Let's go ahead and start with the double-eye leaf springs, and we have exactly what you are looking for, which are springs rated higher than your 3,500 lb axle, and with the length you need. Springs flatten out and elongate over time so the best replacement for you are 4k leaf springs which measure 26 inches from center eye to center eye:
- 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long # e22YR
The # e22YR will be a strong upgrade, and will work in tandem with new equalizers,... view full answer...
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