Sulastic Rubber Springs SAJ-Models are designed to replace the original shackle of the Leaf-Spring Suspension when the shackle is under extension when applying load to the vehicle. This model is adjustable to any curb weight of your cab-chassis. 

Installed on

Rear Axle with Leaf-Spring Suspension 

Part(s) Replaced

OEM Shackle

Kit or Single Part

Kit per axle

Installation type

Screw-on

(Some applications may require modifications to the vehicle)

Installation time.

(Estimated with all pieces,

tools, and experienced installers)

1-4 Hours

Truck’s Height Modification

Keeps the height between ¼”

Truck’s Load Capacities Modification

None

Installation Guide and Warranty

Removing Shackle Lower Bolt Video

(Click Here)

Warranty

Version (March 2020-Current)

Click here to Download the PDF

Previous Versions of

Installation Guides and Warranties

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 Warranty Version ( 2006 to April 2011)

 (English/Spanish)