The Day 6 version of the fat bike is here.  Great on the snow and sand (and rock roads) but also great on the back.  The Mission Command 24×4.0 tires with low pressure take the hit when going over objects and through holes so your body doesn’t have to.  The rear seat position on the Day 6 improves traction in the snow but bring your legs.  Riding in snow and on softer surfaces is going to give you a workout!  Motorized versions to come soon.

HINT:  Put a bit more air in the front tire.  It will steer better and the softer rear tire will give you a cushioned ride if you want.


Contact your local Day 6 Dealer or give us a call to order the BEHEMOTH.

Order Now


  • Tires: Vee Rubber Mission Command 24×4.0
  • Rims: Alloy Double Wall 36 Spoke
  • Spokes: 12 Gauge Stainless
  • Brakes: Tektro Novela Disc, 180 mm, Front and Rear
  • Crankset: Shimano
  • Headset: Neco standard bearings
  • Chain ring: Shimano 22/32/42
  • Chain: KMC rust buster
  • Stem: UNO, alloy, adjustable, 90mm
  • Speeds: 24
  • Derailleur: Shimano Deore
  • Shifter: Shimano Acera Trigger
  • Seat Post Clamp: Double Bolts
  • Seat Post: 30.4 mm with Double Bolts


  • Weight Capacity:  350 Pounds
  • Weight: 44 pounds
  • Wheelbase: 54″

Frame Sizes:

  • Small: Fits People from Approximately 5’1 to 5’8 (up to 29″ inseam)
  • Large: Fits People from Approximately 5’8 to 6’3 (29″ inseam – 33″ inseam)
  • Extra Large: Fits People from Approximately 6’3 to 6’10 (33″ inseam – 37″ inseam)
  • All sizes approximate as everyone is different.
  • It is always best to test ride before buying if possible.
  • There should never be more than 5″ of seat post showing between top of collar and bottom of horizontal backrest tube.  See example here.


  • Black Scale – BK
  • Blue Scale – BL


  • B24S-BK    Black Scale (SOLD OUT)
  • B24S-BL     Blue Scale (SOLD OUT)
  • B24L-BK     Black Scale
  • B24L-BL      Blue Scale
  • B24XL-BK    Black Scale
  • B24XL-BL    Blue Scale (SOLD OUT)

The following parts are proprietary and custom designed by Day 6.

  • 16″ Contour Seat is injection molded and designed to support all of you
  • Contoured Ergo S’port Backrest with lumbar support fits perfectly
  • EZ Reach Handlebars eliminate leaning forward
  • U First Frame provides easy exit and entry and relaxed sitting