• 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 1.5 mm thread pitch and 165 mm or 159 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.5 mm.
    • True length of axle is 165 mm, but can be shortened to 159 mm with the included spacer.
  • This thru axle is for attaching a rack to the rear of a bike that has a 12 mm thru axle with 1.5 mm thread pitch and 178 mm or 172 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.5 mm.
    • True length of axle is 178 mm, but can be shortened to 172 mm with the included spacer.
    • Includes hardware for attaching the rack.
  • 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 1.5 mm thread pitch and 209 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.5 mm.
    • True length of axle is 209 mm.
  • 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 1.5 mm thread pitch and 229 mm or 223 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.5 mm.
    • True length of axle is 229 mm, but can be shortened to 223 mm with the included spacer.
  • Fit Kit #806 is for mounting an Old Man Mountain Fat Sherpa to the rear of a fat bike.
    • Thru Axle: 12 mm thru axle with 209 mm length and x 1.5 mm thread pitch.
    • Pair of 5" Dropouts. Attach the rack frame to thru axle to fit all fat bike tire sizes.
    • Pair of 14" extenders. Stabilize and level the rack.
    • Pair of OMM Pucks. Mount to the seatstays to provide upper attachment points for the rack.
    • Stainless steel mounting hardware.
  • Fit Kit 808 is for mounting an Old Man Mountain Fat Sherpa to the rear of a fat bike.
    • Thru Axle: 12 mm thru axle with 223 to 229 mm length and x 1.5 mm thread pitch.
    • Pair of 5" Dropouts. Attach the rack frame to thru axle to fit all fat bike tire sizes.
    • Pair of 14" extenders. Stabilize and level the rack.
    • Pair of OMM Pucks. Mount to the seatstays to provide an upper attachment point for the rack.
    • Stainless steel mounting hardware.
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