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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 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

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

Fits: 1963-72 Chevy Trucks

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

Fits: 1973-87 Chevy Trucks

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

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

Fits: 1973-87 Chevy Trucks

Boxed trailing arm crossmember built using 3/16" steel.

Fits: 1963-72 Chevy Trucks

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

Fits: 1961-64 Ford Trucks

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

Fits: 1973-87 Chevy Trucks

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

Fits: 1963-66 Chevy Trucks

New Boxed Inner Frame Stiffener for Level 1 Dropmember, Static & Stock Suspension Trucks

Fits: 1963-72 Chevy Trucks

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

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.

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

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.

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

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.

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

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.

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

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

Ride Height - 5-6"

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

Ride Height - 7-8"

The 1963-72 Chevy Pickup Rear Level 2 Coilover Dropmember suspension system is engineered to improve ride quality, performance, aesthetics, and strength.

Ride Height - 7-8"

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