Best 6 Leaf Spring For Trailer: Double-Eye and Slipper Options

#1 · Best Overall

1. Aeagle Trailer Spring

• Weight: 75.7 lb
• Package Dimensions: 29.05 x 12 x 6 in

Best for: Round-axle SW6 replacement.

Why it ranks #1: Four 6-leaf double-eye springs suit 7,000-pound axles at 3,500 pounds each, with 25-1/4-inch length; listing limits fit to round axles.

Four included 6-leaf double-eye springs make the Aeagle set a practical option for replacing a complete matched set on a 7,000-pound trailer axle. Each spring is rated for 3,500 pounds, and the listing specifies SW6 replacement compatibility for round axles, giving buyers clear capacity and axle-style boundaries.

The 25-1/4-inch eye-to-eye length, 1-3/4-inch leaf width, and 9/16-inch bushing diameter provide key dimensions for comparing the springs with existing hardware. Six leaves and 60Si2Mn manganese steel are associated in the supplied facts with stable elasticity and shock absorption, supporting a smoother trailer ride. An electroplated, anti-rust coating offers corrosion resistance for outdoor use. The four-piece quantity suits a full set replacement, but the listing explicitly excludes square axles.

Skip it if you have a square axle; the listing specifies round axles only.

Choose this Aeagle set when replacing four SW6-style springs on a round-axle trailer rated for 7,000 pounds. Its stated dimensions help with comparison, but square-axle installations are outside the listed fit.

Listed on Amazon as: Aeagle Trailer Spring 6 Leaf Double Eye for 7000 lbs Trailer Axle Springs, 25-1/4” Length, 3500 lbs Weight Capacity Per Spring, Replacement SW6 4PCS

#2 · Best Pair Option

2. dreamdragon Double-Eye Spring

• Weight: 39.7 lb
• Package Dimensions: 29.52 x 14.17 x 3.14 in

Best for: Double-eye pair for 7,000-pound axles.

Why it ranks #2: A pair of 6-leaf double-eye springs is rated at 3,500 pounds each and lists the 25-1/4-inch length and 1-3/4-inch width.

A 6-leaf double-eye layout rated at 3,500 pounds per spring makes the dreamdragon pair a focused option for standard 7,000-pound trailer axles. The 25-1/4-inch eye-to-eye length and 1-3/4-inch width provide concrete dimensions for buyers assessing a replacement.

The listing specifies a 3-inch free-open height and 9/16-inch bushing diameter in addition to length and width, providing several points to compare against existing springs. Its double-eye design is described as supporting load distribution and reducing wear while improving trailer stability. A two-spring pair suits a matched pair replacement, while the 3,500-pound rating applies to each spring and is presented for a 7,000-pound axle.

Skip it if you need four springs in one package; Aeagle's four-piece set supplies that quantity.

Choose the dreamdragon pair for a double-eye replacement on a 7,000-pound axle when its listed dimensions match. It covers two springs, so buyers replacing all four should plan for the additional pair.

Listed on Amazon as: dreamdragon 6-Leaf Double Eye Trailer Leaf Spring Set – 3,500 lbs Capacity per Spring, Fits 7,000 lbs Axles (Pair of 2)

#3 · Best SW6 Match

3. Youxmoto Trailer Leaf Springs

• Weight: 38.2 lb

Best for: Two-piece SW6 replacement.

Why it ranks #3: This pair lists SW6 replacement fit, 3,500-pound capacity per spring, and the standard 25-1/4-inch eye-to-eye length.

A 6-leaf layout rated at 3,500 pounds per spring gives the Youxmoto pair capacity suited to a 7,000-pound trailer axle. The listing identifies SW6 replacement compatibility and specifies a 25-1/4-inch eye-to-eye length, giving buyers concrete reference points for evaluating a two-spring replacement.

The 1-3/4-inch leaf width, 3-inch free open measurement, and 9/16-inch bushing diameter add fit-related dimensions to the stated eye-to-eye length. A pair provides two springs, useful when replacing a matched pair rather than sourcing four pieces in one package. The supplied description says the springs use strong steel plate for stable transmission and have an extra rust-proof coating, connecting material and coating to stability and harsh-environment resistance.

Skip it if you need four springs in one package; Aeagle's four-piece set covers that quantity.

This Youxmoto pair suits a buyer replacing two SW6-style springs on a 7,000-pound axle and comparing dimensions against existing hardware. Choose another package if the job calls for four springs at once.

Listed on Amazon as: Youxmoto Trailer Leaf Springs 3500lbs for 7000lbs Axle- 6 Leaves Double Eye, 25-1/4" L, 1-3/4" Width, Fits SW6; Heavy Duty Steel Plate Springs, 2pcs

#4

4. SEHNSUCHT Trailer Leaf Spring

• Weight: 36.7 lb
• Package Dimensions: 28 x 7 x 2 in

Best for: Carbon-steel SW6 spring pair.

Why it ranks #4: The pair matches SW6 and a 7,000-pound axle, with six leaves, 3,500-pound capacity per spring, and a 9/16-inch bushing.

Carbon steel paired with a stated 3,500-pound capacity per spring makes this SEHNSUCHT set a defined replacement option for standard 7,000-pound trailer axles. Its 6-leaf double-eye design is identified as an SW6 replacement, and the 25-1/4-inch length gives buyers a useful matching reference.

The 1-3/4-inch leaf width, 3-inch free-open measurement, and 9/16-inch bushing diameter add specific comparison points for existing suspension components. The listing connects its heavy-duty carbon steel to transmission stability and friction damping, which are relevant to how the suspension handles movement. With two pieces in the package, it suits a pair replacement; buyers needing more springs must account for the listed two-piece quantity separately.

Skip it if you need four springs in one package; Aeagle's four-piece set supplies that quantity.

Pick this SEHNSUCHT pair for an SW6-style replacement on a standard 7,000-pound axle when the listed length and width match your setup. Its two-piece quantity suits a pair change, not a complete four-spring package.

Listed on Amazon as: SEHNSUCHT Trailer Leaf Spring, 6 Leaf Double Eye 3500lb Leaf Springs for 7000lb Trailer Axle, 25-1/4"L, 1.75" Width, 3” Free Open of Leaf Spring, Replace for SW6, 2-Pieces

#5

5. Magorfas Trailer Leaf Spring Set

• Weight: 38.7 lb
• Package Dimensions: 28.5 x 10.25 x 4.5 in

Best for: Capacity-flexible SW6 pair.

Why it ranks #5: This six-leaf double-eye set is rated at 3,500 pounds per spring for 7,000-pound trailers and lists a 25-1/4-inch length.

Capacity guidance spanning 3,500-, 5,000-, and 7,000-pound trailers distinguishes this Magorfas two-spring set from a listing limited to one axle rating. The title identifies a 6-leaf double-eye design, 25-1/4-inch length, and SW6 fit, giving buyers several useful replacement references.

The supplied facts rate each spring at 3,500 pounds for 7,000-pound trailers, 2,500 pounds for 5,000-pound trailers, and 1,750 pounds for 3,500-pound trailers. That range lets buyers consider the listed spring across those trailer ratings rather than relying on the maximum figure alone. The 6-leaf double-eye construction and 25-1/4-inch length offer design and length references for a replacement, while the set-of-two title indicates a pair rather than a four-piece package.

Skip it if you need four springs in one package; Aeagle's four-piece set supplies that quantity.

Consider this Magorfas pair if the stated capacity options match your trailer and you need two SW6-style springs. Its supplied fit details are limited, so compare the listed length and design with your replacement needs.

Listed on Amazon as: Trailer Leaf Spring 6 Leaf Double Eye 3500 lbs Cap for 7000 lbs Axle Suspension 25-1/4" Length fits for SW6 – Set 2

#6 · Four-Spring Set

6. Magorfas Trailer Leaf Spring Set

• Weight: 75.7 lb
• Package Dimensions: 29 x 12 x 7 in

Best for: Magorfas four-piece SW6 set.

Why it ranks #6: The listed set of four has 3,500-pound capacity per spring for 7,000-pound trailers, with an alternate 3,000-pound rating for 6,000-pound trailers.

A four-piece set of 6-leaf double-eye springs gives this Magorfas listing a useful quantity advantage for buyers replacing multiple springs together. Each spring is rated at 3,500 pounds for 7,000-pound trailers, and the title identifies a 25-1/4-inch length and SW6 fit.

The supplied capacity facts also list 3,000 pounds per spring for 6,000-pound trailers, offering another stated rating to consider alongside the 7,000-pound application. The double-eye, 6-leaf construction and SW6 fit are identified in the title, providing design and replacement references. The supplied information does not give additional dimensions such as width or bushing diameter, so this set is best evaluated using its stated length, configuration, and capacity.

Skip it if you need stated width and bushing measurements before comparing; dreamdragon's UNA223 listing provides both for its 7,000-pound double-eye pair.

Consider this Magorfas set when you need four SW6-style, 6-leaf double-eye springs and its stated capacity fits the trailer. Its listed dimensions are limited to length, so other fit comparisons need separate information.

Listed on Amazon as: Trailer Leaf Spring 6 Leaf Double Eye 3500 lbs Cap for 7000 lbs Axle Suspension 25-1/4" Length fits for SW6 – Set 4

#7 · Best 8,000-lb Pair

7. dreamdragon Slipper Spring Set

• Weight: 160 lb

Best for: Paired 8,000-pound slipper springs.

Why it ranks #7: A pair of 6-leaf slipper springs is rated at 4,000 pounds each for 8,000-pound axles, with 29-1/2-inch length and 2-inch width.

A slipper-spring set rated at 4,000 pounds per spring targets standard 8,000-pound trailer axles, with a listed pair quantity for buyers replacing both sides. The 6-leaf design measures 29-1/2 inches from eye center to hook end and has a 2-inch leaf width.

The 3-1/2-inch free-open height and 9/16-inch bushing diameter add suspension dimensions to the stated length and width, helping buyers compare the set with existing components. The listing associates the 6-leaf configuration with load support under heavy-duty use. Its slipper format differs from double-eye springs, so the mounting style is a central fit consideration. Confirm that this set's listed length and configuration suit the intended axle installation.

Skip it if you need double-eye springs; dreamdragon's UNA223 double-eye set matches that mounting style for 7,000-pound axles.

This dreamdragon set fits buyers seeking slipper springs for an 8,000-pound axle and replacing a pair. Its eye-to-hook measurement and mounting style are key boundaries to compare with the existing suspension.

Listed on Amazon as: dreamdragon 6-Leaf Slipper Trailer Leaf Spring Set – 4,000 lbs Capacity per Spring, Fits 8,000 lbs Axles (Pair of 4)

#8

8. dreamdragon 8K Suspension Kit

• Weight: 153 lb

Best for: Complete 8,000-pound axle kit.

Why it ranks #8: This 8,000-pound axle kit includes two 4,000-pound six-leaf springs plus U-bolts, nuts, washers, and tie plates.

A supplied U-bolt kit makes this dreamdragon package more than a pair of springs, supporting a single-axle suspension replacement on an 8,000-pound trailer axle. Each 6-leaf spring is rated for 4,000 pounds, with a 29-1/2-inch eye-to-eye length and 2-inch leaf width.

The kit contains two springs, four long U-bolts, eight hex nuts, eight spring washers, and two tie plates, grouping major listed suspension hardware together for installation planning. Its 3-1/2-inch free-open length and 9/16-inch bushing diameter provide further comparison dimensions. The listed U-bolts are for 8,000-pound axles with 3-1/2-inch round tubes, so the included hardware has a specific axle-tube boundary that buyers should account for.

Skip it if you have an axle tube other than the specified 3-1/2-inch round size; dreamdragon's UNA161 slipper spring is a spring-only alternative.

Choose this kit for a single 8,000-pound trailer axle when the 3-1/2-inch round-tube U-bolts match your setup. The included hardware simplifies parts gathering, but its tube-size specification is a firm boundary.

Listed on Amazon as: dreamdragon 8K Single Trailer Axle Suspension Kit with 4,000lbs 6 Leaf Springs & U-Bolt Kit for 8,000lbs Axles

#9

9. TRAILER SUPPLIES Slipper Spring

• Weight: 24.7 lb

Best for: Single 8,000-pound slipper spring.

Why it ranks #9: The single spring is rated at 4,000 pounds for an 8,000-pound axle and uses a 29-1/2-inch slipper-style design.

This single slipper spring is rated for 4,000 pounds and listed for 8,000-pound axles, making it a targeted choice when only one spring is needed. Its 29-1/2-by-2-inch dimensions and 6-leaf construction distinguish it from double-eye replacement designs.

The listing identifies 60Si2Mn high-tensile manganese steel and connects it with strength, flexibility, and resistance to fatigue, rust, and deformation under heavy use. Those material properties address durability, while the 29-1/2-inch length and 2-inch width give buyers concrete dimensions for comparison. A 9/16-inch eye is also specified. Because this is explicitly a single slipper spring, it is suited to a one-spring replacement rather than a paired kit purchase.

Skip it if you need a pair of slipper springs in one purchase; dreamdragon's 6-leaf slipper set is listed as a pair of four.

Choose this TRAILER SUPPLIES spring when replacing one slipper spring on an 8,000-pound axle and its dimensions suit the suspension. It is a single spring, so a two-sided replacement requires additional planning.

Listed on Amazon as: 6-Leaf 29 1/2" x 2" Heavy Duty Trailer Slipper Spring for 8,000 lb Axles, Single Spring, 4,000 lb Capacity, 9/16" Eye

#10

10. SEHNSUCHT 6 Leaf Trailer Spring

• Weight: 75.8 lb
• Package Dimensions: 28.5 x 10.5 x 6 in

Best for: SW6 pair for 7,000-pound axles.

Why it ranks #10: This 3,500-pound-per-spring replacement lists SW6 compatibility and standard 7,000-pound axle dimensions, but its included quantity is unclear.

A stated direct replacement for SW6 models gives this SEHNSUCHT 6-leaf spring a clear target for buyers maintaining a 7,000-pound trailer axle. Each spring is rated for 3,500 pounds, and the listing supplies a 25-1/4-inch eye-to-eye length and 1-3/4-inch width for fit comparison.

The 3-inch free-open measurement and 9/16-inch bushing diameter add useful installation references alongside the eye-to-eye length. Six leaves and carbon steel construction are presented as heavy-duty features, while the listing ties the pair's combined capacity to 7,000-pound axle compatibility. This is a focused SW6 replacement choice rather than a broadly dimensioned kit: the supplied details establish spring dimensions and rating, but do not specify accompanying mounting hardware.

Skip it if you need mounting hardware in the same package; dreamdragon's 8K suspension kit includes U-bolts, nuts, washers, and tie plates.

This SEHNSUCHT spring suits buyers replacing SW6 springs on a 7,000-pound axle and matching the listed dimensions. Treat it as a spring replacement choice; the supplied details do not describe a hardware kit.

Listed on Amazon as: 6 Leaf Trailer Spring, 3500lb Cap for 7000lb Trailer Axle, 25-1/4"L, 1.75"W