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How to Install Putco 4 in. Wheel-to-Wheel Boss Bars - Black (07-17 Wrangler JK 4 Door) on your Jeep Wrangler

Installation Time

2 hours

Tools Required
  • 7/16”, 1/2" Wrench
  • 13mm Wrench
Extreme Terrain
Shop Parts in this Guide

Please read all instructions before installation and to check to see that all parts are included.


Boss Bar Installation

1. Remove Boss Bars from packaging. Check to see if all parts from above table of kit contents are included.

2. Factory running boards need to be remove prior to installation, if equipped. Supplied bracket will mount in factory locations. Driver Side Installation

3. Install front bracket in front location. (Figure 1) Use M8 Hex Bolt and 1/4"-20 hardware to mount bracket, (Figure 2) leave loose.

4. Install middle bracket in middle location. (Figure 3) Use M8 Hex Bolt and 1/4"-20 hardware to mount bracket, (Figure 2) leave loose.

5. Install rear bracket in rear location. (Figure 4) Use M8 Hex Bolt and 1/4"-20 hardware to mount bracket, (Figure 2) leave loose.


6. Attach the step tube to all three brackets using (4) M8 flange bolts on each bracket.

7. Tighten all bolts to secure bar.

Passenger Side Installation

8. Repeat steps 3-7 for installation of passenger side step. Enjoy!!