55-59 Truck Air Ride Chassis

55-59 Truck Air Ride Chassis - #CHASSIS5559-AIR

The GSI '55-'59 Chevy / GMC Air Ride Chassis is designed for builders who want their truck fully slammed, riding on modern suspension geometry. This chassis is meant to lay frame while delivering modern handling, increased structural strength, and a heavily refined ride quality. 

Hand-fabricated and fully welded by professional fabricators, each chassis is constructed using MIG and TIG welding and precision-manufactured components for uncompromising strength and consistency.

Designed to Lay Frame

This chassis was engineered using laser-scanned OEM frame data to support accurate vehicle-specific fitment and true frame-laying capability. Optimized suspension geometry is designed to minimize camber change and bump steer throughout suspension travel while maintaining stable alignment at ride height.

Integrated features such as GSI Lower Control Arm Alignment Cams and the GSI Tie Rod Adapter Kit make dialing in alignment simple while maintaining proper steering geometry, even when the truck is laid out.

The rear suspension and notch system support extreme lowering and accommodate wide wheel setups up to 24” x 15”, making this chassis ideal for high-end street trucks, show builds, and performance-focused rides.

A Serious Foundation

Primary chassis and suspension systems arrive installed, with select components and some optional add-ons shipped boxed separately on the pallet as needed. The foundation is now just about ready to accept a body, brakes, drivetrain, wheels, and hard lines with no guesswork.

Precision Manufacturing

• Laser-scanned OEM chassis data

• CNC laser-cut components

• CNC press brake forming

• Full in-house CNC machine shop

• Built for proper fit from start to finish

What’s Included

• Front D2600 Air Bags

• Rear Firestone F9000 Air Bags

• Boxed Sheet Metal Upper & Lower Control Arms 

• Upper & Lower Ball Joints

• GSI Tie Rod Adapter Kit

• Chassis Stiffener

• Axle Housing

• Billet Watt’s Links

• Rear Four-Link Suspension

• Rear Frame Notch & Bridge 

• Frame Rails

• Shocks
  

• Carrier Bearing Mount

• Mustang II Power Steering Rack (Premium Flaming River rack upgrade available)

• Engine Perches (LS engine mounts sold separately)

Optional Add-Ons Available:

• Axle Third Member 

• Axle Package (31 or 35 Spline) 

• Aftermarket Brake Kits (Wilwood or CPP)

• Bed Raise Kit 

• Fuel Tank (EFI/Non-EFI)

• Front Sway Bar

• Rear Sway Bar

• Rack & Pinion Upgrade (Flaming River)

• Motor Mounts (SBC/BBC/LS/LT4/LT5) 
  

• Wheels & Tire Packages
  

Click to Start Chassis Quote

Shipping

• Ships as freight on a reinforced & wrapped pallet

• Quote required

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.