1973-87 Chevy Pickup Rear Dropmember , Level 1 Airbag


The 1973-87 Chevy Pickup Rear Level 1 Airbag Dropmember suspension system is designed to replace the factory components and improve ride quality, performance, aesthetics, and strength.

Ride Height - 7"
Deflated Height - 3"

1973-87 Dropmember Level 1 Rear Airbag

The Rear Level 1 Dropmember is a modular suspension system designed to replace the factory components and improve ride quality, performance, aesthetics, and strength. It is available in a trailing arm configuration. Ride height measures approx. 7” when running a 30” tall tire, and deflated height is approx. 3” (measurements are taken from bottom of the frame rail under the cab to the ground).

The Level 1 DOES NOT require any bed floor modification.

Designed to be paired with our Dropmember Level 1 Front.

Basic Kit Includes:

  • - Adjustable 4-Link assembly
  • - 4-Link crossmember
  • - Modular bolt-in notch assembly
  • - Bolt-in bridge assembly
  • - Lower bag mounting brackets
  • - Watts link

All rear kits are compatible with both long and short bed trucks.

Does NOT come powdercoated. All parts come raw.

Options & Upgrades

Porterbuilt Rear Frame Crossmember

Porterbuilt tubular rear frame crossmembers are built using thick wall dom tubing and include the necessary grade 8 hardware for installation.

Porterbuilt boxed rear frame crossmembers are built using 3/16" steel and include the necessary grade 8 hardware for installation.


Air Lift Dominator D2600 airbag kit includes 2 airbags plus hardware (fittings are not included). The Dominator D2600 features an unprecedented maximum restrained pressure of 600 psi, 9.7″ usable stroke, and a load range of 349-3055 lbs. This bad boy will give you the performance you crave. With more lift, a softer, smoother ride, and the lowest price in the industry, you can’t go wrong with the Dominator D2600!

Shock Kits

KYB Excel-G gas shocks and struts rely on velocity-sensitive valving to respond to changing road conditions for a smooth, comfortable ride. They feature sintered-iron pistons and guide rods for strength, hard-chrome piston rods for added durability, and seamless cylinders and eyerings that eliminate the typical weak points. Excel-G shocks and struts also have a patented check valve to minimize foaming and aeration and maintain control under tough conditions.

Ridetech HQ Series Shocks - The HQ (handling quality) Series shocks adds rebound adjustment for the driver who wants to tune ride quality AND handling quality to their specific taste. A wide rebound adjustment range allows you to cruise down the road in plush comfort or firm up your suspension for those Saturday morning canyon roads!

More Information
PB Fab
Chevy / GMC
C10, C20
Build time
Typical Production Time is 4-5 weeks
Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account

Lead Time & Shipping Info

All Porterbuilt products are hand built by our staff of professional fabricators in our Arizona facility, using state-of-the-art welding and precision fabrication equipment. Our products are built with quality and performance in mind.

For additional information on our manufacturing and lead times, please click here: Production & Shipping Info.

CALIFORNIA WARNING: Cancer and Reproductive Harm -
To Top