1-1/4" 48-Spline Hollow Sway Bar – 33" Long

1-1/4" 48-Spline Hollow Sway Bar – 33" Long – #179-3300

Build a properly matched sway bar system around this 1-1/4-inch hollow 4130 steel bar. Featuring .188-inch wall construction, black zinc plating, 48-spline ends, and 1 inch of spline length per side, it delivers the strength, corrosion resistance, and installation flexibility needed for custom performance suspension applications.

When paired with compatible sway bar arms and end links, the bar transfers load between the left and right suspension to help control body roll and improve chassis stability.

Key Features

• 4130 Alloy Steel: Manufactured from high-strength 4130 steel for the durability and torsional performance required in demanding suspension applications.

• Hollow .188-Inch Wall Construction: Reduces weight compared with a solid bar of the same outside diameter while providing dependable torsional resistance.

• Black Zinc-Plated Finish: Helps protect the steel against corrosion while providing a clean, uniform black appearance.

• 48-Spline Ends: Provides positive arm engagement and multiple indexing positions for setting the sway bar arms at the proper operating angle.

• 1-Inch Spline Length: Each end provides 1 inch of engagement for compatible sway bar arms.

• Universal Configuration: Suitable for custom chassis, truck, hot rod, pro-touring, racing, and fabrication applications.

Specifications

• Material: 4130 Alloy Steel

• Finish: Black Zinc Plated

• Length: 33

• Outside Diameter: 1-1/4"

• Wall Thickness: .188"

• Construction: Hollow

• Spline Pattern: 1-1/4" × 48

• Spline Length: 1" Per End
  

GSI Applications

This 33-inch 48-spline bar is used in GSI adjustable front sway bar kits for:

• 1963–1966 Chevy & GMC C10

• 1967–1972 Chevy & GMC C10

• 1973–1987 Chevy & GMC C10

It may also be used in properly designed universal or custom sway bar systems. Confirm the bar length, spline specifications, and suspension geometry before ordering it as a replacement.

Before Ordering

This listing is for the sway bar only. Measure the required overall bar length and confirm compatibility with your sway bar arms, mounting bushings, end links, and chassis layout.

Final sway bar performance is affected by the bar’s wall thickness, working length, arm length, and mounting geometry.

What’s Included

• (1) 1-1/4" × 48-Spline Hollow Sway Bar

Sway bar arms, bushings, mounts, end links, and installation hardware are sold separately.

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.