1973-87 GM Trucks

New boxed rear frame crossmember fabricated from 3/16" steel.

Fits: 1973-87 Chevy Trucks

Porterbuilt tubular control arms are built using thick-wall DOM tubing and CNC cut 3/16" pickeled plate steel. All bushing pivot tubes and ball joint cups are TIG welded.

Available in the following configurations:
1" Forward
1" Narrowed
1" Forward & 1" Narrowed
Standard Length

Includes upper and lower shafts, bushings, and Grade 8 hardware for installation.

NOTE: ALL CONTROL ARMS ARE DESIGNED TO USE PROFORGED BALL JOINTS. .

Porterbuilt tubular control arms are built using thick-wall DOM tubing and CNC cut 3/16" pickeled plate steel. All bushing pivot tubes and ball joint cups are TIG welded.

Available in the following configurations:
1" Forward
1" Narrowed
1" Forward & 1" Narrowed
Standard Length

Includes upper and lower shafts, bushings, and Grade 8 hardware for installation.

C30 SPECIFIC

NOTE: ALL CONTROL ARMS ARE DESIGNED TO USE PROFORGED BALL JOINTS. .

The 1973-87 Chevy Pickup Front Dropmember suspension system is designed to replace the factory cross-member and steering system. It is engineered as a modular bolt-in unit that requires no welding.
When combined with a 2.5” drop spindle, 29” tall tire, and Porterbuilt Tubular Control Arms, the Level 3 Front will set the lowest point of the factory frame rails on the ground when fully deflated.

Ride Height - 4"
Deflated Height - Lay Frame

The 1973-87 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

The 1973-87 Chevy C30 Front Dropmember suspension system is designed to replace the factory cross-member and steering system. It is engineered as a modular bolt-in unit that requires no welding.
When combined with our C30 specific 3” drop spindle, 29” tall tire, and Porterbuilt Tubular Control Arms, the Level 3 Front will set the lowest point of the factory frame rails on the ground when fully deflated.

Ride Height - 4"
Deflated Height - Lay Frame

The 1973-87 Chevy C30 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

The 1973-87 Chevy Pickup Front Dropmember Coilover suspension system is designed to replace the factory cross-member and steering system. It is engineered as a modular bolt-in unit that requires no welding.
When combined with a 2.5” drop spindle, 29” tall tire, and Porterbuilt Tubular Control Arms, the Level 2 Front will set the bottom of the cab approx. 4-6" inches off the ground at ride height.

Ride Height - 4-6"

The 1973-87 Chevy Pickup Rear Level 2 Coilover Dropmember suspension system is engineered to improve ride quality, performance, aesthetics, and strength.

Ride Height - 4-6"

The 1973-87 Chevy Pickup Front Dropmember suspension system is designed to replace the factory cross-member and steering system. It is engineered as a modular bolt-in unit that requires no welding.
When combined with a 2.5” drop spindle, 29” tall tire, and Porterbuilt Tubular Control Arms, the Level 1 Front will the lowest point of the factory frame rails approx. 3” off the ground when fully deflated.

Ride Height - 6-7"
Deflated Height - 3"

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"

The 1973-87 Chevy Pickup Front Dropmember Coilover suspension system is designed to replace the factory cross-member and steering system. It is engineered as a modular bolt-in unit that requires no welding.
When combined with a 2.5” drop spindle, 29” tall tire, and Porterbuilt Tubular Control Arms, the Level 1 Front will set the bottom of the cab approx. 7-9" inches off the ground at ride height.

Ride Height - 7-9"

The 1973-87 Chevy Pickup Rear Level 2 Coilover Dropmember suspension system is engineered to improve ride quality, performance, aesthetics, and strength.

Ride Height - 7-9"

The new Porterbuilt sway bar is manufactured in-house and is available for trucks equipped with PB Fab control arms and the factory crossmember. It comes raw and includes all mounting hardware.

The new Porterbuilt sway bar is manufactured in-house and is available for Version 7 Dropmember equipped trucks. It comes raw and includes all mounting hardware.

The new Porterbuilt sway bar is manufactured in-house and is available for early Dropmember equipped trucks. It comes raw and includes all mounting hardware.

Tubular core support crossmember built using thick-wall 1.5" tubing & 3/16" steel.

Fits: 1973-87 Chevy Trucks

Tubular transmission crossmember built using thick-wall 1.5" tubing & 3/16" steel.

Fits: 1963-87 Chevy C10, C20, C30 Trucks

Boxed carrier bearing crossmember built using 3/16" steel.

Fits: 1973-87 Chevy Trucks

New Boxed Inner Frame Stiffener for Level 2 & Level 3 Dropmember Equipped Trucks

Fits: 1973-87 Chevy Trucks

Tubular rear frame crossmember built using thick-wall 1.5" tubing & 3/16" steel.

Fits: 1973-87 Chevy Trucks

If you are looking for the best possible kit to convert your truck to air suspension but maintain your factory front crossmember, this is the kit for you. The Porterbuilt Stage 2 Deluxe Front Kit for '63-'87 Chevy Trucks replaces your factory control arms and coil springs, lowering your truck and improving handling, without replacing the factory front crossmember.

The Porterbuilt Stage 2 Basic Front Kit for '63-'87 Chevy Trucks improves ride quality and overall driveability by replacing the factory lower control arms and and factory coil spring with an air spring.

Looking for an easy way to switch over to air suspension without breaking the bank? The Stage 1 front kit is an inexpensive and simple way to do just that! The Stage 1 front kit is designed to replace the factory steel coil spring with an air spring while maintaining the factory control arms.

NOTE: ALL CONTROL ARMS ARE DESIGNED TO USE PROFORGED BALL JOINTS. .