GSI Machine and Fabrication

55-59 Truck Coilover Front Clip & Backhalf

55-59 Truck Coilover Front Clip & Backhalf

Regular price $13,000.00 USD
Regular price Sale price $13,000.00 USD
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55-59 Truck Coilover Front Clip & Backhalf - #110-8100-C

This complete front and rear coilover suspension package replaces the original front and rear chassis sections on 1955-1959 Chevy and GMC trucks with a modern, fully engineered coilover system designed to aggressively lower stance, improve handling, and enhance drivability. This product bundles both the front clip and rear back half into one purchase for a matched suspension solution. 

Both kits are engineered and manufactured at our facility in Chandler, Arizona, using Amada laser-cut and CNC-formed ASTM A1011 components to ensure consistent fitment and strength.


Front Suspension Overview

  • Full front clip suspension replacement requires removal of the stock front chassis

  • Uses 73-87 half-ton Chevy spindles for correct installation

  • Upgraded to power steering rack & pinion

  • Works with stock clamshell motor mounts for GM 350, with LS engine compatibility using an adapter plate (Sold Separately)


Rear Suspension Overview

  • Rear back half suspension replacement requires removal of stock rear chassis

  • Inboard parallel 4-link suspension for 15” wide wheel clearance

  • Billet Watts Link for lateral axle control

  • Adjustable coilover mounting allows 4"-8" frame height

Fitment

  • 1955-1959 Chevy & GMC Trucks

  • Works with clamshell-style motor mounts with a GM 350

  • Supports Small Block, Big Block, LS, & LT4/LT5 engines

  • Motor mounts & rubber clamshells sold separately 

  • A low-profile oil pan required for all engine configurations

     

     -   Holley LS P/N: 302-2

     -   Speed Engineering P/N: 26-1042

  • Recommended wheel specs:

 -   20" x 9" with 6" Backspace

 -   22" x 9" with 6" Backspace

  • Maximum wheel specs:

 -   24" x 9 or 10" with 6" Backspace (Max) 

Spindle options:

- CPP Stock Spindles - Factory height spindle with the spindle pin located at the bottom, maintaining original suspension geometry and ride height.

- CPP 2.5" Drop Spindles - Lowers the vehicle 2.5" by relocating the spindle pin higher while retaining full suspension travel and stock 11"–12" brake kits.

- CPP 2.5" Modular Drop Spindles - Lowers the vehicle 2.5" using a modular hub design, offering increased clearance for aftermarket 13"–14" brake kits.


What’s Included (Front Clip)

  • (1) Main Crossmember & Frame Rails with Logo

  • (2) Engine Perches

  • (2) Upper Control Arms

  • (2) Lower Control Arms 

  • (2) Upper Ball Joints

  • (2) Lower Ball Joints

  • (1) Rack & Pinion with Aluminum Bushing Set

  • (2) Coilover Shocks

  • (2) Tie Rod Adapters

  • (2) CPP Spindles (Stock, 2.5" Drop, Or Modular 2.5" Drop)

  • (1) Hardware Bag & Instructions

What’s Included (Backhalf)

  • (1) Welded Rear Frame Rails

  • (1) Bridge Assembly

  • (2) Billet Watt’s Links (With Jam Nuts, Heim's & Misaligns)

  • (1) Watt's Link Center Pivot 

  • (1) Watt's Link Mount Bar 

  • (2) Frame Reinforcement Plates

  • (4) Adjustable 4-Link Bars

  • (8) Rod Ends (With Jam Nuts, Crush Sleeves, Bushings, & Zerk Fittings)

  • (2) 4-Link Axle Mounts (x1 Circle, x1 Oval)

  • (2) Coilover Shocks

  • (1) Hardware Bag & Instructions

Notes

  • Kit requires welding and ships on a pallet

  • Designed for coilover applications only 

  • This will convert a long bed to short bed

  • Removal of inner fender wells is required

  • Power steering hoses and fittings not included

  • Steering shafts and U-joints not included 

  • Rack and pinion is Mustang II style with 3/4-36 spline 

California Proposition 65 Warning

Cancer and Reproductive Harm – www.p65warnings.ca.gov


Questions? Contact Us

(480) 940 1806 – Local
1 (877) 951-1890 – Toll Free

SKU: 110-8100-C

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