Due to rising minimum order quantities, we have had to discontinue the Behemoth.  It is a great bike but it is a niche bike within a niche market and it is our most expensive bike.  As of now, we are planning on bringing in a Samson frame with larger tires in the future to meet the demand for a fat tire Day 6 but that is down the road.  Thanks for understanding.


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

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  • 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 5’9 (up to 30″ inseam)
  • Large: Fits People from Approximately 5’7 to 6’3 (28″ inseam – 33″ inseam)
  • Extra Large: Fits People from Approximately 6’2 to 6’9 (32″ inseam – 36″ 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 (SOLD OUT)
  • B24L-BL      Blue Scale (SOLD OUT)
  • B24XL-BK    Black Scale (SOLD OUT)
  • B24XL-BL    Blue Scale (SOLD OUT)

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

  • 16″ Contour Seat with dual density memory foam OR 13″ Sport Seat to more easily reach the ground and pedals.
  • 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