Universal Spring Slider Box-Rock Ready slider box for 2.5" wide springs. Inside dimension is 3"

  This is a Universal Rock-Ready leaf spring slider box for all 2.5" wide leaf springs.  A slider box instead of a shackle provides a Zero Rate passive attachment that limits/prevents spring wrap.  These were made to handle Off-Roading and Rocks --made of 1/4" steel plate, front and rear trusses and 1/2" rails.  Equaling 3/4" thick sides!  They have a 9/16" spring bolt with 3" UHMW blocks and custom Diamond washers to distribute the weight over the slider block instead of only on the 9/16" bolt.  They are a BEAST!  I built these for my FSJ Long Travel suspension but now I offer them to anyone needing a durable 4x4 slider box!

Boxes are approx' 3" on the inside [your spring and bushings cant be wider than 3"], 11" long and 5" at the highest point.  The slider blocks and washers can be drilled to 5/8 " for a 5/8" spring bolt