• Fit Kit #815 is for mounting an Old Man Mountain Fat Sherpa to the rear of a fat bike.
    • Thru Axle: 12 mm thru axle with 217 to 229 mm length and x 1.0 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 seatstays to provide an upper attachment point for the rack.
    • Stainless steel mounting hardware.
  • Fit Kit #813 is for mounting an Old Man Mountain Sherpa Classic on to the rear of a bike with a 12 mm thru axle.
    • Thru Axle: 12 mm thru axle with 160, 167 or 172 mm length and x 1.0 mm thread pitch.
    • Pair of 5" Dropouts. Attach the rack frame to thru axle to fit all wheel sizes with tires width 3 inches or under.
    • Pair of 14" extenders. Stabilize and level the rack.
    • Pair of OMM Pucks. Allows for an upper attachment point for the rack.
    • Stainless steel mounting hardware.
  • Fit Kit 814 is for mounting an Old Man Mountain Sherpa Classic on to the rear of a bike with a 12 mm thru axle.
    • Thru Axle: 12 mm thru axle with 172 or 178 mm length and x 1.5 mm thread pitch.
    • Pair of 5" Dropouts. Attach the rack frame to thru axle. Fits all wheel sizes with tire width 3 inches or under.
    • Pair of 14" extenders. Stabilize and level the rack.
    • Pair of OMM Pucks. Allows for an upper attachment point for the rack.
    • Stainless steel mounting hardware.
  • This pair of 14" long extenders attaches the Old Man Mountain rack frame to the rear of your bike. The extenders have a slot for adjustability, which allows you to level the rack on different types of bikes. Includes hardware.
  • This 27.2 mm seat post mount provides a secure upper attachment point for Old Man Mountain racks for certain bikes.
  • Old Man Mountain rack with thru axle fat bike thru axle for OMM 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.