Chevrolet 73 to 87 / 73 to 92 4-door (GMC) (34" Straight, with Outside Shock Absorbers)
Read pages 2-3 of these instructions before starting installation. Failure to do so could result in significant vehicle damage!
Front
of
Vehicle
NOTE:
Must install center bolt in
one of the center holes in
each rail.
Check to make sure center
bolt does not interfere with
bed sill.
King Pin Center approx.. 3-1/2"
forward of Axle Center
Side Bracket
Long bracket
Front of
Vehicle
1/4
*
1/4
Check for obstructions before drilling. Failure to do so could result in damaged fuel or brake lines, structural members, etc.
Horizon Global America Inc. does its best to communicate tow vehicle manufacturer changes; however, it is ultimately the
©
2006,2007,2008,2009,2010,2011,2012,2013, 2014, 2017 Horizon Global America Inc .
Drill through
bed and truck
frame
1.5-3
2
DO NOT Torque to 85lb-ft
(tighten but do not crush bed sill)
responsibility of the installer to prevent damage due to installation.
SHEET 7 0F 19
Made in China
CAUTION!
Measure from Rear Edge of truck
bed to rear edge of base rail.
Axle Center
Bed Sill
Install spacer with 1/2" hole between frame and
bed. (Cut provided tube spacer down to fit snug
between frame and bed.)
CAUTION!
30035IN
Rear Edge of
Truck Bed
34-7/8" Long Box
And Short Box
Drivers side of 1/2 ton Chevy Long Box Shown
* Optional weld
1/31/2017
pattern
Rev. U