Most bikes are limited to riding on streets, trails, and hard surfaces.  Most people are limited by hills, the wind, and rough terrain.  The Behemoth Electric (WITH A 1000W BAFANG BBS-HD MID DRIVE MOTOR) allows you to ride on virtually any surface, on steep inclines, and into stiff winds; and it does this while smoothing the ride out for you.  The Day 6 U First frame design gives you the security of sitting lower to the ground while the luxurious cockpit provides unrivaled comfort on an upright bicycle.


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

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  • Battery attaches/locks to down tube with key
  • 1000HD Bafang Heavy Duty mid drive with 1 year warranty  or 750W High Performance rear hub motor with 3 year warranty
  • 17.5Ah lithium ion battery
  • 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
  • Headset: Neco standard bearings
  • Chain: KMC rust buster
  • Stem: UNO, alloy, adjustable, 90mm
  • Speeds: 8
  • 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: 64 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
    • B24S-BL     Blue Scale
    • B24L-BK     Black Scale
    • B24L-BL      Blue Scale
    • B24XL-BK    Black Scale
    • B24XL-BL    Blue Scale

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