Add for correct 3 crossbar spacing on longer beds with Professional Truck Rack

PTR-S1 & PTR-S2 side rail kits are perfect for most truck beds, but 8 foot beds require longer side rails for correct spacing of the crossbars. Use this kit to lengthen the side rails of PTR-S1 and PTR-S2 side rail kits to accommodate correct 3 crossbar spacing a longer truck bed.

Kit Includes:

  • Left 2 foot side rail extension
  • Right 2 foot side rail extension
  • Connecting plates & installation hardware

Part ID Discription Mounts to Compatability Weight Documents
PTR-S4 Siderails 2 foot Add on Conversion Kit Siderails PTR-2 w/PTR-S2 8 lbs Overview


Professional Truck Rack CutsheetModified Date: January 18, 2018Filesize: 358kB
PTR-S4 OverviewModified Date: July 15, 2021Filesize: 252kB
PTR-S4 Assembly ManualModified Date: July 15, 2021Filesize: 2,723kB
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