Magorfas Tandem Trailer Leaf Spring 4-Leaf Set, 25-1/4 Eye-to-Eye, 1750 lb Each (3500 lb Trailer) SW4B Compatible

Overview

Upgrade your trailer suspension with the Magorfas Tandem Trailer Leaf Spring 4-Leaf Set. Engineered for round SW4B axles, each spring supports up to 1750 lb, enabling balanced performance when used as a pair on a 3500 lb trailer. The eye-to-eye length is 25-1/4 inches, with a free open measurement of 3 inches, a leaf width of 1-3/4 inches, a bushing diameter of 9/16 inch, and a leaf thickness of 5/16 inch. Crafted from 60Si2Mn manganese steel, this kit blends strength with a degree of flexibility to help absorb road irregularities over time.

The springs feature two coats of paint on the surface, delivering enhanced corrosion resistance for outdoor use. This kit is designed for trailers and is not intended for automobiles. A comprehensive hardware bundle is included to simplify installation and help you get back on the road with confidence.

Key features

• 4-leaf tandem design to share load across leaves
• Eye-to-eye length: 25-1/4 inches
• Open length: 3 inches
• Leaf width: 1-3/4 inches
• Bushing diameter: 9/16 inch
• Leaf thickness: 5/16 inch

What’s included

• 2 x EQ-E1 equalizers
• 6 x 3-inch tall hangers
• 8 x shackle straps
• 14 x 9/16-18 x 3 inch bolts and locknuts
• 8 x 5-1/2 inch long U-bolts (diameter 1/2 inch)
• 4 x tie plates for 1-3/4 inch leaf springs
• 16 x 1/2-20 hex nuts

Fitment and usage

Designed to fit SW4B round trailer axles, with a capacity of 1750 lb per spring for 3500 lb trailers. Please verify your trailer’s load rating to ensure the correct spring set is selected. Note that this kit is intended for trailer use and should not be used on cars, trucks, vans, or tractors.

Real-world benefits

Whether you’re tackling highway miles or rougher access roads, the tandem design aims to distribute weight more evenly across leaves, potentially enhancing stability and ride comfort. The included hardware kit is intended to simplify setup, with guidance on proper torque and alignment to help you achieve a secure install. While outcomes can vary by application, users often notice improved ride consistency and dependable suspension behavior when upgrading to a matched spring set like this one.

Installation and maintenance tips

• Follow the included notes and tighten nuts horizontally to avoid installation issues.
• Check load ratings and pairing on your trailer to maintain safe operation.
• Inspect the two-coat painted surface for chips or corrosion during routine maintenance.