Aeagle 25-1-4 inch 4-Leaf Double Eye Spring – 1750lb per Spring, 3500lb Trailer Axle Kit with U-Bolt (2PCS)

Upgrade Your Trailer Suspension with Aeagle

Enhance load handling and drive comfort with Aeagle’s 25-1/4 inch, four-leaf double-eye springs. Crafted for round axles, this kit combines two high-capacity springs with a full U-bolt installation package. Each spring is rated for 1,750 pounds, and when paired, supports up to 3,500 pounds per trailer. The result is a balanced blend of stiffness and travel, designed to absorb rough roads while keeping tires in better contact with the surface. The anti-rust coating adds an extra layer of durability, helping the assembly resist road spray and weather over time.

Use this kit on the right axle setup to experience a more predictable ride, especially under heavier loads or uneven road surfaces. While individual results can vary, the configuration is intended to offer improved stability and tire contact, contributing to safer handling on longer trips or frequent hauls.

What’s Included

• 2 x 4-leaf double-eye springs
• 3500 lbs axle U-bolt kit (4 x 5-1/2" U bolts, 1/2" thread diameter, 2" thread length, 2 4/9" inside diameter)
• 2 x tie plates for 1-3/4" leaf springs
• 8 x 1/2"-20 hex nuts

Key Specifications

• Capacity: 1,750 lb per spring (3,500 lb per trailer with pair)
• Eye-to-eye length: 25-1/4"
• Free open: 3"
• Leaf width: 1-3/4"
• Leaves: 4
• Bushing diameter: 9/16" (2 bushings installed per spring)
• Leaf thickness: 5/16"

Compatibility and Installation Notes

• Replaces part number SW4B
• Not compatible with square axles; designed for round axles only
• Fits 2-3/8" diameter round trailer axles
• Note: tighten nuts horizontally to ensure the best final fit

Durability and Assurance

All components feature a corrosion-resistant coating and are produced from high-quality materials to support long-term use. Each kit undergoes testing before shipping, and a 12-month warranty provides additional confidence in performance and reliability.

Bottom Line

For trailers that rely on solid, dependable suspension on standard round axles, this Aeagle kit offers a comprehensive solution with clear compatibility, substantial capacity, and durable hardware. Consider it as a practical upgrade to help manage heavier loads and rough road conditions without expecting guarantees.