Yakima 2091 Highroller Upright Bike Rack

• One knob controls the retention, adjustment and release of the bike wheel
• Holds bike in place by the front and rear wheels
• Fits all frame types with wheels 20"-29"
• Double sided wheel straps work on either side of the vehicle.
• Attaches to round and square load bars and most factory racks with the addition of Mighty Mounts (sold separately)
• Security cable integrated into rack (hides inside frame when not in use)
• Lockable with SKS lock cores (sold separately) 

Most people will choose to use the upright bike carrier when mounting their downhill bikes, because they have a thru-axle front wheel, rather than a quick release front hub.
This rack is great because it will accommodate a variety of tire sizes including kids' bikes, road bikes, and 29ers.