and exchange on qualifying orders
Got Questions?
Our experts are here to help!
Part Numbers & Details
Package Contains 1 Shock
You'll be getting one shock absorber.
KYB Lifetime Warranty
Manufacturer limited lifetime warranty protects against defects and premature failure.
Factory Hardware for Installation
All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Shock boots sold separately.
Product Highlights
Factory Upgrade for improved handling
Specifications
Part NumberLift/LoweredPositionItemQuantityExtended LengthCompressed LengthTravelTop MountBottom Mount
KG5420FactoryRearShock Absorber123.19"14.33"8.86"EYELETEYELET
Product Details

The KYB Gas-A-Just shock absorber increases vehicle stability, handling, and control through a monotube shock design. A monotube shock absorber is more responsive to the road and automatically adjusts to driving conditions. The Gas-A-Just shock will give a slightly firmer ride and provide additional control, limiting body roll and nose dive.

Compatibility List
YearMakeModelDrivePosition
1986ChevroletC20RWDRear
1985ChevroletC20RWDRear
1984ChevroletC20RWDRear
1983ChevroletC20RWDRear
1982ChevroletC20RWDRear
1981ChevroletC20RWDRear
1980ChevroletC20RWDRear
1979ChevroletC20RWDRear
1978ChevroletC20RWDRear
1977ChevroletC20RWDRear
1976ChevroletC20RWDRear
1975ChevroletC20RWDRear
1974ChevroletC20 PickupRWDRear
1973ChevroletC20 PickupRWDRear
1986ChevroletC30RWDRear
1985ChevroletC30RWDRear
1984ChevroletC30RWDRear
1983ChevroletC30RWDRear
1982ChevroletC30RWDRear
1981ChevroletC30RWDRear
1980ChevroletC30RWDRear
1979ChevroletC30RWDRear
1978ChevroletC30RWDRear
1977ChevroletC30RWDRear
1976ChevroletC30RWDRear
1975ChevroletC30RWDRear
1974ChevroletC30 PickupRWDRear
1973ChevroletC30 PickupRWDRear
1996ChevroletG30Rear
1995ChevroletG30Rear
1994ChevroletG30Rear
1993ChevroletG30Rear
1980ChevroletP10Rear
1979ChevroletP10Rear
1978ChevroletP10Rear
1977ChevroletP10Rear
1976ChevroletP10Rear
1975ChevroletP10Rear
1974ChevroletP10 VanRear
1989ChevroletP20Rear
1988ChevroletP20Rear
1987ChevroletP20Rear
1986ChevroletP20Rear
1985ChevroletP20Rear
1984ChevroletP20Rear
1983ChevroletP20Rear
1982ChevroletP20Rear
1999ChevroletP30Rear
1998ChevroletP30Rear
1997ChevroletP30Rear
1996ChevroletP30Rear
1995ChevroletP30Rear
1994ChevroletP30Rear
1993ChevroletP30Rear
1992ChevroletP30Rear
1991ChevroletP30Rear
1990ChevroletP30Rear
1989ChevroletP30Rear
1988ChevroletP30Rear
1987ChevroletP30Rear
1986ChevroletP30Rear
1985ChevroletP30Rear
1984ChevroletP30Rear
1983ChevroletP30Rear
1982ChevroletP30Rear
1981ChevroletP30Rear
1980ChevroletP30Rear
1979ChevroletP30Rear
1978ChevroletP30Rear
1977ChevroletP30Rear
1976ChevroletP30Rear
1975ChevroletP30Rear
1974ChevroletP30 VanRear
1973ChevroletP30 VanRear
1988ChevroletR20RWDRear
1987ChevroletR20RWDRear
1988ChevroletR30RWDRear
1987ChevroletR30RWDRear
1991ChevroletR3500RWDRear
1990ChevroletR3500RWDRear
1989ChevroletR3500RWDRear
1978GMCC25RWDRear
1977GMCC25RWDRear
1976GMCC25RWDRear
1975GMCC25RWDRear
1974GMCC25/C2500 PickupRWDRear
1973GMCC25/C2500 PickupRWDRear
1986GMCC2500RWDRear
1985GMCC2500RWDRear
1984GMCC2500RWDRear
1983GMCC2500RWDRear
1982GMCC2500RWDRear
1981GMCC2500RWDRear
1980GMCC2500RWDRear
1979GMCC2500RWDRear
1978GMCC35RWDRear
1977GMCC35RWDRear
1976GMCC35RWDRear
1975GMCC35RWDRear
1974GMCC35/C3500 PickupRWDRear
1973GMCC35/C3500 PickupRWDRear
1986GMCC3500RWDRear
1985GMCC3500RWDRear
1984GMCC3500RWDRear
1983GMCC3500RWDRear
1982GMCC3500RWDRear
1981GMCC3500RWDRear
1980GMCC3500RWDRear
1979GMCC3500RWDRear
1996GMCG3500Rear
1995GMCG3500Rear
1994GMCG3500Rear
1993GMCG3500Rear
1978GMCP15Rear
1977GMCP15Rear
1976GMCP15Rear
1975GMCP15Rear
1974GMCP15/P1500 VanRear
1980GMCP1500Rear
1979GMCP1500Rear
1989GMCP2500Rear
1988GMCP2500Rear
1987GMCP2500Rear
1986GMCP2500Rear
1985GMCP2500Rear
1984GMCP2500Rear
1983GMCP2500Rear
1982GMCP2500Rear
1978GMCP35Rear
1977GMCP35Rear
1976GMCP35Rear
1975GMCP35Rear
1974GMCP35/P3500 VanRear
1973GMCP35/P3500 VanRear
1999GMCP3500Rear
1998GMCP3500Rear
1997GMCP3500Rear
1996GMCP3500Rear
1995GMCP3500Rear
1994GMCP3500Rear
1993GMCP3500Rear
1992GMCP3500Rear
1991GMCP3500Rear
1990GMCP3500Rear
1989GMCP3500Rear
1988GMCP3500Rear
1987GMCP3500Rear
1986GMCP3500Rear
1985GMCP3500Rear
1984GMCP3500Rear
1983GMCP3500Rear
1982GMCP3500Rear
1981GMCP3500Rear
1980GMCP3500Rear
1979GMCP3500Rear
1989GMCR2500RWDRear
1988GMCR2500RWDRear
1987GMCR2500RWDRear
1991GMCR3500RWDRear
1990GMCR3500RWDRear
1989GMCR3500RWDRear
1988GMCR3500RWDRear
1987GMCR3500RWDRear

Shock Surplus handles KYB's warranty claims; if you encounter a product defect please submit a warranty claim.

View KYB Warranty Information

For more information: View the Shock Surplus Warranty Policy.

Shipping Info

Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

  • Applies to items like axles, leaf springs, and long-travel kits.
  • No international shipping on freight items — only to U.S.-based freight forwarders.
  • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

Contact us for an international shipping quote.

Returns & Exchanges

30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

  • No restocking fees for exchanges or gift card credit.
  • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
  • Installed, damaged, or dirty parts cannot be returned.
  • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

Need help? Use Live Chat or Email Us anytime.

Start a Return or Exchange

Return Shipping Responsibility

CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

  • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
  • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

  • Under 50 lbs: Discounted carrier rate
  • Over 50 lbs: Discounted carrier rate + $25 oversize fee

Refunds

Refunds are issued within 5–7 business days of receiving your return.

  • Funds typically post to your account in 1–3 business days depending on your payment method.
  • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
  • You will receive an email once your refund is processed.

International Orders

  • All international orders are final sale.
  • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
  • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
  • We are not responsible for goods once exported outside the U.S.

Product Details

Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!

Part Numbers & Details

View full product specifications

Close specs
Part Numbers & Details
Package Contains 1 Shock
You'll be getting one shock absorber.
KYB Lifetime Warranty
Manufacturer limited lifetime warranty protects against defects and premature failure.
Factory Hardware for Installation
All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Shock boots sold separately.
Product Highlights
Factory Upgrade for improved handling
Specifications
Part NumberLift/LoweredPositionItemQuantityExtended LengthCompressed LengthTravelTop MountBottom Mount
KG5420FactoryRearShock Absorber123.19"14.33"8.86"EYELETEYELET
Product Details

The KYB Gas-A-Just shock absorber increases vehicle stability, handling, and control through a monotube shock design. A monotube shock absorber is more responsive to the road and automatically adjusts to driving conditions. The Gas-A-Just shock will give a slightly firmer ride and provide additional control, limiting body roll and nose dive.

Compatibility List
YearMakeModelDrivePosition
1986ChevroletC20RWDRear
1985ChevroletC20RWDRear
1984ChevroletC20RWDRear
1983ChevroletC20RWDRear
1982ChevroletC20RWDRear
1981ChevroletC20RWDRear
1980ChevroletC20RWDRear
1979ChevroletC20RWDRear
1978ChevroletC20RWDRear
1977ChevroletC20RWDRear
1976ChevroletC20RWDRear
1975ChevroletC20RWDRear
1974ChevroletC20 PickupRWDRear
1973ChevroletC20 PickupRWDRear
1986ChevroletC30RWDRear
1985ChevroletC30RWDRear
1984ChevroletC30RWDRear
1983ChevroletC30RWDRear
1982ChevroletC30RWDRear
1981ChevroletC30RWDRear
1980ChevroletC30RWDRear
1979ChevroletC30RWDRear
1978ChevroletC30RWDRear
1977ChevroletC30RWDRear
1976ChevroletC30RWDRear
1975ChevroletC30RWDRear
1974ChevroletC30 PickupRWDRear
1973ChevroletC30 PickupRWDRear
1996ChevroletG30Rear
1995ChevroletG30Rear
1994ChevroletG30Rear
1993ChevroletG30Rear
1980ChevroletP10Rear
1979ChevroletP10Rear
1978ChevroletP10Rear
1977ChevroletP10Rear
1976ChevroletP10Rear
1975ChevroletP10Rear
1974ChevroletP10 VanRear
1989ChevroletP20Rear
1988ChevroletP20Rear
1987ChevroletP20Rear
1986ChevroletP20Rear
1985ChevroletP20Rear
1984ChevroletP20Rear
1983ChevroletP20Rear
1982ChevroletP20Rear
1999ChevroletP30Rear
1998ChevroletP30Rear
1997ChevroletP30Rear
1996ChevroletP30Rear
1995ChevroletP30Rear
1994ChevroletP30Rear
1993ChevroletP30Rear
1992ChevroletP30Rear
1991ChevroletP30Rear
1990ChevroletP30Rear
1989ChevroletP30Rear
1988ChevroletP30Rear
1987ChevroletP30Rear
1986ChevroletP30Rear
1985ChevroletP30Rear
1984ChevroletP30Rear
1983ChevroletP30Rear
1982ChevroletP30Rear
1981ChevroletP30Rear
1980ChevroletP30Rear
1979ChevroletP30Rear
1978ChevroletP30Rear
1977ChevroletP30Rear
1976ChevroletP30Rear
1975ChevroletP30Rear
1974ChevroletP30 VanRear
1973ChevroletP30 VanRear
1988ChevroletR20RWDRear
1987ChevroletR20RWDRear
1988ChevroletR30RWDRear
1987ChevroletR30RWDRear
1991ChevroletR3500RWDRear
1990ChevroletR3500RWDRear
1989ChevroletR3500RWDRear
1978GMCC25RWDRear
1977GMCC25RWDRear
1976GMCC25RWDRear
1975GMCC25RWDRear
1974GMCC25/C2500 PickupRWDRear
1973GMCC25/C2500 PickupRWDRear
1986GMCC2500RWDRear
1985GMCC2500RWDRear
1984GMCC2500RWDRear
1983GMCC2500RWDRear
1982GMCC2500RWDRear
1981GMCC2500RWDRear
1980GMCC2500RWDRear
1979GMCC2500RWDRear
1978GMCC35RWDRear
1977GMCC35RWDRear
1976GMCC35RWDRear
1975GMCC35RWDRear
1974GMCC35/C3500 PickupRWDRear
1973GMCC35/C3500 PickupRWDRear
1986GMCC3500RWDRear
1985GMCC3500RWDRear
1984GMCC3500RWDRear
1983GMCC3500RWDRear
1982GMCC3500RWDRear
1981GMCC3500RWDRear
1980GMCC3500RWDRear
1979GMCC3500RWDRear
1996GMCG3500Rear
1995GMCG3500Rear
1994GMCG3500Rear
1993GMCG3500Rear
1978GMCP15Rear
1977GMCP15Rear
1976GMCP15Rear
1975GMCP15Rear
1974GMCP15/P1500 VanRear
1980GMCP1500Rear
1979GMCP1500Rear
1989GMCP2500Rear
1988GMCP2500Rear
1987GMCP2500Rear
1986GMCP2500Rear
1985GMCP2500Rear
1984GMCP2500Rear
1983GMCP2500Rear
1982GMCP2500Rear
1978GMCP35Rear
1977GMCP35Rear
1976GMCP35Rear
1975GMCP35Rear
1974GMCP35/P3500 VanRear
1973GMCP35/P3500 VanRear
1999GMCP3500Rear
1998GMCP3500Rear
1997GMCP3500Rear
1996GMCP3500Rear
1995GMCP3500Rear
1994GMCP3500Rear
1993GMCP3500Rear
1992GMCP3500Rear
1991GMCP3500Rear
1990GMCP3500Rear
1989GMCP3500Rear
1988GMCP3500Rear
1987GMCP3500Rear
1986GMCP3500Rear
1985GMCP3500Rear
1984GMCP3500Rear
1983GMCP3500Rear
1982GMCP3500Rear
1981GMCP3500Rear
1980GMCP3500Rear
1979GMCP3500Rear
1989GMCR2500RWDRear
1988GMCR2500RWDRear
1987GMCR2500RWDRear
1991GMCR3500RWDRear
1990GMCR3500RWDRear
1989GMCR3500RWDRear
1988GMCR3500RWDRear
1987GMCR3500RWDRear
Warranty

View warranty coverage

Close specs

Shock Surplus handles KYB's warranty claims; if you encounter a product defect please submit a warranty claim.

View KYB Warranty Information

For more information: View the Shock Surplus Warranty Policy.

Shipping & Returns

Free shipping within the lower 48 United States

Close specs

Shipping Info

Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

  • Applies to items like axles, leaf springs, and long-travel kits.
  • No international shipping on freight items — only to U.S.-based freight forwarders.
  • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

Contact us for an international shipping quote.

Returns & Exchanges

30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

  • No restocking fees for exchanges or gift card credit.
  • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
  • Installed, damaged, or dirty parts cannot be returned.
  • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

Need help? Use Live Chat or Email Us anytime.

Start a Return or Exchange

Return Shipping Responsibility

CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

  • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
  • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

  • Under 50 lbs: Discounted carrier rate
  • Over 50 lbs: Discounted carrier rate + $25 oversize fee

Refunds

Refunds are issued within 5–7 business days of receiving your return.

  • Funds typically post to your account in 1–3 business days depending on your payment method.
  • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
  • You will receive an email once your refund is processed.

International Orders

  • All international orders are final sale.
  • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
  • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
  • We are not responsible for goods once exported outside the U.S.

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