Celebrate a decade of GSIMFAB with our Limited Edition 2026 Classic Truck Calendar. This year, we’re taking a walk down memory lane, featuring 12 of the most iconic GSI builds from the last 10 years.
2026 Classic Truck Calendar is backordered and will ship as soon as it is back in stock.

Modernize Your Classic Truck
WITH SUPERIOR STRENGTH & RIDE QUALITY
Shop By Category
View allShop Exhaust Components
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GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 1.25 x 2.5
Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 1.50 x 2.5
Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 2.0 x 2.5
Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 2.5 x 2.5
★★★★★(1)Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 1.25 x 3.0
Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 1.5 x 3.0
★★★★★(1)Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 2.0 x 3.0
★★★★★(2)Regular price From $19.99Unit price /Unavailable -
GSI Machine and Fabrication
Stainless Steel Exhaust Hanger 2.5 x 3.0
★★★★★(2)Regular price From $19.99Unit price /Unavailable
Shop Suspension Components
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GSI Machine and Fabrication
63-72 Chevy & GMC C10 1.5" Rear Drop Block Kit (Bolt-On)
Regular price $125.00Unit price /Unavailable -
GSI Machine and Fabrication
63-72 Chevy & GMC C10 2.0" Rear Drop Block Kit (Bolt-On)
Regular price $125.00Unit price /Unavailable -
GSI Machine and Fabrication
73-87 Chevy & GMC C10 Rear Axle Flip Kit (Bolt-On)
Regular price $175.00Unit price /Unavailable -
GSI Machine and Fabrication
88-98 Chevy & GMC C1500 OBS Rear Axle Flip Kit (Bolt-on)
★★★★★(1)Regular price $175.00Unit price /Unavailable -
GSI Machine and Fabrication
Adjustable Rear Air Bag Mounts - 3" Axle (Weld-on)
★★★★★(2)Regular price $80.00Unit price /Unavailable -
GSI Machine and Fabrication
Direct-Axle Air Bag Mounts for 3" Axles - Slotted (Weld-On)
Regular price $40.00Unit price /Unavailable -
GSI Machine and Fabrication
Over Axle Air Bag Mounts for 3" Axles - Multi-Pattern (Weld-On)
Regular price $40.00Unit price /Unavailable -
GSI Machine and Fabrication
GSI D2600 Air Ride Suspension Airbag (Single 1/2" Port)
Regular price From $85.00Unit price /Unavailable
Shop Electrical Components
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GSI Machine and Fabrication
GSI Optima Battery Box Tray - Group 34/78
★★★★★(14)Regular price $60.00Unit price /Unavailable -
GSI Machine and Fabrication
GSI Optima Battery Box Tray - Group 34/78 (Frame Mount)
★★★★★(5)Regular price $125.00Unit price /Unavailable -
GSI Machine and Fabrication
GSI Odyssey Battery Box Tray - Group 34/78 PC1500
★★★★★(2)Regular price $140.00Unit price /Unavailable -
GSI Machine and Fabrication
GSI Interstate Battery Box Tray - Group 34 (Frame Mount)
Regular price $125.00Unit price /Unavailable
BED RAISE KIT
To create a flat, level mounting surface while maintaining proper bed alignment.
AXLE PACKAGE
Your axle package can be configured to suit the need of your build. Some of our most used packages are 3:50 gear with 31 spline axles.
BRAKE PACKAGES
We offer a variety of brake packages for maximum customization. Our most common brands include Wilwood and CPP
AIR MANAGEMENT
We have taken the guess work out of mounting your air management and created a seamless, easy to access mounting solution.

