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Will these work with 4" lift springs or just factory
The bushing sizes included are designed for stock spring eyelets. After market leaf springs that use a factory sized leaf spring and shackle bushing should be compatible. Many of the brands use a proprietary sizing though. We would suggest stock springs for best chance of trouble free fit.
What is the diameter of the bushings?
1.25". Thanks for your inquiry.
What is the width of the springs these will fit?
Designed for factory springs. 2.5" Thanks for your inquiry.
Would the 3/4in lift require adjustments to the drivetrain or steering?
No, the minor boost from these shackles is not enough to require other changes.
How thick are the shackle plates?
They are 1/4" thick
What is the overall length of the shackle? Thanks
These are 5.5" on centers