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3,500 lb Axles 25.25" 4-Leaf Double Eye Trailer Springs 1-3/4" Wide Hanger Kits


Regular price $73.99
Shipping calculated at checkout.
kit

Care information

To ensure optimal performance and extend the service life of your new trailer components, please follow these care guidelines after purchase:

  • Before installation, check all parts for shipping damage or missing components. Do not install damaged parts.
  • Always use correct tools and torque settings. Improper installation can lead to premature wear or failure.
  • For bearings, suspensions, and brake components, apply high-quality trailer grease before first use if not pre-greased.
  • Some parts (like brake assemblies) require a short break-in period to achieve full performance. Follow manufacturer instructions for best results.
  • Recheck fasteners, grease levels, and moving components after 100 miles of towing, then at regular intervals.
  • After exposure to water, road salt, or mud, clean and dry parts thoroughly. Apply anti-rust treatment if needed.
  • If storing unused parts, keep them in a dry, sealed container away from moisture and direct sunlight.

Delivery and Shipping

Handling Time: Orders ship out within 1 business day after payment is received.

Shipping Methods: We use trusted carriers like UPS, FedEx, or USPS based on package size and destination.

Delivery Time: Estimated delivery within 2–6 business days (U.S. domestic orders).

Tracking: A tracking number will be provided once your order is dispatched.

What's include:

1 Pair + 1 U-Bolt Kit + Hanger Kit for single axle: 

(2) 4-leaf double eye springs
(4) U-bolts – 5.5", for 2-3/8" axle, 1/2"-20 thread
(2) Tie plates
(8) Nuts & lock washers
(2) Front hangers (1-1/2")
(2) Rear hangers (7/8")
(4) Shackle straps – 2-5/8" (9/16" holes)
(6) Shackle bolts – 3" × 9/16"
(6) Lock nuts

2 Pair + 2 U-Bolt Kit + Hanger Kit for tandem axle: 

(4) 4-leaf double eye springs
(8) U-bolts
(4) tie plates
(16) nuts & lock washers
(6) Hangers (2 front, 2 rear, 2 center)
(2) Equalizers – 7-3/4"
(8) Shackle straps
(14) Bolts
(14) Lock nuts

1 Pair + 1 U-Bolt Kit 

(2) 4-leaf double eye springs
(4) U-bolts – 5.5", for 2-3/8" axle, 1/2"-20 thread
(2) Tie plates
(8) Nuts & lock washers

Key Features

Built for 3,500 lb Axles – Each spring rated at 1,750 lbs for a total capacity of 3,500 lbs per axle.

Heavy-Duty Steel Construction – Made from 60Si2Mn manganese steel, heat-treated for strength, and finished with corrosion-resistant coating.

OEM Compatibility – Direct replacement for SW4B, LIB-401-DE, 124903, PR4B.

Smooth Ride – Double-eye design for stable, balanced suspension when paired with standard hangers.

Multiple Kit Options – Available as springs only, with U-bolt kits, or with complete hanger kits for full suspension replacement.

OEM & Compatibility

Replaces: SW4B, LIB-401-DE, 124903, PR4B, A226, K71-403-00
Fits: Standard 3,500 lb axles with 1-3/4" wide double eye leaf springs
Axle Types: Utility, boat, cargo, and livestock trailers

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