Chevy / GMC Truck

The 1955-59 Chevy Pickup Front Dropmember suspension system is a modular bolt-in sub-frame assembly engineered to incorporate Porterbuilt and C10 based suspension components.
When combined with a 2.5” drop spindle, 28” tall tire, and Porterbuilt Tubular Control Arms, the Level 3 Front will set the lowest point of the factory sheet metal on the ground when fully deflated.

Ride Height - 4"
Deflated Height - Lay Frame

The 1955-59 Chevy Pickup Rear Airbag Dropmember suspension system is engineered to lay body with large diameter wheel/tire combinations. (Recommended to run no wider than a 10” wheel)

Ride Height - 4"
Deflated Height - Lay Body"

The 1955-59 Chevy Pickup Front Dropmember suspension system is a modular bolt-in sub-frame assembly engineered to incorporate Porterbuilt and C10 based suspension components.
When combined with a 2.5” drop spindle, 28” tall tire, and Porterbuilt Tubular Control Arms, the Level 2 Front will set the bottom of the cab approx. 5-6" inches off the ground at ride height.

Ride Height - 5-6"

The 1955-59 Chevy Pickup Rear Coilover Dropmember suspension system is engineered to improve ride quality, performance, aesthetics, and strength.

Ride Height - 5-6"

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.

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

Fits: 1955-59 Chevy Trucks

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

Fits: 1955-59 Chevy Trucks

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

Fits: 1955-59 Chevy Trucks

Boxed Trailing Arm Crossmember built using 3/16" steel for a 2-piece driveshaft configuration.

Fits: 1955-59 Chevy Trucks

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

Fits: 1955-59 Dropmember Equipped Chevy Trucks