Picking Out Replacement Trailer Leaf Spring for 3,500 lb Axle that is 25-1/4 inch Long
Updated 12/22/2025 | Published 10/03/2024
Products Featured in This Question
Question:
My boat trailer has 3,500 lb tandem axles with 33 inch axle spacing. The existing 25 1/4 inch long springs have 1 leaf. The only 1-leaf spring that I see on your website is a 6,000 lb spring. Can this be used on a 3,500 lb axle or should I go with a 3,500 lb 4-leaf spring? If I do need to use the 4-leaf springs what length u-bolts do I need to mount the springs to my 2 3/8 inch round axle?
asked by: Thomas S
Expert Reply:
Hey Thomas, the most important factors for picking out a replacement leaf spring for a trailer are matching axle capacity and length. Getting the same amount of leaves in the spring pack is actually not a huge priority so I wouldn't worry too much about that.
Your best option is the part # DX23CR which is correct length and capacity.
If you went with the higher rated 6k part # e46SR you'd have a really stiff ride quality.
Product Page this Question was Asked From
1-Leaf Double-Eye Spring for 6,000-lb Trailer Axles - 25-1/4" Long
- Trailer Leaf Springs
- Double Eye Springs
- 9/16 Inch Eye
- Bushing Not Included
- 6000 lbs
- 1-3/4 Inch Wide
- 1 Leaf
- 25-1/4 Inch Long
- Standard Grade
- etrailer
more information >
Continue Researching
- Search Results: trailer leaf springs
- Shop: 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long
- Video: etrailer Rust-Resistant 4-Leaf Double Eye Spring for 4K Trailer Axles Spec Review
- Shop: 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/4" Long
- Shop: CE Smith U-Bolt Kit for Mounting 2" Square Trailer Axles - 4-1/2" Long U-Bolts - Zinc
- Q&A: Upgraded 26 Inch Leaf Springs For 3,500 lb Axle on Tracker Boat Trailer
- Search Results: boatbuckle boat tie downs
- Shop: CE Smith U-Bolt Kit for Mounting 3,500-lb, Round Trailer Axles - 5-1/2" Long U-Bolts - Zinc
- Shop: 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/4" Long - EMCO
- Shop: etrailer Rust-Resistant 4-Leaf Double Eye Spring for 3.5K Trailer Axles - 25-1/4" - Dacromet
- Shop: etrailer Rust-Resistant 3-Leaf Double Eye Spring for 4K Trailer Axles - 25-1/4" Long - Dacromet
- Search Results: trailer hubs and drums
- Shop: Suspension Enhancement
- Article: Anti-Rattle Devices
- Shop: Brake Controller
- Q&A: How to Choose Correct Replacement Leaf Springs and Equalizers for a 2021 Coachmen 259FKDS
- Q&A: Do You Have a Tandem Axle Suspension Kit with 5.75" x 2" Equalizers
- Search Results: emco trailer leaf springs
- Search Results: equalizer
- Q&A: What Leaf Spring and U-Bolt Kit do I Need for My 2019 Keystone Cougar 26RBS?
- Search Results: race l68110 trailer bearings races seals caps
- Search Results: #84 spindle
- Video: Review of EMCO Trailer Leaf Springs - 3 Leaf Double Eye Spring 4000 lbs Trailer Axle - EM98RB
- Video: Review of EMCO Trailer Leaf Springs - 4 Leaf Double Eye Spring 3500 lbs Trailer Axle - EM88UJ
- Q&A: What Direction Should The Band on a Leaf Springs Be Faceing
- Video: An In-Depth Look at the 1-Leaf Double-Eye Spring for 6,000-lb Trailer Axles
- Q&A: Availability of 3,500 lb Axle Leaf Spring that is 25-1/4 inch
- Video: Review of EMCO Trailer Leaf Springs - 3 Leaf Double Eye Spring 3500 lbs Trailer Axle - EM46RB
- Video: Let’s Check Out the 4-Leaf Double-Eye Spring for 4,400-lb Trailer Axles
- Video: Breaking Down the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles
on Trailer Leaf Springs
Jameson C.
12/22/2025
Hey Thomas, how did the 4-leaf springs work out on your boat trailer? I'm curious if the ride quality felt smoother compared to your old setup. Your feedback could help others choosing between those spring options.