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Rough or uneven roads can make a trailer bounce and rattle. This 4-Leaf Slipper Spring takes that harshness out of the ride by flexing to absorb shock and vibration. Each of its four steel leaves work together to resist jarring impacts, keeping the trailer level and steady whether loaded or empty. With a 1,850-lb spring capacity (3,700-lb axle capacity), it’s built to handle demanding use while reducing wear on the frame and suspension.
When you’re replacing worn or sagging suspension parts, factory specs matter. This spring measures 30" from the center of the spring eye to the end of the flat slipper tip, giving a precise fit that restores proper axle alignment. At 1-3/4" wide with 3/8"-thick leaves, it’s tough enough for consistent performance under load. The sturdy steel construction ensures lasting strength that stands up to long miles and heavy duty use.
Creaking and metal-on-metal noise can ruin a trip. The pre-installed nylon bushing in the 9/16" spring eye prevents that by letting the spring pivot smoothly on its hanger bolt. It keeps movement consistent and quiet, cutting down on friction and extending hardware life.
This spring is made for trailers that use slipper-style hangers. The front eye mounts to the hanger on the frame, and the flat rear end slides easily into the back hanger or equalizer. The geometry is dialed in for simple positioning and a balanced suspension setup. Replace both springs at once for even ride height and alignment, and the suspension will track straight and smooth again.
| Part Number | A | B | C | D | E |
|---|---|---|---|---|---|
| e89SR | 13-3/4" | 30" | 15" | 17-3/4" | 4-7/8" |
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
William
7/11/2025
Have towed the trailer over 300 miles since rebuild. Tows straight and smooth. Could not be happier!!!
Nick S.
7/11/2025
Brooke M.
5/2/2025
Looks great! Here for you if you need anything else :)
Roland
10/22/2024
These are still working great on my 1985 Long trailer and I have had no problems to date.
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Gwendolyn Y.
4/2/2026
Oh yeah, you definitely have better clearance now. What length were your old u-bolts?