Best Leaf Springs For Utility Trailer: Compare 10 Options

#1 · Best Overall

1. Youxmoto 3500lb Suspension Kit

• Weight: 28.7 lb

Best for: 3500-Pound Axle Repair.

Why it ranks #1: Its 1,750-pound-per-spring, four-leaf design suits a 3,500-pound axle, and the kit includes U-bolts and tie plates for a 2-3/8-inch round axle.

The included U-bolt and tie-plate hardware makes this Youxmoto set more than a pair of replacement springs: it supplies key mounting pieces for a 3,500-pound round axle. Each four-leaf spring is rated at 1,750 pounds, giving utility-trailer owners a specified capacity and a replacement identified for SW4B.

Each spring measures 25-1/4 inches eye to eye, is 1-3/4 inches wide, and has 9/16-inch eye IDs, dimensions useful when matching an existing suspension. The kit adds four 5-1/2-inch U-bolts, two tie plates for 1-3/4-inch springs, and eight nuts for a 2-3/8-inch-diameter round axle. Strong steel plate and an extra rust-proof coating address material durability and harsh environments; the instructions also specify horizontal nut tightening.

Skip it if you need springs for an axle above 3,500 pounds; dreamdragon UNA111 lists 3,000 pounds per spring for 6,000-pound axles.

Choose this set for a 3,500-pound utility trailer using a 2-3/8-inch round axle and SW4B-style springs, especially when included mounting hardware is useful. Match the stated dimensions and tighten the nuts horizontally as directed.

Listed on Amazon as: Youxmoto 3500lb Single Trailer Axle Suspension Kit 1750lb Leaf Springs & Ubolt Kit; Pair of Trailer Leaf Spring 4 Leaf Double Eye, 25-1/4" L, 1-3/4" Width, 9/16 Eye I.D

#2 · Best Replacement Pair

2. SEHNSUCHT 4-Leaf Springs

• Weight: 24.2 lb
• Package Dimensions: 28.3 x 12 x 4.8 in

Best for: SW4B Spring Replacement.

Why it ranks #2: The pair is specified for a 3,500-pound axle and lists 25-1/4-inch eye-to-eye length, 1-3/4-inch width, and 9/16-inch bushings.

Two installed bushings on each spring distinguish the SEHNSUCHT set, reducing the need to source those bushings separately for the spring itself. Each four-leaf spring is rated at 1,750 pounds for a standard 3,500-pound trailer axle, with a 25-1/4-inch eye-to-eye length and SW4B replacement designation.

The 1-3/4-inch width, 9/16-inch bushing diameter, and 3-inch free-open measurement give trailer owners several specific points for comparing the replacement with existing suspension parts. Four leaves and 5/16-inch leaf thickness further describe the spring construction, while the 1,750-pound rating per spring identifies its stated capacity. Because two bushings are installed on each spring, the spring components arrive with those pieces already in place; the listing identifies the pair as a replacement for SW4B.

Skip it if you need 3,000 pounds per spring for a 6,000-pound axle; dreamdragon UNA111 lists that capacity and axle range.

Consider this pair for a 3,500-pound utility trailer whose existing springs match the SW4B dimensions. Its installed bushings simplify that part of the replacement, but the 1,750-pound-per-spring rating sets a clear capacity boundary.

Listed on Amazon as: SEHNSUCHT Trailer Leaf Spring, 4 Leaf 1750lb Capacity Double Eye Leaf Springs for 3500lb Trailer Axle, 25-1/4"L, 1.75" Width, 3” Free Open of Leaf Spring, Replace for SW4B, 2 Pieces

#3 · Most Complete Kit

3. RV MURTS 4-Leaf Spring Kit

• Weight: 36.1 lb
• Package Dimensions: 27.72 x 7.32 x 4.96 in

Best for: All-In-One 3500-Pound Kit.

Why it ranks #3: Each spring is rated at 1,750 pounds and measures 25-1/4 inches eye to eye; the kit also lists U-bolts, hangers, and shackles.

U-bolts, hangers, and shackles come with the RV MURTS four-leaf spring kit, consolidating major suspension components for a stated 3,500-pound trailer axle application. Each double-eye spring is rated at 1,750 pounds and measures 25-1/4 inches eye to eye, with a 3-inch free-open height.

The kit pairs its 1,750-pound-per-spring rating with four-leaf construction and dimensions of 1-3/4-inch width and 9/16-inch bushing diameter, helping buyers compare it with an existing setup. Listed references include SW4B, 72-42, and LIB-40. Including U-bolts, hangers, and shackles can bring multiple suspension components into the same replacement kit. The title mentions single-axle and tandem suspension, so check the stated application and dimensions carefully for the intended trailer.

Skip it if you want a clearly specified 6,000-pound tandem kit; Youxmoto LFLS0011-LYF lists four springs for 5,200-to-6,000-pound axles.

This RV MURTS kit suits buyers seeking 1,750-pound springs plus U-bolts, hangers, and shackles for a 3,500-pound trailer application. Its listed axle-configuration wording is mixed, so resolve that boundary before choosing it.

Listed on Amazon as: RV MURTS 2pcs 4 Leaf Trailer Spring Kit, 3500lb Single Axle Tandem Suspension, 1750lb Capacity Double Eyes Leaf Springs, U-Bolt, Hanger and Shackle Kit for Cargo, Boat Trailer Parts Replacement.

#4

4. Magorfas 4-Leaf Springs

• Weight: 24.3 lb
• Package Dimensions: 28.3 x 12 x 4.7 in

Best for: Straightforward 3500-Pound Replacement.

Why it ranks #4: This two-spring set is listed at 1,750 pounds per spring for a 3,500-pound trailer axle, with a 25-1/4-inch length and SW4B fit reference.

Magorfas specifies a 1,750-pound capacity per spring for this two-piece, four-leaf double-eye set, identifying it for 3,500-pound trailer axles. The 25-1/4-inch length and SW4B fit reference give utility-trailer owners two practical checks when comparing it with the suspension they plan to replace.

The two-spring set is described as a 4-leaf double-eye replacement, with a 1,750-pound rating per spring and a stated 3,500-pound axle application. Its 25-1/4-inch length helps establish whether the spring matches the existing eye-to-eye span, while the SW4B reference offers another application check. The supplied facts do not specify included mounting hardware or additional dimensions, so buyers should use the listed length and application rather than assume accessories are part of the set.

Skip it if you need included U-bolts and hanger hardware; Youxmoto LFLS0011-LYF lists a tandem axle kit with those components.

This pair fits buyers seeking a basic four-leaf replacement identified for a 3,500-pound trailer axle and SW4B application. Compare the 25-1/4-inch length with the existing spring; the supplied details do not establish hardware or bushing dimensions.

Listed on Amazon as: Trailer Leaf Spring 4 Leaf Double Eye 1750 lbs Cap for 3500 lbs Axle Suspension 25-1/4" Length fits for SW4B – Set 2

#5

5. FWN 791-212 Spring

• Weight: 11.18 lb
• Package Dimensions: 26.5 x 2 x 1.5 in

Best for: Manganese-Steel Spring Replacement.

Why it ranks #5: Its listed 25-1/4-inch length, 1.75-inch width, four leaves, and 1,750-pound capacity align with common 3,500-pound axle replacements.

High-strength, high-toughness manganese steel is the stated material feature of the FWN 791-212, a four-leaf spring rated at 1,750 pounds. Its 25-1/4-inch length, 1.75-inch width, and 3-inch free-open measurement provide useful comparison points for a utility-trailer suspension replacement.

FWN describes the manganese-steel construction as extending service life, while its supplied description also says the spring absorbs road vibrations to protect the trailer hitch system and cargo. Those benefits accompany the listed four-leaf design and 1,750-pound rating. The 25-1/4-inch length, 1.75-inch width, and 3-inch free-open height help owners compare dimensions with the current setup. FWN advises checking dimensions and load-bearing specifications for a proper replacement application.

Skip it if you require an explicit SW4B reference and installed-bushing details; SEHNSUCHT LS0002 lists both for its replacement springs.

This FWN spring suits buyers comparing a 1,750-pound, four-leaf replacement with a 25-1/4-inch existing spring. Its vibration-absorption claim may matter for cargo and hitch protection, but confirm the specified dimensions and load rating.

Listed on Amazon as: FWN 791-212 Leaf Spring, 4 Leaf, 25-1/4"L, 1.75" W, 3" Free Open 1750lb

#6 · Highest Listed Capacity

6. Dorman 929-1031 Spring

• Weight: 13.47 lb

Best for: Longer 2000-Pound Replacement.

Why it ranks #6: This utility-trailer replacement is rated at 2,000 pounds, with a 26-inch length and 4-1/4-inch arch for buyers needing that specific fit.

A 26-inch length and 2,000-pound capacity set the Dorman 929-1031 apart for trailer owners whose existing spring calls for those specifications. This four-leaf, eye-to-eye spring is 1-3/4 inches wide and has a 4-1/4-inch arch, providing several concrete dimensions for checking a replacement.

Dorman positions the 929-1031 as a direct replacement that matches the fit and function of original springs on specific vehicles or trailers. Its 26-inch length, 4-1/4-inch arch, and 1-3/4-inch width help determine whether it suits the existing suspension, while the 2,000-pound rating informs capacity selection. The four-leaf eye-to-eye design is intended for replacing springs damaged by overloading, collision, cracking, or corrosion. Match both dimensions and capacity to the application.

Skip it if you need a 25-1/4-inch spring for a 3,500-pound axle; SEHNSUCHT LS0002 lists that length and application.

Consider this Dorman for a utility-trailer repair requiring a 26-inch, 2,000-pound eye-to-eye spring. Its longer length and 4-1/4-inch arch are application-specific, so compare those measurements with the original before selecting it.

Listed on Amazon as: Dorman 929-1031 Utility Trailer Leaf Spring, Eye/Eye, 1 3/4" Width, 26" Length, 4 1/4" Arch, 4 Leaf, 2000lb Capacity

#7 · Heavy Axle Pair

7. dreamdragon 5-Leaf Springs

• Weight: 152 lb

Best for: Higher-Capacity Tandem Trailers.

Why it ranks #7: Each spring is rated at 3,000 pounds for a 5,200–6,000-pound axle and measures 25-1/4 inches eye to eye.

A 3,000-pound rating per spring is the defining specification of dreamdragon’s five-leaf double-eye set, which is listed for standard 5,200-to-6,000-pound trailer axles. Its 25-1/4-inch eye-to-eye length and 1-3/4-inch width give buyers concrete dimensions to compare against an existing suspension before choosing a replacement.

The five-leaf construction pairs with 60Si2Mn manganese steel, which the supplied description identifies as strong, durable, and wear-resistant for demanding use. Each spring’s 3,000-pound capacity is intended for the stated axle range, helping buyers assess load-rating suitability rather than relying on leaf count alone. The 25-1/4-inch eye-to-eye measurement, 3-inch free-open height, and 9/16-inch bushing diameter support a dimensional comparison with the trailer’s current springs.

Skip it if you need a 3,500-pound axle spring; SEHNSUCHT LS0002 lists a 1,750-pound capacity per spring for that application.

This set suits utility-trailer owners replacing springs on a 5,200-to-6,000-pound axle who can use its 3,000-pound individual rating. Check the listed length, width, free height, and bushing diameter against the existing suspension before ordering.

Listed on Amazon as: dreamdragon 5-Leaf Double Eye Trailer Spring Set – 3,000 lbs Capacity per Spring, Fits 6,000 lbs Axles (Pair of 2)

#8

8. Youxmoto 5-Leaf Suspension Kit

• Weight: 89.8 lb

Best for: Complete Tandem Axle Hardware Kit.

Why it ranks #8: The four-spring tandem kit targets 5,200–6,000-pound axles and includes U-bolts and tie plates for a 3-inch-diameter round axle.

Four five-leaf springs arrive with U-bolts, tie plates, and nuts in this Youxmoto tandem-axle kit, a substantial hardware bundle for SW5 replacement work. Each spring is rated at 3,000 pounds, and the kit is listed for 5,200-to-6,000-pound axles with 3-inch round axle tubes.

The included four 7-inch U-bolts are specified for a 3-inch-diameter round axle, alongside two tie plates for 1-3/4- or 2-inch springs and eight 1/2-20 nuts. This hardware helps consolidate parts for a tandem suspension replacement. Strong steel plate and an extra rust-proof coating are stated features for durability in harsh environments. The listing identifies SW5 replacement and instructs that nuts be tightened horizontally, making installation orientation a relevant step.

Skip it if you have a 2-3/8-inch round axle and need a 3,500-pound kit; Youxmoto LFLS0003-LYF lists that axle size and application.

This kit suits owners refreshing an SW5 tandem suspension who want four springs and mounting hardware together. Its U-bolts are specified for 3-inch round axles, so axle diameter and spring width remain important fit checks.

Listed on Amazon as: Youxmoto 4pcs 5 Leaf Springs 3000lb, for 5200lb-6000lb Tandem Trailer Axle Suspension Kit & U-Bolt & Hanger Kit; 25-1/4" L, 1-3/4" Width, 9/16" Bushing Dia, Fits for SW5

#9

9. Magorfas 5-Leaf Springs

• Weight: 31.5 lb
• Package Dimensions: 28.25 x 10 x 4.5 in

Best for: SW5 6000-Pound Spring Pair.

Why it ranks #9: This pair is listed at 3,000 pounds per spring for a 6,000-pound axle, with a 25-1/4-inch length and SW5 fit reference.

Magorfas rates each five-leaf double-eye spring at 3,000 pounds, identifying this pair for a 6,000-pound axle suspension. The 25-1/4-inch length and SW5 fit reference help utility-trailer owners compare the set with an existing spring setup before selecting a replacement.

The stated capacity is 3,000 pounds per spring, or a listed 6,000-pound trailer application, which gives buyers a specific rating to assess for their suspension. Its five-leaf double-eye configuration and 25-1/4-inch length provide further comparison points during replacement planning. Magorfas describes the part as compatible across a number of automobile and off-road vehicle brands, but the supplied details do not list bushing diameter or mounting hardware; use the stated application and length when evaluating fit.

Skip it if you need a complete tandem hardware kit with U-bolts and tie plates; Youxmoto LFLS0011-LYF lists those components.

Choose this Magorfas pair when replacing SW5-style springs on a listed 6,000-pound trailer axle. Its 3,000-pound spring rating and 25-1/4-inch length are key checks; the supplied details do not establish hardware contents.

Listed on Amazon as: Trailer Leaf Spring 5 Leaf Double Eye 3000 lbs Cap for 6000 lbs Axle Suspension Length 25-1/4" fits for SW5 – Set 2

#10

10. Dorman 929-1002 Spring

• Weight: 9.28 lb

Best for: Compact 20.5-Inch Replacement.

Why it ranks #10: It is explicitly described as a utility-trailer spring, but its 1,400-pound capacity and 20-1/2-inch length fit a narrower replacement situation.

At 20.5 inches long, the Dorman 929-1002 is a shorter specified option than many 25-1/4-inch utility-trailer springs. Its four-leaf eye-to-eye design measures 1-3/4 inches wide, has a 3-3/8-inch arch, and carries a 1,400-pound capacity, giving buyers distinct dimensions and a clear rating to check.

Dorman identifies this spring as a direct replacement intended to match the fit and function of original springs on specific vehicles or trailers. That makes its 20.5-inch length, 1-3/4-inch width, 3-3/8-inch arch, and 1,400-pound rating central to application selection. The four-leaf eye-to-eye construction is offered for replacing springs damaged by overloading, collision, cracking, or corrosion. Confirm that the existing suspension’s dimensions and required capacity align with these listed specifications.

Skip it if you need a 1,750-pound spring for a 3,500-pound axle; Dorman 929-1031 lists a 2,000-pound capacity per spring.

Choose this Dorman for a utility-trailer repair when the original spring calls for a 20.5-inch, 1,400-pound eye-to-eye replacement. Its shorter length and lower rating make matching the existing application especially important.

Listed on Amazon as: Dorman 929-1002 Utility Trailer Leaf Spring, Eye/Eye, 1 3/4" Width, 20 1/2" Length, 3 3/8" Arch, 4 Leaf, 1400lb Capacity