Best Adjustable Leaf Springs For Trailers

Air Lift 57284 LoadLifter 5000 Air Spring Kit

These 25 1/4" double eye leaf springs are rated at 2,500 lbs each for a total of 5,000 lbs. capacity per axle..
Double eye 4 Leaf Spring. 1 3/4" wide. 9/16" Inside Diameter nylon bushings included..
They are commonly seen with 5k or 6k lb. capacity axles..
They come with 9/16" bushings pre-installed, if you're replacing the springs on a boat trailer you will most likely need to switch those out to 1/2" bushings and hardware..

Easy, snap-in design allows for effortless storage of up to three trimmers (trimmers not included)..
Stainless Steel springs maintain snap back even with repeated daily use..
Vinyl-coated hooks protect trimmers from scratches while trailer is in motion..
Black powder-coated Steel resists rust and Maintains strength season after season..
Mounts in enclosed style trailers, hardware included..

1,750lbs capacity per each spring, for standard 3,500lbs trailer axle,Eye to Eye length: 25-1/4 inch, Free open: 3 inch, width of leaf: 1-3/4 inch, 4 leaves, 9/16 inch bushing dia, nylon bushings installed.
It will replace SW4B / 72-42 / LIB-401-DE / UNA212 / PR4B / 124903 / 9150014 / 93184 (different SKU# but same spring).
Include 3,500lbs axle U-bolt kit for 2-3/8" dia round trailer axles , Kit include: 4 x 5-1/2" long U bolts, U bolts dia. 1/2".
Include Complete tandem trailer axle hanger kit for 1-3/4" leaf springs, Kit include: 2 x EQ-E1 equalizers, 6 x 3" tall hangers, 8 x shackle straps, 14 x 9/16"-18 x 3" long shackle bolts and locknuts.
LIBRA has been supplying US OEM trailer industry for over 16 years, reliable and quality parts trusted by major trailer & trailer axle manufacturers..

Firestone Industrial Products specializes in air spring manufacturing and technology with a history of more than 80 years of research and development on technologically advanced air springs for the global marketplace..
Firestone engineers air springs and related products for commercial trucks and trailers, cars, sport utility vehicles, light trucks, mini vans, motor homes, buses, agricultural equipment, rail and industrial applications..
Firestone Industrial Products helps the industry and its drivers keep trucking in comfort with first-rate anti-vibration technology..
Install Firestone Ride-Rite Air Springs on your light truck, motorhome, RV, SUV or van and haul with comfort, confidence and control..
Our Ride-Rite products are made from the same material used by the biggest rigs on the road. They're downright durable, and designed specifically for your vehicle, so you can haul, tow and live the way you want..

Complete huanger kit for tandem 10,000lb, general duty trailer axles with 42-1/4 inch axles spacing.
Attaches 4 of 2-1/2 inch wide slipper leaf springs to your trailer frame, springs not included.

Belltech's leaf springs are designed to easily lower the rear of your leaf spring equipped Sport Truck or SUV by up to 4 inches depending on application.
By recalculating the arch of the leaf spring and compensating with the appropriate spring rate through the latest manufacturing techniques.
Come complete with high quality OEM style bushings.
OEM ride quality with added performance, control and comfort.

4-Leaf Double-Eye Spring. 1,750 lb Capacity for 3,500 lb Trailer Axles..
Comes With 2 Bushings Pre-Installed. Bushing Diameter: 9/16". Leaf Width: 1-3/4"..
Length of Eye C-to-C (Free Length): 25-1/4". Height of Arc (Free Open): 3"..
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