For Double Eye Leaf Springs Tandem Triangle Equalizer Trailer Shackle Kit

A double eye leaf spring tandem trailer shackle kit is a suspension hardware package used on tandem-axle trailers (trailers with two axles) that have double-eye leaf springs. Its main purpose is to connect, support, and allow movement between the trailer frame and the leaf springs so the trailer can ride smoothly and handle loads safely.

Main Components in the Kit

1.Most tandem shackle kits include:

Shackle straps (links)
Flat steel bars that connect the spring eye to the equalizer and allow pivoting motion
Equalizers
A central pivoting component that distributes load between the front and rear axles
Shackle bolts (or wet bolts)
Heavy-duty bolts that hold everything together; some are greaseable for longer life
Bushings (nylon or bronze)
Reduce friction and wear between moving parts
Lock nuts & hardware
Secure the assembly and prevent loosening during travel

2. Some kits (like heavy-duty versions) include greaseable “wet bolt” systems for improved durability and maintenance.

3. What It Does (Function)
Connects the suspension system between axles and frame
Allows controlled movement of leaf springs as the trailer hits bumps
Balances weight across both axles via the equalizer
Improves ride quality and reduces stress on the frame and cargo

4. Where It’s Used
Tandem axle utility trailers
Car haulers
RVs and campers
Boat trailers
Equipment trailers