6 Leaf Spring for Trailer: 5 Top Picks Compared

Upgrading or replacing your trailer’s suspension is a big decision. A quality 6 leaf spring set can make all the difference in ride stability and load support. Whether you’re hauling equipment, a boat, or a utility trailer, choosing the right spring ensures a safer, smoother journey.

This guide compares five top-rated 6 leaf spring options to help you find the perfect match for your trailer’s axle and weight requirements. We break down each product’s features, pros, and cons so you can make an informed choice.

Aeagle 6 Leaf Double Eye – Reliable 3500 lb Pair

The Aeagle 6 Leaf Double Eye spring set is built for 7000 lb trailers, with each spring supporting 3500 lbs. Its 25-1/4 inch eye-to-eye length and 3 inch free arch fit many standard trailer setups. The 6-leaf design uses high-quality raw materials and an anti-rust coating to resist corrosion, promising long-term durability even in tough conditions.

You get two springs in the pack, each with a 1-3/4 inch leaf width and 9/16 inch bushing diameter. This set replaces part number SW6 and is a straightforward upgrade for your trailer’s suspension. If you need a balanced, corrosion-resistant pair for your 7000 lb axle, this is a solid choice.

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• Replaces for Part Number: Replaces SW6
• Includes: 2 x 6-Leaves Double Eyes Springs
• Product Parameters: 3500 lb Capacity Per Spring For 7000 lbs Trailers; Eye to Eye length: 25-1/4 inch; Free open: 3 inch; width of leaf: 1-3/4 inch; 6 leaves; 9/16 inch bushing dia
• Product Durability: Our trailer leaf spring kit with anti-rust coating, and has good corrosion resistance. We always choose raw material with high quality to make our products strong and durable. To ensure reliable performance
• Quality Assurance: 12-month warranty! Tested before shipping

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dreamdragon 6-Leaf Slipper – Heavy-Duty 4000 lb Capacity

The dreamdragon 6-Leaf Slipper spring is designed for serious loads, offering a 4000 lb capacity per spring for 8000 lb axles. Its 29-1/2 inch free length and 3-1/2 inch free arch provide extra clearance and smooth operation under heavy weight. The 2 inch leaf width and 6-leaf build add strength for demanding applications.

This set includes two springs with a slipper (hook) end design, making it ideal for specific trailer configurations. The 9/16 inch bushing diameter ensures compatibility with many mounting setups. If you need maximum capacity for an 8000 lb axle, this spring delivers reliable support.

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• Each Trailer Leaf Spring offers a 4,000 lbs capacity, making it an ideal choice for standard 8,000 lbs trailer axles, providing reliable load support for heavy-duty trailer
• Designed with a 29-1/2" free length from the center of the eye to the end of the hook and a 3-1/2" free open height, this Trailer Leaf Spring ensures smooth operation under heavy loads.
• With a 2" leaf width, 6-leaf design, and a 9/16" bushing diameter, this spring is engineered for optimal durability and long-lasting performance, even in tough conditions.
• Accessory Kit: 2pcs 6 leaf springs
• Trailer Leaf Spring Note! These leaf springs kit are ONLY designed for the trailer. Any questions after receiving Trailer Axle Suspension Kit , please contact us freely

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dreamdragon 6 Leaf 7000lb Kit – Complete Suspension Set

The dreamdragon 6 Leaf 7000lb kit is a comprehensive solution for tandem trailer axles. It includes four 3500 lb leaf springs (25-1/4 inch eye-to-eye, 3 inch free arch) plus a full U-bolt set with eight long U-bolts, hex nuts, spring washers, and tie plates. Everything you need for a complete suspension overhaul is in one box.

Each spring has a 1-3/4 inch width and 9/16 inch bushing diameter, built with 6 durable leaves. The U-bolt kit is designed for 3 inch diameter round axles rated 5200-7000 lbs. This all-in-one package saves you time sourcing separate parts and ensures a matched system for your 7000 lb trailer.

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• This suspension kit includes 3,500 lbs capacity per leaf spring, designed for standard 7,000 lbs trailer axles, providing reliable performance for both light and heavy-duty applications.
• The leaf springs feature a 25-1/4" Eye to Eye length, 3" free open, 1-3/4" width, and are built with 6 durable leaves and a 9/16" bushing diameter for long-lasting use.
• Accessory Kit: 4pcs 6 leaf springs, 8pcs long U bolts, 16pcs hex nuts, 16pcs spring washers, 4pcs tie plates for leaf springs
• The package includes a 5,200-7,000 lbs axle U-bolt kit, featuring 4 x 7" long U-bolts, 2 tie plates, and 8 hex nuts, all designed for 3" diameter round axles.
• Trailer Leaf Spring Note! These leaf springs kit are ONLY designed for the trailer. Any questions after receiving Trailer Axle Suspension Kit , please contact us freely

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Aeagle 6 Leaf Double Eye 4-Pack – Full Set for Tandem

The Aeagle 6 Leaf Double Eye 4-pack provides four springs, each rated at 3500 lbs for a total 7000 lb axle capacity. With a 25-1/4 inch eye-to-eye length and 3 inch free arch, these springs match standard tandem trailer setups. The 6-leaf construction and anti-rust coating ensure long-lasting performance.

Each spring has a 1-3/4 inch leaf width and 9/16 inch bushing diameter, replacing part SW6. This set is ideal if you need to replace all springs on a tandem axle trailer at once. Note that it only fits round axles, so check your axle type before ordering.

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• Replaces for Part Number: Replaces SW6,not fit square axle,Only fit round axle.
• Includes: 4 x 6-Leaves Double Eyes Springs
• Product Parameters: 3500 lb Capacity Per Spring For 7000 lbs Trailers; Eye to Eye length: 25-1/4 inch; Free open: 3 inch; width of leaf: 1-3/4 inch; 6 leaves; 9/16 inch bushing dia
• Product Durability: Our trailer leaf spring kit with anti-rust coating, and has good corrosion resistance. We always choose raw material with high quality to make our products strong and durable. To ensure reliable performance
• Quality Assurance: 12-month warranty! Tested before shipping, perfect match to the factory part.

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Dorman 929-1052 – Direct Replacement 2500 lb Spring

The Dorman 929-1052 is a 6-leaf utility trailer spring with a 2500 lb capacity. Its eye/eye design features a 30 inch length and 4-5/8 inch arch, making it a direct replacement for many original springs. Built from quality materials to strict specifications, it offers reliable performance and long service life.

This spring is an ideal solution if your original leaf springs are damaged from overloading, collision, or corrosion. Dorman is a trusted aftermarket brand in the USA, so you can count on consistent fit and function. If you need a 2500 lb capacity spring with a longer length, this is a top choice.

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• Direct replacement – these leaf springs are designed to match the fit and function of the original leaf springs on specific vehicles or trailers
• Ideal solution – seamlessly replaces leaf springs damaged by overloading, collision, cracking or corrosion, or are due for replacement
• Durable construction – made from quality materials to strict specifications to ensure reliable performance and long service life
• Trustworthy quality – engineered, manufactured and supported by the premier aftermarket leaf spring provider in the USA
• Support available – every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team

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Buyer’s Guide: What to Consider

Choosing the right 6 leaf spring involves a few key factors. Use this guide to match the spring to your trailer’s axle and load requirements.

• Capacity per Spring: Match the spring's load rating to your trailer's axle capacity. For a 7000 lb axle, use two 3500 lb springs. For 8000 lb, choose 4000 lb springs.
• Spring Length & Arch: Measure eye-to-eye length and free arch to ensure proper fit. Common lengths are 25-1/4 and 30 inches. Arch affects ride height and clearance.
• Leaf Width & Count: Standard width is 1-3/4 inches, but some heavy-duty springs use 2 inches. Six leaves provide a good balance of strength and flexibility.
• End Type: Eye vs. Slipper: Double eye springs fit most trailers. Slipper (hook) ends are used on some designs. Check your existing spring's end type before ordering.
• Axle Compatibility: Most springs fit round axles only. Verify your axle shape (round or square) and bushing diameter (commonly 9/16 inch) for proper installation.

Conclusion

Selecting the best 6 leaf spring for your trailer comes down to matching capacity, length, and end type to your specific axle. For standard 7000 lb trailers, the Aeagle or dreamdragon kits offer great value. If you need higher capacity for an 8000 lb axle, the dreamdragon slipper spring is a strong choice.

For a direct replacement on lighter trailers, the Dorman spring provides trusted quality. Always double-check your axle type and measurements before purchasing to ensure a perfect fit.