Aeagle 4-Leaf Double-Eye Trailer Springs, 25-1/4in Eye-to-Eye, 1,750 lb Each (Pair), Rust-Resistant

Aeagle 4-leaf double-eye trailer springs are a pair of heavy-duty replacement springs rated 1,750 lb each, designed to support 3,500 lb tandem-axle trailers with a 25-1/4" eye-to-eye length.

If you need a dependable, direct-replacement leaf spring set for round trailer axles, this Aeagle kit delivers two 4-leaf, double-eye springs built for load stability and corrosion resistance. Each spring is supplied with pre-installed bushings and a rust-protective finish, making them ready to install for many towing needs. These springs are engineered to match common SW4B-fit applications and are not compatible with square-axle setups.

Will these springs fit my trailer axle and trailer weight?

These springs suit round axles and are intended for trailers with a combined axle capacity of about 3,500 lb (1,750 lb per spring). Confirm your trailer uses round axle housings and that the eye-to-eye length matches.

• Rated capacity: 1,750 lb per spring (pair supports 3,500 lb)
• Eye-to-eye length: 25-1/4" (measure your current spring)
• Designed for round axles only — not for square-axle applications
• Replaces common SW4B-style springs

How are these springs built for durability and long service?

Aeagle uses thicker leaf material and a protective coating to resist wear and corrosion under road exposure. Each leaf assembly is constructed from high-quality raw steel and finished with an anti-rust layer to extend service life in wet or salty environments.

• Leaf thickness: 5/16" per leaf for strength and fatigue resistance
• Protective anti-rust coating to reduce corrosion
• Quality raw material selection to improve longevity
• Factory-tested units with a 12-month warranty

What are the exact dimensions and hardware included?

The kit arrives ready to mount with two installed bushings per spring and clear dimensional specs to match existing mounts. These details help ensure a straightforward swap without sourcing separate bushings.

• Width of leaf pack: 1.75" (1-3/4")
• Free (open) arch: 3" when unloaded
• Bushing diameter: 9/16" — two bushings installed per spring
• Four leaves per spring, delivered as a pair (2 springs)

How should I approach installation and maintenance?

Installation typically follows the same steps as standard double-eye leaf springs, but always verify fitment and torque specifications for your trailer. Routine inspections and keeping the springs clean will prolong service life.

• Compare eye-to-eye and bushing dimensions before purchasing
• Use correct shackles, U-bolts, and torque specs for your axle type
• Inspect for wear, cracks, or loose hardware periodically
• Touch up coating if paint is chipped to prevent corrosion

Who is this for: This Aeagle 4-leaf double-eye spring pair is aimed at trailer owners, small-fleet operators, and DIY mechanics who need a robust, ready-to-install replacement for round-axle trailers rated around 3,500 lb. Choose this kit if you require straightforward bolt-in replacement springs with installed bushings, clear dimensional specs (25-1/4" eye-to-eye, 3" free arch), and corrosion-resistant treatment to withstand regular towing conditions.