55-59 Truck Air Ride Backhalf

55-59 Truck Air Ride Backhalf - #110-8100-BH-A

**This product will have a lead time; please call to verify expected wait**

This air ride back half kit replaces the factory rear frame and suspension on 1955-1959 Chevy and GMC trucks. It is designed to pair with the GSI 1955-1959 front clip to create a complete, modern chassis capable of laying frame while maintaining proper suspension geometry and drivability.

The kit requires removal of the stock rear chassis section and uses an Inboard Parallel 4-Link with Billet Watts Links to control axle movement and accommodate wide wheel fitment. Firestone F9000 sleeve-style air bags are mounted behind the axle for consistent suspension travel and ride control.

Key Features

• Complete air ride backhalf system

• Designed to lay frame on up to a 31” tall tire

• Inboard-mounted air bags and 4-link for 15” wide wheel clearance

• Updated suspension geometry for improved drivability

• Uses Firestone F9000 air bags

• Designed for performance, stance, and reliability

Design & Manufacturing

• OEM chassis laser-scanned for accurate fitment
  

• Components laser cut on Amada CNC laser equipment

• CNC press brake formed for consistent fit

• Machined components produced in-house for strict quality standards

Fitment

• 1955-1959 Chevy & GMC Trucks

What’s Included 

• (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) Firestone F9000 Air Bags

• (2) Shocks
  

• (1) Hardware Bag & Instructions

Notes

• ASSEMBLY REQUIRED and ships on a pallet

• Designed for air ride applications only 

• This will convert a long bed to short bed

• Professional installation and welding recommended

• Intended for custom rear frame replacement setups

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

At GSI Machine & Fabrication, we offer a one-year warranty on all manufactured parts, covering defects upon inspection. However, we are not liable for personal or property damages resulting from misuse of our products. Note that warranties for non-manufactured parts, such as shocks or ball joints, must be handled directly with the part's manufacturer.

Orders may be canceled before shipment, except for special-order and custom items, such as chassis products and air ride suspension. Refunds for eligible returned items will exclude shipping costs and may incur additional fees. For cancellations or issues with orders, contact our customer support at 1 (877) 951-1890 or sales@gsimfab.com.

Customers are responsible for all customs fees, duties, and taxes on international orders. Once your package is shipped, we are not liable for damage, theft, or loss during transit. Please inspect your delivery promptly and report any issues within 48 hours. For international shipments, local policies may cause delays, and additional documentation may be required. Always ensure shipping details are accurate to avoid additional costs.