• This thru axle is for attaching an Old Man Mountain rack to the rear of a bike that has a 12 mm thru axle with 1.75 mm thread pitch and 180 mm or 174 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.75 mm.
    • True length of axle is 180 mm, but can be shortened to 174 mm with the included spacer.
  • This thru axle is for attaching an Old Man Mountain rack to the rear of a bike that has a 12 mm thru axle with 1.75 mm thread pitch and 198 mm or 192 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.75 mm.
    • True length of axle is 198 mm, but can be shortened to 192 mm with the included spacer.
  • This thru axle is for attaching an Old Man Mountain rack to the rear of a fat bike that has a 12 mm thru axle with 1.75 mm thread pitch and 209 mm. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.75 mm.
    • True length of axle is 209 mm.
  • This thru axle is for attaching an Old Man Mountain rack to the rear of your fat bike that has a 12 mm thru axle with 1.75 mm thread pitch and 229 mm or 217 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.75 mm.
    • True length of axle is 229 mm, but can be shortened to 217 mm with the included spacer.
  • This thru axle is for attaching an Old Man Mountain rack to your road or gravel bike that has a 15 mm thru axle with a 1.5mm thread pitch and 125mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 15 mm.
    • Thread pitch is 1.5 mm.
    • Length is 125 mm.
  • This thru axle is for attaching an Old Man Mountain front rack to your mountain bike that has a 15 mm thru axle with a length of 148 mm. It fits all Rockshox forks (both standard and Boost.) We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 15 mm.
    • Thread pitch is 1.5 mm.
    • Length is 148 mm.
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