1963-72 Chevy Pickup Rear Dropmember , Level 3 Airbag


The 1963-72 Chevy Pickup Rear Level 3 Airbag Dropmember suspension system is engineered to lay frame with large diameter wheel/tire combinations.

Ride Height - 4"
Deflated Height - Lay Frame


1963-72 Dropmember Level 3 Rear Airbag

The Rear Level 3 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. 4” when running a 30” tall tire, and the frame will rest on the ground when deflated (measurements are taken from bottom of the frame rail under the cab to the ground).

Designed to be paired with our Dropmember Level 3 Front.

Basic Kit Includes:

  • - Trailing arm/Trailing arm x-member assembly
  • - 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.


Firestone F9000 Air Spring Kit - This standard Firestone air spring offers maximum load support and operates at up to 100 psi. The spring has a 1/4" inflation port, a ride height of 8.25" and a maximum diameter of 5.70".

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
Manufacturer PB Fab
Make Chevy / GMC
Year 1963-66, 1967-72
Model C10, C20
Build time Typical Production Time is 4-5 weeks
Instructions Download Instructions
CA PROP 65 WARNING CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov