Finding the right double eye leaf springs can improve ride quality, durability, and load handling for trailers. This guide highlights five top options across different capacities and leaf counts, helping you compare fit, material, and compatibility. Each choice features double-eye mounts, standardized lengths, and durable manganese steel construction to resist fatigue and corrosion. Use the buying guide below to weigh capacity, length, and installation details before purchasing.
Summary of Selected Products
| Product | Brand | Leaves | Capacity (per spring) | Eye To Eye Length |
|---|---|---|---|---|
| Magorfas Trailer Leaf Spring 4 Leaf Double Eye | Magorfas | 4 | 1750 lb | 25-1/4″ |
| Double Eye Spring (4-Leaf) – 1,750 Lb | RIGID | 4 | 1750 lb | 27″ |
| Magorfas Trailer Leaf Spring 5 Leaf Double Eye 3000 lbs | Magorfas | 5 | 3000 lb | 25-1/4″ |
| Aeagle 5 Leaf 3000lb Capacity Double Eye | Aeagle | 5 | 3000 lb | 25-1/4″ |
| Youxmoto 3500lb Kit, 4 Leaf Double Eye | Youxmoto | 4 | 1750 lb (per spring) | 25-1/4″ |
Magorfas Trailer Leaf Spring 4 Leaf Double Eye 1750 lbs
Specifications show a 4-leaf configuration with an eye-to-eye length of 25-1/4″, 3″ free open, and 1-3/4″ leaf width. The springs use 60Si2Mn manganese steel for strength and flexibility, with two coats of paint for corrosion resistance. Bushing diameter is 9/16″ and leaf thickness is 5/16″. Fitment targets SW4B trailers, with a 1750 lb capacity per spring (3500 lb per axle). This option emphasizes durability for mid-range trailers and emphasizes load rating checks to ensure proper fit.
Double Eye Spring (4-Leaf) – 1,750 Lb
This option explains the free length (27″), number of leaves (4), and free arch (2.88″). It provides a clear definition of how the spring is measured and what the 4-leaf assembly entails. The product is meant for double-eye mounting and is described in terms of its basic dimensions and load characteristics, useful for users comparing per-spring capacity and overall trailer compatibility.
Magorfas Trailer Leaf Spring 5 Leaf Double Eye 3000 lbs
With 5 leaves and a 25-1/4″ eye-to-eye length, this spring family handles higher capacity: 3000 lb per spring (6000 lb per axle). It uses 60Si10Mn manganese steel and coating for corrosion resistance. Similar 3″ free open and 9/16″ bushing diameter align with SW5 trailer configurations, making it suitable for heavier apps that need extra load distribution and longevity.
Aeagle 5 Leaf 3000lb Double Eye Spring
Replaces SW5 with a 25-1/4″ eye-to-eye length and 3″ free open. The 5-leaf arrangement yields a 3000 lb per-spring capacity suitable for heavier trailers, including those in the 6000 lb axle family. The design uses 60Si10Mn manganese steel with a painted finish offering corrosion resistance. Bushing diameter is 9/16″, matching standard hangers and mounting hardware.
Youxmoto 3500lb Kit: 4 Leaf Double Eye Springs
This kit includes 4 leaf springs plus U-bolts and mounting hardware, designed for SW4B trailers. Eye-to-eye length is 25-1/4″, with 3″ free open and 1-3/4″ leaf width. Each spring delivers 1,750 lb capacity (per spring), giving a combined 3,500 lb capacity per pair. Bushing diameter is 9/16″, and the kit emphasizes a horizontal nut tightening recommendation to ensure proper use and longevity of the assembly.
Buying Guide
Capacity and axle compatibility: Start by matching the per-spring capacity to your trailer’s axle rating. For example, 1750 lb per spring is common for 3,500 lb axles, while 3000 lb per spring suits heavier 6,000 lb systems. Always verify the total axle capacity and distribute loads evenly across springs.
Leaf count and stiffness: More leaves generally offer greater load distribution and rigidity. A 4-leaf set will feel different from a 5-leaf setup and may affect ride quality and bounce. Consider the expected load, terrain, and towing frequency when choosing leaf count.
Material and finish: Most options use manganese steel (60Si2Mn or 60Si10Mn) for strength and durability. A painted or coated finish improves corrosion resistance, extending spring life in outdoor environments.
Dimensions and compatibility: Key measurements include eye-to-eye length, leaf width, free arch, and bushing ID. Confirm these dimensions with your existing hangers, brackets, and axle design to prevent fit issues.
Installation notes: Some products include hardware (U-bolts, plates) while others require separate fittings. Pay attention to installation orientation and torque guidance—horizontal nut tightening is sometimes emphasized to maintain proper clamp load and alignment.
Replacement timelines: If you regularly trailer heavy loads, inspect springs for cracks, wear, or rust during maintenance. Replacing springs in pairs ensures balanced suspension behavior and safety.
Brand and warranty: Reputable brands like Magorfas, Aeagle, and RIGID offer documented specs and support. Review any product warranties and return policies before purchasing to safeguard against manufacturing defects.