• 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.
  • 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 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 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 1.5 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 an Old Man Mountain rack to the rear of your bike that has a 12 mm thru axle with 1.0 mm thread pitch and 172 mm, 167 mm or 160 mm length. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.0 mm.
    • True length of axle is 172 mm, but can be shortened to 167 mm  or 160 mm with the included spacers.
  • 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 1.0 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 1.0 mm.
    • True length of axle is 229 mm, but can be shortened to 217 mm with the included tapered spacer.
  • This thru axle is for attaching an Old Man Mountain rack to the rear of your bike that has a 12 mm thru axle with 1.0 mm thread pitch and 184 mm or 175 mm length using the included spacer. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.0 mm.
    • True length of axle is 184 mm, but can be shortened to 175 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 1.0 mm thread pitch and 167, 160, or 154 mm length with included spacers. We partner with The Robert Axle Project to supply our thru axles.
    • Diameter of thru axle is 12 mm.
    • Thread pitch is 1.0 mm.
    • True length of axle is 167 mm, but can be shortened to 160 mm or 154 mm with the included spacers.
  • 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 Fit Kit contains all the parts to mount the rack to the rear of a bike with a 10 x 135 mm hub skewer: 10 x 135 mm QR Skewer, pair of 5" dropouts, pair of 14" extenders, pair of pucks, clear protective tape, and all mounting hardware.
  • This Fit Kit contains all the parts to mount an Old Man Mountain rack to the rear of a bike with a 10 x 170 mm hub skewer: 10 x 170 mm QR Skewer, pair of 5" dropouts, pair of 14" extenders, pair of pucks, clear protective tape, and all mounting hardware.
  • This Fit Kit contains all the parts to mount an Old Man Mountain rack to the rear of a bike with a 10 x 190 mm hub skewer: 10 x 190 mm QR Skewer, pair of 5" dropouts, pair of 14" extenders, pair of pucks, and clear protective tape.
  • 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 174 or 167 mm length with included spacers. 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 174 mm, but can be shortened to 167 mm with the included spacers.
  • This Fit Kit contains all the parts to mount an Old Man Mountain rack to the rear of a bike with a 10 x 190 mm hub skewer: A QR Skewer, a pair of pucks, and clear protective tape.
  • This Fit Kit contains all the parts to mount the rack to the rear of a bike with a 10 x 135 mm hub skewer: 10 x 135 mm QR Skewer, a pair of pucks, clear protective tape, and all mounting hardware.
  • Old Man Mountain was born in 1996 from the need to mount racks on bikes without traditional mounting points and make every bike capable of doing more. Our Fit Kits also have some key benefits over eyelet mounting.

    • Fit Kits protect your bike. Not all bike eyelets are meant for racks, most are only made for fenders or have very low weight limits. Axle mounting protects your frame.
    • Need to carry more gear? Axle mounting increases our rack's load capacity to 70lbs/33kg.
    • Want to move your rack between multiple bikes? Fit Kits make it easy to swap between bikes or front and rear mounting with just a few bolts.
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