LEAF SPRING US-1079: 1_3/4” wide, 4 Leaf, 13_1/4″ (25_1/4″) approx: 3,000 lbs.

Description

Generic Trailer Spring: 1_3/4” wide, 4 Leaf, 13_1/4″ (25_1/4″) approx: 3,000 lbs.
Repair or replace your trailer’s suspension with our double-eye leaf spring, also known as an eye-by-eye trailer spring, designed for reliable performance and optimum load carrying capacity on light duty trailers including RVs, campers, utility trailers, boat trailers, and equipment haulers. This is a common style of leaf spring that features an “eye” at both ends of the spring with nylon or brass bushings. This spring mounts either above or below the trailer axle and secures to standard hangers and shackles for a smooth, controlled ride. Built from heat-treated spring steel, each trailer spring is engineered to handle loads while reducing bounce, excessive friction, and sway on the roughest of roads. Whether you’re replacing worn springs, upgrading your suspension, or building a new trailer, these springs offer a perfect combination of strength, stability, and durability. These are available in a variety of leaf counts and weight ratings to match your axle capacity. Our double eye leaf springs are ideal for single, tandem, or triple axle trailer configurations.

US-1079 Key Dimensions & Specifications

The leaf spring US-1079 measures 25-1/4 inches eye to eye, making accurate measurement especially important before ordering. Key specifications include:

• Listed capacity: Approx. 3,000 lbs
• Leaf count: 4 leaves
• Pack thickness: 1.56 inches
• Width: 1-3/4 inches
• Free arch: 3 inches
• Spring-eye ID: 9/16 inch (.562 inches)
• End measurements: 13-1/4 inches

Target Axle & Trailer Applications

The US-1079 is suited for compatible medium-duty trailer applications that require a shorter 25-1/4-inch double-eye spring. Common uses include: 

• Enclosed cargo trailers
• RVs and campers
• Utility trailers
• Boat trailers
• Specialty equipment haulers

When matched correctly to the suspension and axle specifications, this spring can provide stable load support without requiring the longer 26-inch spring used on other configurations.

25-1/4″ vs. 26″ Leaf Springs: Measuring for the Right Fit

A 25-1/4-inch spring should not automatically be replaced with a 26-inch model. Even a small difference can affect hanger and shackle geometry. 

For the most accurate fit, measure from the center of one spring eye to the other on an unmounted spring, or verify the trailer’s hanger spacing rather than measuring along the spring’s curve.

Recommended Replacement Hardware

Installing a replacement spring is also a good time to inspect the surrounding suspension hardware. Depending on your setup, the US-1079 may be paired with: 

• Properly sized 9/16-inch x 3-inch shackle bolts
• 1-3/4-inch U-bolt plates
• Shackles 
• Bushings
• Double-eye trailer hanger components. 

You should always confirm all hardware dimensions and axle requirements before installation.

Whether you’re replacing worn springs, upgrading your suspension, or building a new trailer, these springs offer a perfect combination of strength, stability, and durability.