Recommended Leaf Spring Replacement For A 1999 MFI Boat Trailer
Updated 09/16/2025 | Published 02/14/2022
Question:
I have a 1999 mfi boat trailer, model number SB – 70-20 that I need to buy replacement leaf springs. It currently has single leaf springs on it and I would like to replace them with multi leaf springs. The GVWR is 3,500 lb, the center to Center measurement on the current leaf springs is 26 and 3/4, closed ends. Thanks for your help
asked by: Melford W
0
Expert Reply:
To replace your current 26-3/4" double-eye leaf springs I recommend the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 27" Long # SP-210275. It is slightly longer at 27" but are flexible enough to still work for your application with no problems.
expert reply by:
Kevin C
0
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Square BT8 Spindle for 2,000-lb Trailer Axles - 1-1/2" Wide
- Shop: etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector
- Shop: Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,000 lbs
- Shop: Trailer Axle with Idler Hubs - 5 on 4-1/2 Bolt Pattern - 72" Long - 2,000 lbs
- Search Results: l44643 trailer hubs and drums
- Search Results: axle stub
- Shop: Caliber Bunk Wrap Endcaps for 2x6 Boat Trailer Guides - Black - Qty 4
- Shop: Easy Grease Trailer Idler Hub Assembly for 2K Axles - 13" to 15" - 5 on 4-1/2 - PreGreased
- Shop: Easy Grease Trailer Idler Hub Assembly for 2K Axles - 5 on 4-1/2 - Galvanized
- Video: Square #84 Spindle for 3,500-lb Trailer Axles: The Breakdown
- Video: The Low-Down on the Square BT8 Spindle for 2,000-lb Trailer Axles
- Shop: Trailer Hitch
- Search Results: trailer equalizer
- Q&A: Trailer Suspension Equalizer Tilted Up At one End
- Q&A: How Tight Should Shackle Bolts Be Tightened On Trailer
- Q&A: Torque Settings For Wheel Lug Nuts For Boat Trailer And utility Trailer
- Q&A: Troubleshooting Trailer Axle Equalizer that Touches Trailer Frame
- Article: How to Accurately Measure Trailer Leaf Springs
- Q&A: What Leaf Spring do I Need for My 2015 Karavan Double PWC Trailer Measuring 27"?
- Article: Double-Eye Trailer Suspension System Review
- Q&A: Replacement Brakes and Suspension for a 2012 Venture Tandem Axle Boat Trailer
- Q&A: Replacement Leaf Spring For 1998 Boat Trailer Carrying 18-Ft Bass Boat
- Article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer’s Leaf Springs
- Article: How to Tell the Weight Rating of a Trailer Axle
- Article: How to Raise Your Travel Trailer Height
- Article: How to Replace Trailer Leaf Springs in 5 Steps
- Article: Slipper Spring Trailer Suspension System Review
Ben K.
9/16/2025
I have the same trailer and looking for an axle rebuild kit any insight?