FFI's heavy duty shackle kit. Made with 3/16" shackle plates, 1/2" bolts, 3/4" sleeves and urethane bushings. These shackles will lock your springs in place during hard driving, eliminating a majority of the rear end flex.
* CHECK YOUR EXISTING SHACKLES BEFORE ORDERING - THESE ONLY REPLACE STRAIGHT SHACKLES, CANNOT BE USED IN PLACE OF OFFSET SHACKLES. *